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Code Editor : Image++.html
<?xml version="1.0" encoding="utf-8" ?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Magick++ API: Working with Images</title> <link rel="stylesheet" href="http://www.imagemagick.org/Magick++/magick.css" type="text/css" /> </head> <body> <div class="doc-section"> <center> <h1> Magick::Image Class</h1> </center> <h4> Quick Contents</h4> <ul> <li> <a href="Image++.html#BLOBs">BLOBs</a> </li> <li> <a href="Image++.html#Constructors">Constructors</a> </li> <li> <a href="Image++.html#Image%20Manipulation%20Methods">Image Manipulation Methods</a> </li> <li> <a href="Image++.html#Image%20Attributes">Image Attributes</a> </li> <li> <a href="Image++.html#Raw%20Image%20Pixel%20Access">Low-Level Image Pixel Access</a> </li> </ul> <p>Image is the primary object in Magick++ and represents a single image frame (see <a href="http://www.imagemagick.org/Magick++/ImageDesign.html">design</a> ). The <a href="http://www.imagemagick.org/Magick++/STL.html">STL interface</a> <b>must</b> be used to operate on image sequences or images (e.g. of format GIF, TIFF, MIFF, Postscript, & MNG) which are comprized of multiple image frames. Individual frames of a multi-frame image may be requested by adding array-style notation to the end of the file name (e.g. "animation.gif[3]" retrieves the fourth frame of a GIF animation.  Various image manipulation operations may be applied to the image. Attributes may be set on the image to influence the operation of the manipulation operations. The <a href="http://www.imagemagick.org/Magick++/Pixels.html"> Pixels</a> class provides low-level access to image pixels. As a convenience, including <tt><font color="#663366"><Magick++.h></font></tt> is sufficient in order to use the complete Magick++ API. The Magick++ API is enclosed within the <i>Magick</i> namespace so you must either add the prefix "<tt> Magick::</tt> " to each class/enumeration name or add the statement "<tt> using namespace Magick;</tt>" after including the <tt>Magick++.h</tt> header.</p> <p>The preferred way to allocate Image objects is via automatic allocation (on the stack). There is no concern that allocating Image objects on the stack will excessively enlarge the stack since Magick++ allocates all large data objects (such as the actual image data) from the heap. Use of automatic allocation is preferred over explicit allocation (via <i>new</i>) since it is much less error prone and allows use of C++ scoping rules to avoid memory leaks. Use of automatic allocation allows Magick++ objects to be assigned and copied just like the C++ intrinsic data types (e.g. '<i>int</i> '), leading to clear and easy to read code. Use of automatic allocation leads to naturally exception-safe code since if an exception is thrown, the object is automagically deallocated once the stack unwinds past the scope of the allocation (not the case for objects allocated via <i>new</i> ). </p> <p>Image is very easy to use. For example, here is a the source to a program which reads an image, crops it, and writes it to a new file (the exception handling is optional but strongly recommended): </p> <pre class="code"> #include <Magick++.h> #include <iostream> using namespace std; using namespace Magick; int main(int argc,char **argv) { InitializeMagick(*argv); // Construct the image object. Seperating image construction from the // the read operation ensures that a failure to read the image file // doesn't render the image object useless. Image image; try { // Read a file into image object image.read( "girl.gif" ); // Crop the image to specified size (width, height, xOffset, yOffset) image.crop( Geometry(100,100, 100, 100) ); // Write the image to a file image.write( "x.gif" ); } catch( Exception &error_ ) { cout << "Caught exception: " << error_.what() << endl; return 1; } return 0; } </pre> The following is the source to a program which illustrates the use of Magick++'s efficient reference-counted assignment and copy-constructor operations which minimize use of memory and eliminate unncessary copy operations (allowing Image objects to be efficiently assigned, and copied into containers).  The program accomplishes the following: <ol> <li> Read master image.</li> <li> Assign master image to second image.</li> <li> Resize second image to the size 640x480.</li> <li> Assign master image to a third image.</li> <li> Resize third image to the size 800x600.</li> <li> Write the second image to a file.</li> <li> Write the third image to a file.</li> </ol> <pre class="code"> #include <Magick++.h> #include <iostream> using namespace std; using namespace Magick; int main(int argc,char **argv) { InitializeMagick(*argv); Image master("horse.jpg"); Image second = master; second.resize("640x480"); Image third = master; third.resize("800x600"); second.write("horse640x480.jpg"); third.write("horse800x600.jpg"); return 0; } </pre> During the entire operation, a maximum of three images exist in memory and the image data is never copied. <p>The following is the source for another simple program which creates a 100 by 100 pixel white image with a red pixel in the center and writes it to a file: </p> <pre class="code"> #include <Magick++.h> using namespace std; using namespace Magick; int main(int argc,char **argv) { InitializeMagick(*argv); Image image( "100x100", "white" ); image.pixelColor( 49, 49, "red" ); image.write( "red_pixel.png" ); return 0; } </pre> If you wanted to change the color image to grayscale, you could add the lines: <pre class="code"> image.quantizeColorSpace( GRAYColorspace ); image.quantizeColors( 256 ); image.quantize( ); </pre> <p>or, more simply: </p> <pre class="code"> image.type( GrayscaleType ); </pre> <p>prior to writing the image. </p> <center> <h3> <a name="BLOBs"></a> BLOBs</h3> </center> While encoded images (e.g. JPEG) are most often written-to and read-from a disk file, encoded images may also reside in memory. Encoded images in memory are known as BLOBs (Binary Large OBjects) and may be represented using the <a href="http://www.imagemagick.org/Magick++/Blob.html">Blob</a> class. The encoded image may be initially placed in memory by reading it directly from a file, reading the image from a database, memory-mapped from a disk file, or could be written to memory by Magick++. Once the encoded image has been placed within a Blob, it may be read into a Magick++ Image via a <a href="Image++.html#constructor_blob">constructor</a> or <a href="Image++.html#read">read()</a> . Likewise, a Magick++ image may be written to a Blob via <a href="Image++.html#write"> write()</a> . <p>An example of using Image to write to a Blob follows: <br />   </p> <pre class="code"> #include >Magick++.h> using namespace std; using namespace Magick; int main(int argc,char **argv) { InitializeMagick(*argv); // Read GIF file from disk Image image( "giraffe.gif" ); // Write to BLOB in JPEG format Blob blob; image.magick( "JPEG" ) // Set JPEG output format image.write( &blob ); [ Use BLOB data (in JPEG format) here ] return 0; } </pre> <p><br /> likewise, to read an image from a Blob, you could use one of the following examples: </p> <p>[ <font color="#000000">Entry condition for the following examples is that <i>data</i> is pointer to encoded image data and <i>length</i> represents the size of the data</font> ] </p> <pre class="code"> Blob blob( data, length ); Image image( blob ); </pre> or <pre class="code"> Blob blob( data, length ); Image image; image.read( blob); </pre> some images do not contain their size or format so the size and format must be specified in advance: <pre class="code"> Blob blob( data, length ); Image image; image.size( "640x480") image.magick( "RGBA" ); image.read( blob); </pre> <center> <h3> <a name="Constructors"></a> Constructors</h3> </center> Image may be constructed in a number of ways. It may be constructed from a file, a URL, or an encoded image (e.g. JPEG) contained in an in-memory <a href="http://www.imagemagick.org/Magick++/Blob.html"> BLOB</a> . The available Image constructors are shown in the following table: <br />   <br />   <table bgcolor="#ffffff" border="1" width="100%"> <caption><b>Image Constructors</b></caption> <tbody> <tr> <td> <center><b>Signature</b></center> </td> <td> <center><b>Description</b></center> </td> </tr> <tr> <td><font size="-1">const std::string &imageSpec_</font></td> <td><font size="-1">Construct Image by reading from file or URL specified by <i>imageSpec_</i>. Use array notation (e.g. filename[9]) to select a specific scene from a multi-frame image.</font></td> </tr> <tr> <td><font size="-1">const Geometry &size_, const <a href="http://www.imagemagick.org/Magick++/Color.html"> Color</a> &color_</font></td> <td><font size="-1">Construct a blank image canvas of specified size and color</font></td> </tr> <tr> <td><a name="constructor_blob"></a> <font size="-1">const <a href="http://www.imagemagick.org/Magick++/Blob.html">Blob</a> &blob_</font></td> <td rowspan="5"><font size="-1">Construct Image by reading from encoded image data contained in an in-memory <a href="http://www.imagemagick.org/Magick++/Blob.html">BLOB</a> . Depending on the constructor arguments, the Blob <a href="Image++.html#size">size</a> , <a href="Image++.html#depth">depth</a> , <a href="Image++.html#magick">magick</a> (format) may also be specified. Some image formats require that size be specified. The default ImageMagick uses for depth depends on the compiled-in Quantum size (8 or 16).  If ImageMagick's Quantum size does not match that of the image, the depth may need to be specified. ImageMagick can usually automagically detect the image's format. When a format can't be automagically detected, the format (<a href="Image++.html#magick">magick</a> ) must be specified.</font></td> </tr> <tr> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Blob.html">Blob</a> &blob_, const <a href="http://www.imagemagick.org/Magick++/Geometry.html">Geometry</a> &size_</font></td> </tr> <tr> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Blob.html">Blob</a> &blob_, const <a href="http://www.imagemagick.org/Magick++/Geometry.html">Geometry</a> &size, size_t depth</font></td> </tr> <tr> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Blob.html">Blob</a> &blob_, const <a href="http://www.imagemagick.org/Magick++/Geometry.html">Geometry</a> &size, size_t depth_, const string &magick_</font></td> </tr> <tr> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Blob.html">Blob</a> &blob_, const <a href="http://www.imagemagick.org/Magick++/Geometry.html">Geometry</a> &size, const string &magick_</font></td> </tr> <tr> <td><font size="-1">const size_t width_, </font> <br /> <font size="-1">const size_t height_,</font> <br /> <font size="-1">std::string map_,</font> <br /> <font size="-1">const <a href="http://www.imagemagick.org/Magick++/Enumerations.html#StorageType"> StorageType</a> type_,</font> <br /> <font size="-1">const void *pixels_</font></td> <td><font size="-1">Construct a new Image based on an array of image pixels. The pixel data must be in scanline order top-to-bottom. The data can be character, short int, integer, float, or double. Float and double require the pixels to be normalized [0..1]. The other types are [0..MaxRGB].  For example, to create a 640x480 image from unsigned red-green-blue character data, use</font> <p><font size="-1">   Image image( 640, 480, "RGB", 0, pixels );</font> </p> <p><font size="-1">The parameters are as follows:</font> <br />  </p> <table border="0" width="100%"> <tbody> <tr> <td><font size="-1">width_</font></td> <td><font size="-1">Width in pixels of the image.</font></td> </tr> <tr> <td><font size="-1">height_</font></td> <td><font size="-1">Height in pixels of the image.</font></td> </tr> <tr> <td><font size="-1">map_</font></td> <td><font size="-1">This character string can be any combination or order of R = red, G = green, B = blue, A = alpha, C = cyan, Y = yellow M = magenta, and K = black. The ordering reflects the order of the pixels in the supplied pixel array.</font></td> </tr> <tr> <td><font size="-1">type_</font></td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Enumerations.html#StorageType">Pixel storage type</a> (CharPixel, ShortPixel, IntegerPixel, FloatPixel, or DoublePixel)</font></td> </tr> <tr> <td><font size="-1">pixels_</font></td> <td><font size="-1">This array of values contain the pixel components as defined by the map_ and type_ parameters. The length of the arrays must equal the area specified by the width_ and height_ values and type_ parameters.</font></td> </tr> </tbody> </table> </td> </tr> </tbody> </table> <center> <h3> <a name="Image Manipulation Methods"></a> Image Manipulation Methods</h3> </center> <i>Image</i> supports access to all the single-image (versus image-list) manipulation operations provided by the ImageMagick library. If you must process a multi-image file (such as an animation), the <a href="http://www.imagemagick.org/Magick++/STL.html"> STL interface</a> , which provides a multi-image abstraction on top of <i>Image</i>, must be used. <p>Image manipulation methods are very easy to use.  For example: </p> <pre class="code"> Image image; image.read("myImage.tiff"); image.addNoise(GaussianNoise); image.write("myImage.tiff"); </pre> adds gaussian noise to the image file "myImage.tiff". <p>The operations supported by Image are shown in the following table: <br />  </p> <table border="1"> <caption><b>Image Image Manipulation Methods</b></caption> <tbody> <tr align="center"> <td><b>Method</b></td> <td><b>Signature(s)</b></td> <td><b>Description</b></td> </tr> <tr> <td style="text-align: center;" valign="middle"> <div style="text-align:center"><a name="adaptiveThreshold"></a> <font size="-1">adaptiveThreshold<br /> </font></div> </td> <td valign="middle"><font size="-1">size_t width, size_t height, size_t offset = 0<br /> </font></td> <td valign="top"><font size="-1">Apply adaptive thresholding to the image. Adaptive thresholding is useful if the ideal threshold level is not known in advance, or if the illumination gradient is not constant across the image. Adaptive thresholding works by evaulating the mean (average) of a pixel region (size specified by <i>width</i> and <i>height</i>) and using the mean as the thresholding value. In order to remove residual noise from the background, the threshold may be adjusted by subtracting a constant <i>offset</i> (default zero) from the mean to compute the threshold.</font><br /> </td> </tr> <tr> <td style="text-align: center;"> <center><a name="addNoise"></a> <font size="-1">addNoise</font></center> </td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Enumerations.html#NoiseType">NoiseType</a> noiseType_</font></td> <td><font size="-1">Add noise to image with specified noise type.</font></td> </tr> <tr> <td style="vertical-align: middle; text-align: center;"><small><a name="addNoiseChannel"></a>addNoiseChannel<br /> </small></td> <td style="vertical-align: middle;"><small>const ChannelType channel_, const NoiseType noiseType_<br /> </small></td> <td style="vertical-align: middle;"><small>Add noise to an image channel with the specified noise type.</small><font size="-1"> The <span style="font-style: italic;">channel_</span> parameter specifies the channel to add noise to.  The </font><small>noiseType_ parameter specifies the type of noise.<br /> </small></td> </tr> <tr> <td style="vertical-align: middle; text-align: center;"><small><a name="affineTransform"></a>affineTransform<br /> </small></td> <td style="vertical-align: middle;"><small>const DrawableAffine &affine<br /> </small></td> <td style="vertical-align: middle;"><small>Transform image by specified affine (or free transform) matrix.<br /> </small></td> </tr> <tr> <td style="text-align: center;" rowspan="4"> <center><a name="annotate"></a> <font size="-1">annotate</font></center> </td> <td><font size="-1">const std::string &text_, const <a href="http://www.imagemagick.org/Magick++/Geometry.html"> Geometry</a> &location_</font></td> <td><font size="-1">Annotate using specified text, and placement location</font></td> </tr> <tr> <td><font size="-1">string text_, const <a href="http://www.imagemagick.org/Magick++/Geometry.html">Geometry</a> &boundingArea_, <a href="http://www.imagemagick.org/Magick++/Enumerations.html#GravityType">GravityType</a> gravity_</font></td> <td><font size="-1">Annotate using specified text, bounding area, and placement gravity. If <i>boundingArea_</i> is invalid, then bounding area is entire image.</font></td> </tr> <tr> <td><font size="-1">const std::string &text_, const <a href="http://www.imagemagick.org/Magick++/Geometry.html"> Geometry</a> &boundingArea_, <a href="http://www.imagemagick.org/Magick++/Enumerations.html#GravityType">GravityType</a> gravity_, double degrees_, </font></td> <td><font size="-1">Annotate with text using specified text, bounding area, placement gravity, and rotation. If <i>boundingArea_</i> is invalid, then bounding area is entire image.</font></td> </tr> <tr> <td><font size="-1">const std::string &text_, <a href="http://www.imagemagick.org/Magick++/Enumerations.html#GravityType"> GravityType</a> gravity_</font></td> <td><font size="-1">Annotate with text (bounding area is entire image) and placement gravity.</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="blur"></a> <font size="-1">blur</font></center> </td> <td><font size="-1">const double radius_ = 1, const double sigma_ = 0.5</font></td> <td><font size="-1">Blur image. The <i>radius_ </i>parameter specifies the radius of the Gaussian, in pixels, not counting the center pixel.  The <i>sigma_</i> parameter specifies the standard deviation of the Laplacian, in pixels.</font></td> </tr> <tr> <td style="vertical-align: middle; text-align: center;"><small><a name="blurChannel"></a>blurChannel<br /> </small></td> <td style="vertical-align: middle;"><small>const ChannelType channel_, const double radius_ = 0.0, const double sigma_ = 1.0<br /> </small></td> <td style="vertical-align: middle;"><font size="-1">Blur an image channel. The <span style="font-style: italic;">channel_</span> parameter specifies the channel to blur. The <i>radius_ </i>parameter specifies the radius of the Gaussian, in pixels, not counting the center pixel.  The <i>sigma_</i> parameter specifies the standard deviation of the Laplacian, in pixels.</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="border"></a> <font size="-1">border</font></center> </td> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Geometry.html">Geometry</a> &geometry_ = "6x6+0+0"</font></td> <td><font size="-1">Border image (add border to image).  The color of the border is specified by the <i>borderColor</i> attribute.</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="cdl"></a> <font size="-1">cdl</font></center> </td> <td><font size="-1">const std::string &cdl_</font></td> <td><font size="-1">color correct with a color decision list. See <a href="http://en.wikipedia.org/wiki/ASC_CDL">http://en.wikipedia.org/wiki/ASC_CDL</a> for details.</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="channel"></a> <font size="-1">channel</font></center> </td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Enumerations.html#ChannelType">ChannelType</a> layer_</font></td> <td><font size="-1">Extract channel from image. Use this option to extract a particular channel from  the image.  <i>MatteChannel</i>   for  example, is useful for extracting the opacity values from an image.</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="charcoal"></a> <font size="-1">charcoal</font></center> </td> <td><font size="-1">const double radius_ = 1, const double sigma_ = 0.5</font></td> <td><font size="-1">Charcoal effect image (looks like charcoal sketch). The <i>radius_</i> parameter specifies the radius of the Gaussian, in pixels, not counting the center pixel.  The <i>sigma_</i> parameter specifies the standard deviation of the Laplacian, in pixels.</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="chop"></a> <font size="-1">chop</font></center> </td> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Geometry.html">Geometry</a> &geometry_</font></td> <td><font size="-1">Chop image (remove vertical or horizontal subregion of image)</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="colorize"></a> <font size="-1">colorize</font></center> </td> <td><font size="-1">const unsigned int opacityRed_, const unsigned int opacityGreen_, const unsigned int opacityBlue_, const Color &penColor_</font></td> <td><font size="-1">Colorize image with pen color, using specified percent opacity for red, green, and blue quantums.</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="colorMatrix"></a> <font size="-1">colorMatrix</font></center> </td> <td><font size="-1">const size_t order_, const double *color_matrix_</font></td> <td><font size="-1">apply color correction to the image.</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="comment"></a> <font size="-1">comment</font></center> </td> <td><font size="-1">const std::string &comment_</font></td> <td><font size="-1">Comment image (add comment string to image).  By default, each image is commented with its file name. Use  this  method to  assign a specific comment to the image.  Optionally you can include the image filename, type, width, height, or other  image  attributes by embedding <a href="http://www.imagemagick.org/Magick++/FormatCharacters.html">special format characters.</a> </font></td> </tr> <tr> <td style="text-align: center;" valign="middle"><font size="-1"><a name="compare"></a> compare<br /> </font></td> <td valign="middle"><font size="-1">const Image &reference_<br /> </font></td> <td valign="top"><font size="-1">Compare current image with another image. Sets <a href="Image++.html#meanErrorPerPixel">meanErrorPerPixel</a> , <a href="Image++.html#normalizedMaxError">normalizedMaxError</a> , and <a href="Image++.html#normalizedMeanError">normalizedMeanError</a> in the current image. False is returned if the images are identical. An ErrorOption exception is thrown if the reference image columns, rows, colorspace, or matte differ from the current image.</font><br /> </td> </tr> <tr> <td style="text-align: center;" rowspan="3"> <center><a name="composite"></a> <font size="-1">composite</font></center> </td> <td><font size="-1">const <a href="Image++.html">Image</a> &compositeImage_, ssize_t xOffset_, ssize_t yOffset_, <a href="http://www.imagemagick.org/Magick++/Enumerations.html#CompositeOperator"> CompositeOperator</a> compose_ = <i>InCompositeOp</i></font></td> <td><font size="-1">Compose an image onto the current image at offset specified by <i>xOffset_</i>, <i>yOffset_ </i>using the composition algorithm specified by <i>compose_</i>. </font></td> </tr> <tr> <td><font size="-1">const <a href="Image++.html">Image</a> &compositeImage_, const <a href="http://www.imagemagick.org/Magick++/Geometry.html">Geometry</a> &offset_, <a href="http://www.imagemagick.org/Magick++/Enumerations.html#CompositeOperator">CompositeOperator</a> compose_ = <i>InCompositeOp</i></font></td> <td><font size="-1">Compose an image onto the current image at offset specified by <i>offset_</i> using the composition algorithm specified by <i>compose_</i> . </font></td> </tr> <tr> <td><font size="-1">const <a href="Image++.html">Image</a> &compositeImage_, <a href="http://www.imagemagick.org/Magick++/Enumerations.html#GravityType">GravityType</a> gravity_, <a href="http://www.imagemagick.org/Magick++/Enumerations.html#CompositeOperator">CompositeOperator</a> compose_ = <i>InCompositeOp</i></font></td> <td><font size="-1">Compose an image onto the current image with placement specified by <i>gravity_ </i>using the composition algorithm specified by <i>compose_</i>. </font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="contrast"></a> <font size="-1">contrast</font></center> </td> <td><font size="-1">size_t sharpen_</font></td> <td><font size="-1">Contrast image (enhance intensity differences in image)</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="convolve"></a> <font size="-1">convolve</font></center> </td> <td><font size="-1">size_t order_, const double *kernel_</font></td> <td><font size="-1">Convolve image.  Applies a user-specfied convolution to the image. The <i>order_</i> parameter represents the number of columns and rows in the filter kernel, and <i>kernel_</i> is a two-dimensional array of doubles representing the convolution kernel to apply.</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="crop"></a> <font size="-1">crop</font></center> </td> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Geometry.html">Geometry</a> &geometry_</font></td> <td><font size="-1">Crop image (subregion of original image)</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="cycleColormap"></a> <font size="-1">cycleColormap</font></center> </td> <td><font size="-1">int amount_</font></td> <td><font size="-1">Cycle image colormap</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="despeckle"></a> <font size="-1">despeckle</font></center> </td> <td><font size="-1">void</font></td> <td><font size="-1">Despeckle image (reduce speckle noise)</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="display"></a> <font size="-1">display</font></center> </td> <td><font size="-1">void</font></td> <td><font size="-1">Display image on screen.</font> <br /> <font size="-1"><b><font color="#ff0000">Caution: </font></b> if an image format is is not compatible with the display visual (e.g. JPEG on a colormapped display) then the original image will be altered. Use a copy of the original if this is a problem.</font></td> </tr> <tr> <td> <center><a name="distort"></a> <font size="-1">distort</font></center> </td> <td><font size="-1">const DistortImageMethod method, const size_t number_arguments, const double *arguments, const bool bestfit = false </font></td> <td><font size="-1">Distort image.  Applies a user-specfied distortion to the image.</font></td> </tr> <tr> <td style="text-align: center;" rowspan="2"> <center><a name="draw"></a> <font size="-1">draw</font></center> </td> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Drawable.html">Drawable</a> &drawable_</font></td> <td><font size="-1">Draw shape or text on image.</font></td> </tr> <tr> <td><font size="-1">const std::list<<a href="http://www.imagemagick.org/Magick++/Drawable.html">Drawable</a> > &drawable_</font></td> <td><font size="-1">Draw shapes or text on image using a set of Drawable objects contained in an STL list. Use of this method improves drawing performance and allows batching draw objects together in a list for repeated use.</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="edge"></a> <font size="-1">edge</font></center> </td> <td><font size="-1">size_t radius_ = 0.0</font></td> <td><font size="-1">Edge image (hilight edges in image).  The radius is the radius of the pixel neighborhood.. Specify a radius of zero for automatic radius selection.</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="emboss"></a> <font size="-1">emboss</font></center> </td> <td><font size="-1">const double radius_ = 1, const double sigma_ = 0.5</font></td> <td><font size="-1">Emboss image (hilight edges with 3D effect). The <i> radius_</i> parameter specifies the radius of the Gaussian, in pixels, not counting the center pixel.  The <i>sigma_</i> parameter specifies the standard deviation of the Laplacian, in pixels.</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="enhance"></a> <font size="-1">enhance</font></center> </td> <td><font size="-1">void</font></td> <td><font size="-1">Enhance image (minimize noise)</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="equalize"></a> <font size="-1">equalize</font></center> </td> <td><font size="-1">void</font></td> <td><font size="-1">Equalize image (histogram equalization)</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="erase"></a> <font size="-1">erase</font></center> </td> <td><font size="-1">void</font></td> <td><font size="-1">Set all image pixels to the current background color.</font></td> </tr> <tr> <td style="text-align: center;" rowspan="4"> <center><a name="extent"></a> <font size="-1">extent</font></center></td> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Geometry.html"> Geometry</a> &geometry_</font></td> <td rowspan="2"><font size="-1">extends the image as defined by the geometry, gravity, and image background color.</font></td> </tr> <tr> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Geometry.html">Geometry</a> &geometry_, const <a href="http://www.imagemagick.org/Magick++/Color.html">Color</a> &backgroundColor_</font></td> </tr> <tr> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Geometry.html"> Geometry</a> &geometry_, const <a href="http://www.imagemagick.org/Magick++/Enumerations.html#GravityType">GravityType</a> &gravity_</font></td> <td rowspan="2"><font size="-1">extends the image as defined by the geometry, gravity, and image background color.</font></td> </tr> <tr> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Geometry.html">Geometry</a> &geometry_, const <a href="http://www.imagemagick.org/Magick++/Color.html">Color</a> &backgroundColor_, const <a href="http://www.imagemagick.org/Magick++/Enumerations.html#GravityType">GravityType</a> &gravity_</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="flip"></a> <font size="-1">flip</font></center> </td> <td><font size="-1">void</font></td> <td><font size="-1">Flip image (reflect each scanline in the vertical direction)</font></td> </tr> <tr> <td style="text-align: center;" rowspan="4"> <center><a name="floodFillColor"></a> <font size="-1">floodFill-</font> <br /> <font size="-1">Color</font></center> </td> <td><font size="-1">ssize_t x_, ssize_t y_, const <a href="http://www.imagemagick.org/Magick++/Color.html"> Color</a> &fillColor_</font></td> <td rowspan="2"><font size="-1">Flood-fill color across pixels that match the color of the target pixel and are neighbors of the target pixel. Uses current fuzz setting when determining color match.</font></td> </tr> <tr> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Geometry.html">Geometry</a> &point_, const <a href="http://www.imagemagick.org/Magick++/Color.html">Color</a> &fillColor_</font></td> </tr> <tr> <td><font size="-1">ssize_t x_, ssize_t y_, const <a href="http://www.imagemagick.org/Magick++/Color.html"> Color</a> &fillColor_, const <a href="http://www.imagemagick.org/Magick++/Color.html">Color</a> &borderColor_</font></td> <td rowspan="2"><font size="-1">Flood-fill color across pixels starting at target-pixel and stopping at pixels matching specified border color. Uses current fuzz setting when determining color match.</font></td> </tr> <tr> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Geometry.html">Geometry</a> &point_, const <a href="http://www.imagemagick.org/Magick++/Color.html">Color</a> &fillColor_, const <a href="http://www.imagemagick.org/Magick++/Color.html">Color</a> &borderColor_</font></td> </tr> <tr> <td style="text-align: center;"><a name="floodFillOpacity"></a> <font size="-1">floodFillOpacity</font></td> <td><font size="-1">const long x_, const long y_, const unsigned int opacity_, const PaintMethod method_</font></td> <td><font size="-1">Floodfill pixels matching color (within fuzz factor) of target pixel(x,y) with replacement opacity value using method.</font></td> </tr> <tr> <td style="text-align: center;" rowspan="4"> <center><a name="floodFillTexture"></a> <font size="-1">floodFill-</font> <br /> <font size="-1">Texture</font></center> </td> <td><font size="-1">ssize_t x_, ssize_t y_,  const Image &texture_</font></td> <td rowspan="2"><font size="-1">Flood-fill texture across pixels that match the color of the target pixel and are neighbors of the target pixel. Uses current fuzz setting when determining color match.</font></td> </tr> <tr> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Geometry.html">Geometry</a> &point_, const Image &texture_</font></td> </tr> <tr> <td><font size="-1">ssize_t x_, ssize_t y_, const Image &texture_, const <a href="http://www.imagemagick.org/Magick++/Color.html">Color</a> &borderColor_</font></td> <td rowspan="2"><font size="-1">Flood-fill texture across pixels starting at target-pixel and stopping at pixels matching specified border color. Uses current fuzz setting when determining color match.</font></td> </tr> <tr> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Geometry.html">Geometry</a> &point_, const Image &texture_, const <a href="http://www.imagemagick.org/Magick++/Color.html"> Color</a> &borderColor_</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="flop"></a> <font size="-1">flop</font></center> </td> <td><font size="-1">void </font></td> <td><font size="-1">Flop image (reflect each scanline in the horizontal direction)</font></td> </tr> <tr> <td style="text-align: center;" rowspan="2"> <center><a name="frame"></a> <font size="-1">frame</font></center> </td> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Geometry.html">Geometry</a> &geometry_ = "25x25+6+6"</font></td> <td rowspan="2"><font size="-1">Add decorative frame around image</font></td> </tr> <tr> <td><font size="-1">size_t width_, size_t height_, ssize_t x_, ssize_t y_, ssize_t innerBevel_ = 0, ssize_t outerBevel_ = 0</font></td> </tr> <tr> <td> <center><a name="fx"></a> <font size="-1">fx</font></center> </td> <td><font size="-1">const std::string expression, const Magick::ChannelType channel</font></td> <td><font size="-1">Fx image.  Applies a mathematical expression to the image.</font></td> </tr> <tr> <td style="text-align: center;" rowspan="2"> <center><a name="gamma"></a> <font size="-1">gamma</font></center> </td> <td><font size="-1">double gamma_</font></td> <td><font size="-1">Gamma correct image (uniform red, green, and blue correction).</font></td> </tr> <tr> <td><font size="-1">double gammaRed_, double gammaGreen_, double gammaBlue_</font></td> <td><font size="-1">Gamma correct red, green, and blue channels of image.</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="gaussianBlur"></a> <font size="-1">gaussianBlur</font></center> </td> <td><font size="-1">const double width_, const double sigma_</font></td> <td><font size="-1">Gaussian blur image. The number of neighbor pixels to be included in the convolution mask is specified by 'width_'.  For example, a width of one gives a (standard) 3x3 convolution mask. The standard deviation of the gaussian bell curve is specified by 'sigma_'.</font></td> </tr> <tr> <td style="vertical-align: middle; text-align: center;"><small><a name="gaussianBlurChannel"></a>gaussianBlurChannel<br /> </small></td> <td style="vertical-align: middle;"><small>const ChannelType channel_, const double radius_ = 0.0, const double sigma_ = 1.0<br /> </small></td> <td style="vertical-align: middle;"><font size="-1">Gaussian blur an image channel. </font><font size="-1">The <span style="font-style: italic;">channel_</span> parameter specifies the channel to blur. </font><font size="-1">The number of neighbor pixels to be included in the convolution mask is specified by 'width_'.  For example, a width of one gives a (standard) 3x3 convolution mask. The standard deviation of the gaussian bell curve is specified by 'sigma_'.</font></td> </tr> <tr> <td style="text-align: center;" valign="middle"><font size="-1"><a name="haldClut"></a> haldClut<br /> </font></td> <td valign="middle"><font size="-1">const Image &reference_<br /> </font></td> <td valign="top"><font size="-1">apply a Hald color lookup table to the image.</font><br /> </td> </tr> <tr> <td style="text-align: center;"> <center><a name="implode"></a> <font size="-1">implode</font></center> </td> <td><font size="-1">const double factor_</font></td> <td><font size="-1">Implode image (special effect)</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="inverseFourierTransform"></a> <font size="-1">inverseFourierTransform</font></center> </td> <td><font size="-1">const Image &phaseImage_, const bool magnitude_</font></td> <td><font size="-1">implements the inverse discrete Fourier transform (DFT) of the image either as a magnitude / phase or real / imaginary image pair.</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="label"></a> <font size="-1">label</font></center> </td> <td><font size="-1">const string &label_</font></td> <td><font size="-1">Assign a label to an image. Use this option to  assign  a  specific label to the image. Optionally you can include the image filename, type, width, height, or scene number in the label by embedding  <a href="http://www.imagemagick.org/Magick++/FormatCharacters.html"> special format characters.</a> If the first character of string is @, the image label is read from a file titled by the remaining characters in the string. When converting to Postscript, use this  option to specify a header string to print above the image.</font></td> </tr> <tr> <td style="vertical-align: top; text-align: center;"><small><a name="level"></a>level<br /> </small></td> <td style="vertical-align: top;"><small>const double black_point, const double white_point, const double mid_point=1.0<br /> </small></td> <td style="vertical-align: top;"><small>Level image. Adjust the levels of the image by scaling the colors falling between specified white and black points to the full available quantum range. The parameters provided represent the black, mid (gamma), and white points.  The black point specifies the darkest color in the image. Colors darker than the black point are set to zero. Mid point (gamma) specifies a gamma correction to apply to the image. White point specifies the lightest color in the image.  Colors brighter than the white point are set to the maximum quantum value. The black and white point have the valid range 0 to MaxRGB while mid (gamma) has a useful range of 0 to ten.<br /> </small></td> </tr> <tr> <td style="vertical-align: middle; text-align: center;"><small><a name="levelChannel"></a>levelChannel<br /> </small></td> <td style="vertical-align: middle;"><small>const ChannelType channel, const double black_point, const double white_point, const double mid_point=1.0<br /> </small></td> <td style="vertical-align: middle;"><small>Level image channel. Adjust the levels of the image channel by scaling the values falling between specified white and black points to the full available quantum range. The parameters provided represent the black, mid (gamma), and white points. The black point specifies the darkest color in the image. Colors darker than the black point are set to zero. Mid point (gamma) specifies a gamma correction to apply to the image. White point specifies the lightest color in the image. Colors brighter than the white point are set to the maximum quantum value. The black and white point have the valid range 0 to MaxRGB while mid (gamma) has a useful range of 0 to ten.<br /> </small></td> </tr> <tr> <td style="text-align: center;"> <center><a name="magnify"></a> <font size="-1">magnify</font></center> </td> <td><font size="-1">void</font></td> <td><font size="-1">Magnify image by integral size</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="map"></a> <font size="-1">map</font></center> </td> <td><font size="-1">const Image &mapImage_ , bool dither_ = false</font></td> <td><font size="-1">Remap image colors with closest color from reference image. Set dither_ to <i>true</i> in to apply Floyd/Steinberg error diffusion to the image. By default, color reduction chooses an optimal  set  of colors that best represent the original image. Alternatively, you can  choose  a  particular  set  of colors  from  an image file with this option.</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="matteFloodfill"></a> <font size="-1">matteFloodfill</font></center> </td> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Color.html">Color</a> &target_, const unsigned int  opacity_, const ssize_t x_, const ssize_t y_, <a href="http://www.imagemagick.org/Magick++/Enumerations.html#PaintMethod">PaintMethod</a> method_</font></td> <td><font size="-1">Floodfill designated area with a replacement opacity value.</font></td> </tr> <tr> <td style="text-align: center;"><a name="medianFilter"></a> <font size="-1">medianFilter</font></td> <td><font size="-1">const double radius_ = 0.0</font></td> <td><font size="-1">Filter image by replacing each pixel component with the median color in a circular neighborhood</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="mergeLayers"></a> <font size="-1">mergeLayers</font></center> </td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Enumerations.html#LayerMethod">LayerMethod</a> noiseType_</font></td> <td><font size="-1">handle multiple images forming a set of image layers or animation frames.</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="minify"></a> <font size="-1">minify</font></center> </td> <td><font size="-1">void</font></td> <td><font size="-1">Reduce image by integral size</font></td> </tr> <tr> <td style="text-align: center;"><a name="modifyImage"></a> <font size="-1">modifyImage</font></td> <td><font size="-1">void</font></td> <td><font size="-1">Prepare to update image. Ensures that there is only one reference to the underlying image so that the underlying image may be safely modified without effecting previous generations of the image. Copies the underlying image to a new image if necessary.</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="modulate"></a> <font size="-1">modulate</font></center> </td> <td><font size="-1">double brightness_, double saturation_, double hue_</font></td> <td><font size="-1">Modulate percent hue, saturation, and brightness of an image. Modulation of saturation and brightness is as a ratio of the current value (100.0 for no change). Modulation of hue is an absolute rotation of -180 degrees to +180 degrees from the current position corresponding to an argument range of 0 to 200.0 (100.0 for no change).</font></td> </tr> <tr> <td style="vertical-align: middle; text-align: center;"><small><a name="motionBlur"></a>motionBlur<br /> </small></td> <td style="vertical-align: middle;"><small>const double radius_, const double sigma_, const double angle_<br /> </small></td> <td style="vertical-align: middle;"><small>Motion blur image with specified blur factor. The radius_ parameter specifies the radius of the Gaussian, in pixels, not counting the center pixel.  The sigma_ parameter specifies the standard deviation of the Laplacian, in pixels. The angle_ parameter specifies the angle the object appears to be comming from (zero degrees is from the right).<br /> </small></td> </tr> <tr> <td style="text-align: center;"> <center><a name="negate"></a> <font size="-1">negate</font></center> </td> <td><font size="-1">bool grayscale_ = false</font></td> <td><font size="-1">Negate colors in image.  Replace every pixel with its complementary color (white becomes black, yellow becomes blue, etc.).  Set grayscale to only negate grayscale values in image.</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="normalize"></a> <font size="-1">normalize</font></center> </td> <td><font size="-1">void</font></td> <td><font size="-1">Normalize image (increase contrast by normalizing the pixel values to span the full range of color values).</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="oilPaint"></a> <font size="-1">oilPaint</font></center> </td> <td><font size="-1">size_t radius_ = 3</font></td> <td><font size="-1">Oilpaint image (image looks like oil painting)</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="opacity"></a> <font size="-1">opacity</font></center> </td> <td><font size="-1">unsigned int opacity_</font></td> <td><font size="-1">Set or attenuate the opacity channel in the image. If the image pixels are opaque then they are set to the specified opacity value, otherwise they are blended with the supplied opacity value.  The value of opacity_ ranges from 0 (completely opaque) to <i>MaxRGB</i> . The defines <i>OpaqueOpacity</i> and <i>TransparentOpacity</i> are available to specify completely opaque or completely transparent, respectively.</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="opaque"></a> <font size="-1">opaque</font></center> </td> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Color.html">Color</a> &opaqueColor_, const <a href="http://www.imagemagick.org/Magick++/Color.html">Color</a> &penColor_</font></td> <td><font size="-1">Change color of pixels matching opaqueColor_ to specified penColor_.</font></td> </tr> <tr> <td style="text-align: center;" rowspan="2"> <center><a name="ping"></a> <font size="-1">ping</font></center> </td> <td><font size="-1">const std::string &imageSpec_</font></td> <td rowspan="2"><font size="-1">Ping is similar to read except only enough of the image is read to determine the image columns, rows, and filesize.  The <a href="Image++.html#columns">columns</a> </font>, <font size="-1"><a href="Image++.html#rows">rows</a> , and <a href="Image++.html#fileSize">fileSize</a> attributes are valid after invoking ping.  The image data is not valid after calling ping.</font></td> </tr> <tr> <td><font size="-1">const Blob &blob_</font></td> </tr> <tr> <td style="vertical-align: middle; text-align: center;"><small><a name="process"></a>process<br /> </small></td> <td style="vertical-align: middle;"><small>std::string name_, const ssize_t argc_, char **argv_<br /> </small></td> <td style="vertical-align: middle;"><small>Execute the named process module, passing any arguments via an argument vector, with argc_ specifying the number of arguments in the vector, and argv_ passing the address of an array of null-terminated C strings which constitute the argument vector. An exception is thrown if the requested process module does not exist, fails to load, or fails during execution.</small><br /> </td> </tr> <tr> <td style="text-align: center;"> <center><a name="quantize"></a> <font size="-1">quantize</font></center> </td> <td><font size="-1">bool measureError_ = false</font></td> <td><font size="-1">Quantize image (reduce number of colors). Set measureError_ to true in order to calculate error attributes.</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="raise"></a> <font size="-1">raise</font></center> </td> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Geometry.html">Geometry</a> &geometry_ = "6x6+0+0",  bool raisedFlag_ =  false</font></td> <td><font size="-1">Raise image (lighten or darken the edges of an image to give a 3-D raised or lowered effect)</font></td> </tr> <tr> <td style="text-align: center;" rowspan="8"> <center><a name="read"></a> <font size="-1">read</font></center> </td> <td><font size="-1">const string &imageSpec_</font></td> <td><font size="-1">Read image into current object</font></td> </tr> <tr> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Geometry.html">Geometry</a> &size_, const std::string &imageSpec_</font></td> <td><font size="-1">Read image of specified size into current object. This form is useful for images that do not specifiy their size or to specify a size hint for decoding an image. For example, when reading a Photo CD, JBIG, or JPEG image, a size request causes the library to return an image which is the next resolution greater or equal to the specified size. This may result in memory and time savings.</font></td> </tr> <tr> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Blob.html">Blob</a> &blob_</font></td> <td rowspan="5"><font size="-1">Read encoded image of specified size from an in-memory <a href="http://www.imagemagick.org/Magick++/Blob.html">BLOB</a> into current object. Depending on the method arguments, the Blob size, depth, and format may also be specified. Some image formats require that size be specified. The default ImageMagick uses for depth depends on its Quantum size (8 or 16).  If ImageMagick's Quantum size does not match that of the image, the depth may need to be specified. ImageMagick can usually automagically detect the image's format. When a format can't be automagically detected, the format must be specified.</font></td> </tr> <tr> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Blob.html">Blob</a> &blob_, const <a href="http://www.imagemagick.org/Magick++/Geometry.html">Geometry</a> &size_</font></td> </tr> <tr> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Blob.html">Blob</a> &blob_, const <a href="http://www.imagemagick.org/Magick++/Geometry.html">Geometry</a> &size_, size_t depth_</font></td> </tr> <tr> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Blob.html">Blob</a> &blob_, const <a href="http://www.imagemagick.org/Magick++/Geometry.html">Geometry</a> &size_, size_t depth_, const string &magick_ </font></td> </tr> <tr> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Blob.html">Blob</a> &blob_, const <a href="http://www.imagemagick.org/Magick++/Geometry.html">Geometry</a> &size_, const string &magick_</font></td> </tr> <tr> <td><font size="-1">const size_t width_, const size_t height_, std::string map_, const StorageType type_, const void *pixels_</font></td> <td><font size="-1">Read image based on an array of image pixels. The pixel data must be in scanline order top-to-bottom. The data can be character, short int, integer, float, or double. Float and double require the pixels to be normalized [0..1]. The other types are [0..MaxRGB].  For example, to create a 640x480 image from unsigned red-green-blue character data, use</font> <p><font size="-1">  image.read( 640, 480, "RGB", CharPixel, pixels );</font> </p> <p><font size="-1">The parameters are as follows:</font> <br />  </p> <table border="0" width="100%"> <tbody> <tr> <td><font size="-1">width_</font></td> <td><font size="-1">Width in pixels of the image.</font></td> </tr> <tr> <td><font size="-1">height_</font></td> <td><font size="-1">Height in pixels of the image.</font></td> </tr> <tr> <td><font size="-1">map_</font></td> <td><font size="-1">This character string can be any combination or order of R = red, G = green, B = blue, A = alpha, C = cyan, Y = yellow M = magenta, and K = black. The ordering reflects the order of the pixels in the supplied pixel array.</font></td> </tr> <tr> <td><font size="-1">type_</font></td> <td><font size="-1">Pixel storage type (CharPixel, ShortPixel, IntegerPixel, FloatPixel, or DoublePixel)</font></td> </tr> <tr> <td><font size="-1">pixels_</font></td> <td><font size="-1">This array of values contain the pixel components as defined by the map_ and type_ parameters. The length of the arrays must equal the area specified by the width_ and height_ values and type_ parameters.</font></td> </tr> </tbody> </table> </td> </tr> <tr> <td style="text-align: center;"> <center><a name="reduceNoise"></a> <font size="-1">reduceNoise</font></center> </td> <td><font size="-1">const double order_</font></td> <td><font size="-1">reduce noise in image using a noise peak elimination filter.</font></td> </tr> <tr> <td style="vertical-align: middle; text-align: center;"><small><a name="randomThreshold"></a>randomThreshold<br /> </small></td> <td style="vertical-align: middle;"><small>const Geometry &thresholds_<br /> </small></td> <td style="vertical-align: middle;"><small>Random threshold the image. Changes the value of individual pixels based on the intensity of each pixel compared to a random threshold. The result is a low-contrast, two color image. The thresholds_ argument is a geometry containing LOWxHIGH thresholds. If the string contains 2x2, 3x3, or 4x4, then an ordered dither of order 2, 3, or 4 will be performed instead. This is a very fast alternative to 'quantize' based dithering.<br /> </small></td> </tr> <tr> <td style="vertical-align: middle; text-align: center;"><small><a name="randomThresholdChannel"></a>randomThresholdChannel<br /> </small></td> <td style="vertical-align: middle;"><small>const Geometry &thresholds_, const ChannelType channel_<br /> </small></td> <td style="vertical-align: middle;"><small>Random threshold an image channel. Similar to <a href="Image++.html#randomThreshold">randomThreshold</a>() but restricted to the specified channel.<br /> </small></td> </tr> <tr> <td style="text-align: center;"> <center><a name="roll"></a> <font size="-1">roll</font></center> </td> <td><font size="-1">int columns_, ssize_t rows_</font></td> <td><font size="-1">Roll image (rolls image vertically and horizontally) by specified number of columnms and rows)</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="rotate"></a> <font size="-1">rotate</font></center> </td> <td><font size="-1">double degrees_</font></td> <td><font size="-1">Rotate image counter-clockwise by specified number of degrees.</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="sample"></a> <font size="-1">sample</font></center> </td> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Geometry.html">Geometry</a> &geometry_ </font></td> <td><font size="-1">Resize image by using pixel sampling algorithm</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="scale"></a> <font size="-1">scale</font></center> </td> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Geometry.html">Geometry</a> &geometry_</font></td> <td><font size="-1">Resize image by using simple ratio algorithm</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="segment"></a> <font size="-1">segment</font></center> </td> <td><font size="-1">double clusterThreshold_ = 1.0,</font> <br /> <font size="-1">double smoothingThreshold_ = 1.5</font></td> <td><font size="-1">Segment (coalesce similar image components) by analyzing the histograms of the color components and identifying units that are homogeneous with the fuzzy c-means technique. Also uses <i>quantizeColorSpace</i> and <i>verbose</i> image attributes. Specify <i> clusterThreshold_</i> , as the number  of  pixels  each cluster  must exceed the cluster threshold to be considered valid. <i>SmoothingThreshold_</i> eliminates noise in the  second derivative of the histogram. As the value is  increased, you can  expect  a  smoother second derivative.  The default is 1.5.</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="shade"></a> <font size="-1">shade</font></center> </td> <td><font size="-1">double azimuth_ = 30, double elevation_ = 30,</font> <br /> <font size="-1">bool colorShading_ = false</font></td> <td><font size="-1">Shade image using distant light source. Specify <i> azimuth_</i> and <i>elevation_</i> as the  position  of  the light source. By default, the shading results as a grayscale image.. Set c<i>olorShading_</i> to <i>true</i> to shade the red, green, and blue components of the image.</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="shadow"></a> <font size="-1">shadow</font></center> </td> <td><font size="-1">const double percent_opacity = 80, const double sigma_ = 0.5, const ssize_t x_ = 0, const ssize_t y_ = 0</font></td> <td><font size="-1">simulate an image shadow</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="sharpen"></a> <font size="-1">sharpen</font></center> </td> <td><font size="-1">const double radius_ = 1, const double sigma_ = 0.5</font></td> <td><font size="-1">Sharpen pixels in image.  The <i>radius_</i> parameter specifies the radius of the Gaussian, in pixels, not counting the center pixel.  The <i>sigma_</i> parameter specifies the standard deviation of the Laplacian, in pixels.</font></td> </tr> <tr> <td style="vertical-align: middle; text-align: center;"><small><a name="sharpenChannel"></a>sharpenChannel<br /> </small></td> <td style="vertical-align: middle;"><small>const ChannelType channel_, const double radius_ = 0.0, const double sigma_ = 1.0<br /> </small></td> <td style="vertical-align: middle;"><font size="-1">Sharpen pixel quantums in an image channel  The <span style="font-style: italic;">channel_</span> parameter specifies the channel to sharpen..  The <i>radius_</i> parameter specifies the radius of the Gaussian, in pixels, not counting the center pixel.  The <i>sigma_</i> parameter specifies the standard deviation of the Laplacian, in pixels.</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="shave"></a> <font size="-1">shave</font></center> </td> <td><font size="-1">const Geometry &geometry_</font></td> <td><font size="-1">Shave pixels from image edges.</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="shear"></a> <font size="-1">shear</font></center> </td> <td><font size="-1">double xShearAngle_, double yShearAngle_</font></td> <td><font size="-1">Shear image (create parallelogram by sliding image by X or Y axis).  Shearing slides one edge of an image along the X  or  Y axis,  creating  a parallelogram.  An X direction shear slides an edge along the X axis, while  a  Y  direction shear  slides  an edge along the Y axis.  The amount of the shear is controlled by a shear angle.  For X direction  shears,  x  degrees is measured relative to the Y axis, and similarly, for Y direction shears  y  degrees is measured relative to the X axis. Empty triangles left over from shearing the  image  are filled  with  the  color  defined as <i>borderColor</i>. </font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="solarize"></a> <font size="-1">solarize</font></center> </td> <td><font size="-1">double factor_ = 50.0</font></td> <td><font size="-1">Solarize image (similar to effect seen when exposing a photographic film to light during the development process)</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="splice"></a> <font size="-1">splice</font></center> </td> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Geometry.html">Geometry</a> &geometry_</font></td> <td><font size="-1">splice the background color into the image</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="spread"></a> <font size="-1">spread</font></center> </td> <td><font size="-1">size_t amount_ = 3</font></td> <td><font size="-1">Spread pixels randomly within image by specified amount</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="stegano"></a> <font size="-1">stegano</font></center> </td> <td><font size="-1">const Image &watermark_</font></td> <td><font size="-1">Add a digital watermark to the image (based on second image)</font></td> </tr> <tr> <td> <center><a name="sparseColor"></a> <font size="-1">sparseColor</font></center> </td> <td><font size="-1">const ChannelType channel, const SparseColorMethod method, const size_t number_arguments, const double *arguments </font></td> <td><font size="-1">Sparse color image, given a set of coordinates, interpolates the colors found at those coordinates, across the whole image, using various methods.</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="statistics"></a> <font size="-1">statistics</font></center> </td> <td><font size="-1">ImageStatistics *statistics</font></td> <td><font size="-1">Obtain image statistics. Statistics are normalized to the range of 0.0 to 1.0 and are output to the specified ImageStatistics structure. The structure includes members maximum, minimum, mean, standard_deviation, and variance for each of these channels: red, green, blue, and opacity (e.g. statistics->red.maximum).</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="stereo"></a> <font size="-1">stereo</font></center> </td> <td><font size="-1">const Image &rightImage_</font></td> <td><font size="-1">Create an image which appears in stereo when viewed with red-blue glasses (Red image on left, blue on right)</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="swirl"></a> <font size="-1">swirl</font></center> </td> <td><font size="-1">double degrees_</font></td> <td><font size="-1">Swirl image (image pixels are rotated by degrees)</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="texture"></a> <font size="-1">texture</font></center> </td> <td><font size="-1">const Image &texture_</font></td> <td><font size="-1">Layer a texture on pixels matching image background color.</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="threshold"></a> <font size="-1">threshold</font></center> </td> <td><font size="-1">double threshold_</font></td> <td><font size="-1">Threshold image</font></td> </tr> <tr> <td style="text-align: center;" rowspan="2"> <center><a name="transform"></a> <font size="-1">transform</font></center> </td> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Geometry.html">Geometry</a> &imageGeometry_</font></td> <td rowspan="2"><font size="-1">Transform image based on image and crop geometries. Crop geometry is optional.</font></td> </tr> <tr> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Geometry.html">Geometry</a> &imageGeometry_, const <a href="http://www.imagemagick.org/Magick++/Geometry.html">Geometry</a> &cropGeometry_ </font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="transparent"></a> <font size="-1">transparent</font></center> </td> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Color.html">Color</a> &color_</font></td> <td><font size="-1">Add matte image to image, setting pixels matching color to transparent.</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="trim"></a> <font size="-1">trim</font></center> </td> <td><font size="-1">void</font></td> <td><font size="-1">Trim edges that are the background color from the image.</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="unsharpmask"></a> <font size="-1">unsharpmask</font></center> </td> <td><font size="-1">double radius_, double sigma_, double amount_, double threshold_</font></td> <td><font size="-1">Sharpen the image using the unsharp mask algorithm. The <i>radius</i>_ parameter specifies the radius of the Gaussian, in pixels, not counting the center pixel. The <i>sigma</i>_ parameter specifies the standard deviation of the Gaussian, in pixels. The <i>amount</i>_ parameter specifies the percentage of the difference between the original and the blur image that is added back into the original. The <i>threshold</i>_ parameter specifies the threshold in pixels needed to apply the diffence amount.</font></td> </tr> <tr> <td style="vertical-align: middle; text-align: center;"><small><a name="unsharpmaskChannel"></a>unsharpmaskChannel<br /> </small></td> <td style="vertical-align: middle;"><small>const ChannelType channel_, const double radius_, const double sigma_, const double amount_, const double threshold_<br /> </small></td> <td style="vertical-align: middle;"><small>Sharpen an image channel using the unsharp mask algorithm. The <span style="font-style: italic;">channel_</span> parameter specifies the channel to sharpen. </small><font size="-1">The <i>radius</i>_ parameter specifies the radius of the Gaussian, in pixels, not counting the center pixel. The <i>sigma</i>_ parameter specifies the standard deviation of the Gaussian, in pixels. The <i>amount</i>_ parameter specifies the percentage of the difference between the original and the blur image that is added back into the original. The <i>threshold</i>_ parameter specifies the threshold in pixels needed to apply the diffence amount.</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="wave"></a> <font size="-1">wave</font></center> </td> <td><font size="-1">double amplitude_ = 25.0, double wavelength_ = 150.0</font></td> <td><font size="-1">Alter an image along a sine wave.</font></td> </tr> <tr> <td style="text-align: center;" rowspan="5"> <center><a name="write"></a> <font size="-1">write</font></center> </td> <td><font size="-1">const string &imageSpec_</font></td> <td><font size="-1">Write image to a file using filename i<i>mageSpec_</i> .</font> <br /> <font size="-1"><b><font color="#ff0000">Caution: </font></b> if an image format is selected which is capable of supporting fewer colors than the original image or quantization has been requested, the original image will be quantized to fewer colors. Use a copy of the original if this is a problem.</font></td> </tr> <tr> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Blob.html">Blob</a> *blob_</font></td> <td rowspan="3"><font size="-1">Write image to a in-memory <a href="http://www.imagemagick.org/Magick++/Blob.html"> BLOB</a> stored in <i>blob_</i>. The <i>magick</i>_ parameter specifies the image format to write (defaults to <a href="Image++.html#magick">magick</a> ). The depth_ parameter species the image depth (defaults to <a href="Image++.html#depth"> depth</a> ).</font> <br /> <font size="-1"><b><font color="#ff0000">Caution: </font></b> if an image format is selected which is capable of supporting fewer colors than the original image or quantization has been requested, the original image will be quantized to fewer colors. Use a copy of the original if this is a problem.</font></td> </tr> <tr> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Blob.html">Blob</a> *blob_, std::string &magick_</font></td> </tr> <tr> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Blob.html">Blob</a> *blob_, std::string &magick_, size_t depth_</font></td> </tr> <tr> <td><font size="-1">const ssize_t x_, const ssize_t y_, const size_t columns_, const size_t rows_, const std::string &map_, const StorageType type_, void *pixels_</font></td> <td><font size="-1">Write pixel data into a buffer you supply. The data is saved either as char, short int, integer, float or double format in the order specified by the type_ parameter. For example, we want to extract scanline 1 of a 640x480 image as character data in red-green-blue order:</font> <p><font size="-1">  image.write(0,0,640,1,"RGB",0,pixels);</font> </p> <p><font size="-1">The parameters are as follows:</font> <br />  </p> <table border="0" width="100%"> <tbody> <tr> <td><font size="-1">x_</font></td> <td><font size="-1">Horizontal ordinate of left-most coordinate of region to extract.</font></td> </tr> <tr> <td><font size="-1">y_</font></td> <td><font size="-1">Vertical ordinate of top-most coordinate of region to extract.</font></td> </tr> <tr> <td><font size="-1">columns_</font></td> <td><font size="-1">Width in pixels of the region to extract.</font></td> </tr> <tr> <td><font size="-1">rows_</font></td> <td><font size="-1">Height in pixels of the region to extract.</font></td> </tr> <tr> <td><font size="-1">map_</font></td> <td><font size="-1">This character string can be any combination or order of R = red, G = green, B = blue, A = alpha, C = cyan, Y = yellow, M = magenta, and K = black. The ordering reflects the order of the pixels in the supplied pixel array.</font></td> </tr> <tr> <td><font size="-1">type_</font></td> <td><font size="-1">Pixel storage type (CharPixel, ShortPixel, IntegerPixel, FloatPixel, or DoublePixel)</font></td> </tr> <tr> <td><font size="-1">pixels_</font></td> <td><font size="-1">This array of values contain the pixel components as defined by the map_ and type_ parameters. The length of the arrays must equal the area specified by the width_ and height_ values and type_ parameters.</font></td> </tr> </tbody> </table> </td> </tr> <tr> <td style="text-align: center;"> <center><a name="resize"></a> <font size="-1">resize</font></center> </td> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Geometry.html">Geometry</a> &geometry_</font></td> <td><font size="-1">Resize image to specified size.</font></td> </tr> </tbody> </table> <center> <h3> <a name="Image Attributes"></a> Image Attributes</h3> </center> Image attributes are set and obtained via methods in Image. Except for methods which accept pointer arguments (e.g. c<tt>hromaBluePrimary)</tt> all methods return attributes by value. <p>Image attributes are easily used. For example, to set the resolution of the TIFF file "file.tiff" to 150 dots-per-inch (DPI) in both the horizontal and vertical directions, you can use the following example code: </p> <pre class="code"> string filename("file.tiff"); Image image; image.read(filename); image.resolutionUnits(PixelsPerInchResolution); image.density(Geometry(150,150)); // could also use image.density("150x150") image.write(filename) </pre> The supported image attributes and the method arguments required to obtain them are shown in the following table: <br />   <table border="1"> <caption>Image Attributes</caption> <tbody> <tr> <td> <center><b>Function</b></center> </td> <td> <center><b>Type</b></center> </td> <td> <center><b>Get Signature</b></center> </td> <td> <center><b>Set Signature</b></center> </td> <td> <center><b>Description</b></center> </td> </tr> <tr> <td> <center><a name="adjoin"></a> <font size="-1">adjoin</font></center> </td> <td><font size="-1">bool</font></td> <td><font size="-1">void</font></td> <td><font size="-1">bool flag_</font></td> <td><font size="-1">Join images into a single multi-image file.</font></td> </tr> <tr> <td> <center><a name="antiAlias"></a> <font size="-1">antiAlias</font></center> </td> <td><font size="-1">bool</font></td> <td><font size="-1">void</font></td> <td><font size="-1">bool flag_</font></td> <td><font size="-1">Control antialiasing of rendered Postscript and Postscript or TrueType fonts. Enabled by default.</font></td> </tr> <tr> <td> <center><a name="animationDelay"></a> <font size="-1">animation-</font> <br /> <font size="-1">Delay</font></center> </td> <td><font size="-1">size_t (0 to 65535)</font></td> <td><font size="-1">void</font></td> <td><font size="-1">size_t delay_</font></td> <td><font size="-1">Time in 1/100ths of a second (0 to 65535) which must expire before displaying the next image in an animated sequence. This option is useful for regulating the animation of a sequence  of GIF images within Netscape.</font></td> </tr> <tr> <td> <center><a name="animationIterations"></a> <font size="-1">animation-</font> <br /> <font size="-1">Iterations</font></center> </td> <td><font size="-1">size_t</font></td> <td><font size="-1">void</font></td> <td><font size="-1">size_t iterations_</font></td> <td><font size="-1">Number of iterations to loop an animation (e.g. Netscape loop extension) for.</font></td> </tr> <tr> <td style="vertical-align: middle; text-align: center;"><small><a name="attribute"></a>attribute<br /> </small></td> <td style="vertical-align: middle;"><small>string<br /> </small></td> <td style="vertical-align: top;" valign="top"><small>const std::string name_<br /> </small></td> <td style="vertical-align: top;" valign="top"><small>const std::string name_, const std::string value_</small></td> <td style="vertical-align: middle;"><small>An arbitrary named image attribute. Any number of named attributes may be attached to the image. For example, the image comment is a named image attribute with the name "comment". EXIF tags are attached to the image as named attributes. Use the syntax "EXIF:<tag>" to request an EXIF tag similar to "EXIF:DateTime".</small><br /> </td> </tr> <tr> <td> <center><a name="backgroundColor"></a> <font size="-1">background-</font> <br /> <font size="-1">Color</font></center> </td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Color.html">Color</a> </font></td> <td><font size="-1">void</font></td> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Color.html">Color</a> &color_</font></td> <td><font size="-1">Image background color</font></td> </tr> <tr> <td> <center><a name="backgroundTexture"></a> <font size="-1">background-</font> <br /> <font size="-1">Texture</font></center> </td> <td><font size="-1">string</font></td> <td><font size="-1">void</font></td> <td><font size="-1">const string &texture_</font></td> <td><font size="-1">Image file name to use as the background texture. Does not modify image pixels.</font></td> </tr> <tr> <td> <center><a name="baseColumns"></a> <font size="-1">baseColumns</font></center> </td> <td><font size="-1">size_t</font></td> <td><font size="-1">void</font></td> <td bgcolor="#666666"><font size="-1"> </font></td> <td><font size="-1">Base image width (before transformations)</font></td> </tr> <tr> <td> <center><a name="baseFilename"></a> <font size="-1">baseFilename</font></center> </td> <td><font size="-1">string</font></td> <td><font size="-1">void</font></td> <td bgcolor="#666666"><font size="-1"> </font></td> <td><font size="-1">Base image filename (before transformations)</font></td> </tr> <tr> <td> <center><a name="baseRows"></a> <font size="-1">baseRows</font></center> </td> <td><font size="-1">size_t</font></td> <td><font size="-1">void</font></td> <td bgcolor="#666666"><font size="-1"> </font></td> <td><font size="-1">Base image height (before transformations)</font></td> </tr> <tr> <td> <center><a name="borderColor"></a> <font size="-1">borderColor</font></center> </td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Color.html">Color</a> </font></td> <td><font size="-1">void</font></td> <td><font size="-1"> const <a href="http://www.imagemagick.org/Magick++/Color.html">Color</a> &color_</font></td> <td><font size="-1">Image border color</font></td> </tr> <tr> <td><a name="boundingBox"></a> <font size="-1">boundingBox</font></td> <td><font size="-1">Geometry</font></td> <td><font size="-1">void</font></td> <td bgcolor="#666666"><font size="-1"> </font></td> <td><font size="-1">Return smallest bounding box enclosing non-border pixels. The current fuzz value is used when discriminating between pixels. This is the crop bounding box used by crop(Geometry(0,0)).</font></td> </tr> <tr> <td> <center><a name="boxColor"></a> <font size="-1">boxColor</font></center> </td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Color.html">Color</a> </font></td> <td><font size="-1">void</font></td> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Color.html">Color</a> &boxColor_</font></td> <td><font size="-1">Base color that annotation text is rendered on.</font></td> </tr> <tr> <td><a name="cacheThreshold"></a> <font size="-1">cacheThreshold</font></td> <td><font size="-1">size_t</font></td> <td bgcolor="#666666"><font size="-1"> </font></td> <td><font size="-1">const size_t</font></td> <td><font size="-1">Pixel cache threshold in bytes. Once this threshold is exceeded, all subsequent pixels cache operations are to/from disk. This is a static method and the attribute it sets is shared by all Image objects.</font></td> </tr> <tr> <td style="vertical-align: middle;" valign="middle"><small><a name="channelDepth"></a>channelDepth<br /> </small></td> <td style="vertical-align: middle;" valign="middle"><small>size_t <br /> </small></td> <td style="vertical-align: middle;" valign="middle"><small>const ChannelType channel_<br /> </small></td> <td style="vertical-align: middle;"><small>const ChannelType channel_, const size_t depth_<br /> </small></td> <td style="vertical-align: middle;"><small>Channel modulus depth. The channel modulus depth represents the minimum number of bits required to support the channel without loss. Setting the channel's modulus depth modifies the channel (i.e. discards resolution) if the requested modulus depth is less than the current modulus depth, otherwise the channel is not altered. There is no attribute associated with the modulus depth so the current modulus depth is obtained by inspecting the pixels. As a result, the depth returned may be less than the most recently set channel depth. Subsequent image processing may result in increasing the channel depth.<br /> </small></td> </tr> <tr> <td> <center><a name="chromaBluePrimary"></a> <font size="-1">chroma-</font> <br /> <font size="-1">BluePrimary</font></center> </td> <td><font size="-1">double x & y</font></td> <td><font size="-1">double *x_, double *y_</font></td> <td><font size="-1">double x_, double y_</font></td> <td><font size="-1">Chromaticity blue primary point (e.g. x=0.15, y=0.06)</font></td> </tr> <tr> <td> <center><a name="chromaGreenPrimary"></a> <font size="-1">chroma-</font> <br /> <font size="-1">GreenPrimary</font></center> </td> <td><font size="-1">double x & y</font></td> <td><font size="-1">double *x_, double *y_</font></td> <td><font size="-1">double x_, double y_</font></td> <td><font size="-1">Chromaticity green primary point (e.g. x=0.3, y=0.6)</font></td> </tr> <tr> <td> <center><a name="chromaRedPrimary"></a> <font size="-1">chroma-</font> <br /> <font size="-1">RedPrimary</font></center> </td> <td><font size="-1">double x & y</font></td> <td><font size="-1">double *x_, double *y_</font></td> <td><font size="-1">double x_, double y_</font></td> <td><font size="-1">Chromaticity red primary point (e.g. x=0.64, y=0.33)</font></td> </tr> <tr> <td> <center><a name="chromaWhitePoint"></a> <font size="-1">chroma-</font> <br /> <font size="-1">WhitePoint</font></center> </td> <td><font size="-1">double x & y</font></td> <td><font size="-1">double*x_, double *y_</font></td> <td><font size="-1">double x_, double y_</font></td> <td><font size="-1">Chromaticity white point (e.g. x=0.3127, y=0.329)</font></td> </tr> <tr> <td> <center><a name="classType"></a> <font size="-1">classType</font></center> </td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Enumerations.html#ClassType">ClassType</a> </font></td> <td><font size="-1">void</font></td> <td><font size="-1"> <a href="http://www.imagemagick.org/Magick++/Enumerations.html#ClassType">ClassType</a> class_</font></td> <td><font size="-1">Image storage class.  Note that conversion from a DirectClass image to a PseudoClass image may result in a loss of color due to the limited size of the palette (256 or 65535 colors).</font></td> </tr> <tr> <td> <center><a name="clipMask"></a> <font size="-1">clipMask</font></center> </td> <td><font size="-1">Image</font></td> <td><font size="-1">void</font></td> <td><font size="-1">const Image &clipMask_</font></td> <td><font size="-1">Associate a clip mask image with the current image. The clip mask image must have the same dimensions as the current image or an exception is thrown. Clipping occurs wherever pixels are transparent in the clip mask image. Clipping Pass an invalid image to unset an existing clip mask.</font></td> </tr> <tr> <td> <center><a name="colorFuzz"></a> <font size="-1">colorFuzz</font></center> </td> <td><font size="-1">double</font></td> <td><font size="-1">void</font></td> <td><font size="-1">double fuzz_</font></td> <td><font size="-1">Colors within this distance are considered equal. A number of algorithms search for a target  color. By default the color must be exact. Use this option to match colors that are close to the target color in RGB space.</font></td> </tr> <tr> <td> <center><a name="colorMap"></a> <font size="-1">colorMap</font></center> </td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Color.html">Color</a> </font></td> <td><font size="-1">size_t index_</font></td> <td><font size="-1">size_t index_, const <a href="http://www.imagemagick.org/Magick++/Color.html"> Color</a> &color_</font></td> <td><font size="-1">Color at colormap index.</font></td> </tr> <tr> <td valign="middle"> <div style="text-align:center"><a name="colorMapSize"></a> <font size="-1">colorMapSize<br /> </font></div> </td> <td valign="middle"><font size="-1">size_t<br /> </font></td> <td valign="middle"><font size="-1">void<br /> </font></td> <td valign="middle"><font size="-1">size_t entries_<br /> </font></td> <td valign="middle"><font size="-1">Number of entries in the colormap. Setting the colormap size may extend or truncate the colormap. The maximum number of supported entries is specified by the <i>MaxColormapSize</i>constant, and is dependent on the value of QuantumDepth when ImageMagick is compiled. An exception is thrown if more entries are requested than may be supported. Care should be taken when truncating the colormap to ensure that the image colormap indexes reference valid colormap entries.</font><br /> </td> </tr> <tr> <td> <center><a name="colorSpace"></a> <font size="-1">colorSpace</font></center> </td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Enumerations.html#ColorspaceType">ColorspaceType</a> colorSpace_</font></td> <td><font size="-1">void</font></td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Enumerations.html#ColorspaceType">ColorspaceType</a> colorSpace_</font></td> <td><font size="-1">The colorspace (e.g. CMYK) used to represent the image pixel colors. Image pixels are always stored as RGB(A) except for the case of CMY(K).</font></td> </tr> <tr> <td> <center><a name="columns"></a> <font size="-1">columns</font></center> </td> <td><font size="-1">size_t</font></td> <td><font size="-1">void</font></td> <td bgcolor="#666666"><font size="-1"> </font></td> <td><font size="-1">Image width</font></td> </tr> <tr> <td> <center><a name="comment"></a> <font size="-1">comment</font></center> </td> <td><font size="-1">string</font></td> <td><font size="-1">void</font></td> <td bgcolor="#666666"><font size="-1"> </font></td> <td><font size="-1">Image comment</font></td> </tr> <tr> <td> <center><a name="compose"></a> <font size="-1">compose</font></center> </td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Enumerations.html#CompositeOperator">CompositeOperator</a> </font></td> <td><small><font size="-1"><small>void</small></font></small></td> <td><small><font size="-1"><small><a href="http://www.imagemagick.org/Magick++/Enumerations.html#CompositeOperator">CompositeOperator</a> compose_</small></font></small></td> <td><font size="-1">Composition operator to be used when composition is implicitly used (such as for image flattening).</font></td> </tr> <tr> <td> <center><a name="compressType"></a> <font size="-1">compress-</font> <br /> <font size="-1">Type</font></center> </td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Enumerations.html#CompressionType">CompressionType</a> </font></td> <td><small><font size="-1"><small>void</small></font></small></td> <td><small><font size="-1"><small><a href="http://www.imagemagick.org/Magick++/Enumerations.html#CompressionType">CompressionType</a> compressType_</small></font></small></td> <td><font size="-1">Image compresion type. The default is the compression type of the specified image file.</font></td> </tr> <tr> <td> <center><a name="debug"></a> <font size="-1">debug</font></center> </td> <td><font size="-1">bool</font></td> <td><small><font size="-1"><small>void</small></font></small></td> <td><small><font size="-1"><small>bool flag_</small></font></small></td> <td><font size="-1">Enable printing of internal debug messages from ImageMagick as it executes.</font></td> </tr> <tr> <td style="text-align: center; vertical-align: middle;"><small><a name="defineValue"></a>defineValue<br /> </small></td> <td style="vertical-align: middle; text-align: left;"><small>string<br /> </small></td> <td style="vertical-align: middle;"><small>const std::string &magick_, const std::string &key_<br /> </small></td> <td style="vertical-align: middle;"><small>const std::string &magick_, const std::string &key_,  const std::string &value_<br /> </small></td> <td style="vertical-align: top;"><small>Set or obtain a definition string to applied when encoding or decoding the specified format. The meanings of the definitions are format specific. The format is designated by the <span style="font-style: italic;">magick_</span> argument, the format-specific key is designated by <span style="font-style: italic;">key_</span>, and the associated value is specified by <span style="font-style: italic;">value_</span>. See the defineSet() method if the key must be removed entirely.</small><br /> </td> </tr> <tr> <td style="text-align: center; vertical-align: middle;"><small><a name="defineSet"></a>defineSet<br /> </small></td> <td style="vertical-align: middle; text-align: left;"><small>bool<br /> </small></td> <td style="vertical-align: middle;"><small>const std::string &magick_, const std::string &key_<br /> </small></td> <td style="vertical-align: middle;"><small>const std::string &magick_, const std::string &key_, bool flag_<br /> </small></td> <td style="vertical-align: middle;"><small>Set or obtain a definition flag to applied when encoding or decoding the specified format.</small><small>. Similar to the defineValue() method except that passing the <span style="font-style: italic;">flag_</span> value 'true' creates a value-less define with that format and key. Passing the <span style="font-style: italic;">f</span><span style="font-style: italic;">lag_</span> value 'false' removes any existing matching definition. The method returns 'true' if a matching key exists, and 'false' if no matching key exists.<br /> </small></td> </tr> <tr> <td> <center><a name="density"></a> <font size="-1">density</font></center> </td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Geometry.html">Geometry</a>   (default 72x72)</font></td> <td><font size="-1">void</font></td> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Geometry.html">Geometry</a> &density_</font></td> <td><font size="-1">Vertical and horizontal resolution in pixels of the image. This option specifies an image density when decoding a Postscript or Portable Document page. Often used with <i>psPageSize</i>.</font></td> </tr> <tr> <td> <center><a name="depth"></a> <font size="-1">depth</font></center> </td> <td><font size="-1"> size_t (8-32)</font></td> <td><font size="-1">void</font></td> <td><font size="-1">size_t depth_</font></td> <td><font size="-1">Image depth. Used to specify the bit depth when reading or writing  raw images or when the output format supports multiple depths. Defaults to the quantum depth that ImageMagick is compiled with.</font></td> </tr> <tr> <td> <center><a name="endian"></a> <font size="-1">endian</font></center> </td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Enumerations.html#EndianType">EndianType</a> </font></td> <td><font size="-1">void</font></td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Enumerations.html#EndianType">EndianType</a> endian_</font></td> <td><font size="-1">Specify (or obtain) endian option for formats which support it.</font></td> </tr> <tr> <td> <center><a name="directory"></a> <font size="-1">directory</font></center> </td> <td><font size="-1">string</font></td> <td><font size="-1">void</font></td> <td><font size="-1"> </font></td> <td><font size="-1">Tile names from within an image montage</font></td> </tr> <tr> <td> <center><a name="file"></a> <font size="-1">file</font></center> </td> <td><font size="-1">FILE *</font></td> <td><font size="-1">FILE *</font></td> <td><font size="-1">FILE *file_</font></td> <td><font size="-1">Image file descriptor.</font></td> </tr> <tr> <td> <center><a name="fileName"></a> <font size="-1">fileName</font></center> </td> <td><font size="-1">string</font></td> <td><font size="-1">void</font></td> <td><font size="-1">const string &fileName_</font></td> <td><font size="-1">Image file name.</font></td> </tr> <tr> <td> <center><a name="fileSize"></a> <font size="-1">fileSize</font></center> </td> <td><font size="-1">off_t</font></td> <td><font size="-1">void</font></td> <td bgcolor="#666666"><font size="-1"> </font></td> <td><font size="-1">Number of bytes of the image on disk</font></td> </tr> <tr> <td> <center><a name="fillColor"></a> <font size="-1">fillColor</font></center> </td> <td><font size="-1">Color</font></td> <td><font size="-1">void</font></td> <td><font size="-1">const Color &fillColor_</font></td> <td><font size="-1">Color to use when filling drawn objects</font></td> </tr> <tr> <td> <center><a name="fillPattern"></a> <font size="-1">fillPattern</font></center> </td> <td><font size="-1">Image</font></td> <td><font size="-1">void</font></td> <td><font size="-1">const Image &fillPattern_</font></td> <td><font size="-1">Pattern image to use when filling drawn objects.</font></td> </tr> <tr> <td> <center><a name="fillRule"></a> <font size="-1">fillRule</font></center> </td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Enumerations.html#FillRule">FillRule</a> </font></td> <td><font size="-1">void</font></td> <td><font size="-1">const Magick::FillRule &fillRule_</font></td> <td><font size="-1">Rule to use when filling drawn objects.</font></td> </tr> <tr> <td> <center><a name="filterType"></a> <font size="-1">filterType</font></center> </td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Enumerations.html#FilterTypes">FilterTypes</a> </font></td> <td><font size="-1">void</font></td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Enumerations.html#FilterTypes">FilterTypes</a> filterType_</font></td> <td><font size="-1">Filter to use when resizing image. The reduction filter employed has a sigificant effect on the time required to resize an image and the resulting quality. The default filter is <i>Lanczos</i> which has been shown to produce high quality results when reducing most images.</font></td> </tr> <tr> <td> <center><a name="font"></a> <font size="-1">font</font></center> </td> <td><font size="-1">string</font></td> <td><font size="-1">void</font></td> <td><font size="-1">const string &font_</font></td> <td><font size="-1">Text rendering font. If the font is a fully qualified X server font name, the font is obtained from an X  server. To use a TrueType font, precede the TrueType filename with an @. Otherwise, specify  a  Postscript font name (e.g. "helvetica").</font></td> </tr> <tr> <td> <center><a name="fontPointsize"></a> <font size="-1">fontPointsize</font></center> </td> <td><font size="-1">size_t</font></td> <td><font size="-1">void</font></td> <td><font size="-1">size_t pointSize_</font></td> <td><font size="-1">Text rendering font point size</font></td> </tr> <tr> <td> <center><a name="fontTypeMetrics"></a> <font size="-1">fontTypeMetrics</font></center> </td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/TypeMetric.html">TypeMetric</a> </font></td> <td><font size="-1">const std::string &text_, <a href="http://www.imagemagick.org/Magick++/TypeMetric.html"> TypeMetric</a> *metrics</font></td> <td bgcolor="#666666"><font size="-1"> </font></td> <td><font size="-1">Update metrics with font type metrics using specified <i>text</i>, and current <a href="Image++.html#font">font</a> and <a href="Image++.html#fontPointsize">fontPointSize</a> settings.</font></td> </tr> <tr> <td> <center><a name="format"></a> <font size="-1">format</font></center> </td> <td><font size="-1">string</font></td> <td><font size="-1">void</font></td> <td bgcolor="#666666"><font size="-1"> </font></td> <td><font size="-1">Long form image format description.</font></td> </tr> <tr> <td> <center><a name="gamma"></a> <font size="-1">gamma</font></center> </td> <td><font size="-1">double (typical range 0.8 to 2.3)</font></td> <td><font size="-1">void</font></td> <td bgcolor="#666666"><font size="-1"> </font></td> <td><font size="-1">Gamma level of the image. The same color image displayed on two different  workstations  may  look  different due to differences in the display monitor.  Use gamma correction  to  adjust  for this  color  difference.</font></td> </tr> <tr> <td> <center><a name="geometry"></a> <font size="-1">geometry</font></center> </td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Geometry.html">Geometry</a> </font></td> <td><font size="-1">void</font></td> <td bgcolor="#666666"><font size="-1"> </font></td> <td><font size="-1">Preferred size of the image when encoding.</font></td> </tr> <tr> <td> <center><a name="gifDisposeMethod"></a> <font size="-1">gifDispose-</font> <br /> <font size="-1">Method</font></center> </td> <td><font size="-1">size_t</font> <br /> <font size="-1">{ 0 = Disposal not specified,</font> <br /> <font size="-1">1 = Do not dispose of graphic,</font> <br /> <font size="-1">3 = Overwrite graphic with background color,</font> <br /> <font size="-1">4 = Overwrite graphic with previous graphic. }</font></td> <td><font size="-1">void</font></td> <td><font size="-1">size_t disposeMethod_</font></td> <td><font size="-1">GIF disposal method. This option is used to control how successive frames are rendered (how the preceding frame is disposed of) when creating a GIF animation.</font></td> </tr> <tr> <td> <center><a name="iccColorProfile"></a> <font size="-1">iccColorProfile</font></center> </td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Blob.html">Blob</a> </font></td> <td><font size="-1">void</font></td> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Blob.html">Blob</a> &colorProfile_</font></td> <td><font size="-1">ICC color profile. Supplied via a <a href="http://www.imagemagick.org/Magick++/Blob.html"> Blob</a> since Magick++/ and ImageMagick do not currently support formating this data structure directly.  Specifications are available from the <a href="http://www.color.org/"> International Color Consortium</a> for the format of ICC color profiles.</font></td> </tr> <tr> <td> <center><a name="interlaceType"></a> <font size="-1">interlace-</font> <br /> <font size="-1">Type</font></center> </td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Enumerations.html#InterlaceType">InterlaceType</a> </font></td> <td><font size="-1">void</font></td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Enumerations.html#InterlaceType">InterlaceType</a> interlace_</font></td> <td><font size="-1">The type of interlacing scheme (default <i>NoInterlace</i> ). This option is used to specify the type of  interlacing scheme  for  raw  image formats such as RGB or YUV. <i>NoInterlace</i> means do not  interlace, <i>LineInterlace</i> uses scanline interlacing, and <i>PlaneInterlace</i> uses plane interlacing. <i> PartitionInterlace</i> is like <i>PlaneInterlace</i> except the  different planes  are saved  to individual files (e.g.  image.R, image.G, and image.B). Use <i>LineInterlace</i> or <i> PlaneInterlace</i> to create an interlaced GIF or progressive JPEG image.</font></td> </tr> <tr> <td> <center><a name="iptcProfile"></a> <font size="-1">iptcProfile</font></center> </td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Blob.html">Blob</a> </font></td> <td><font size="-1">void</font></td> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Blob.html">Blob</a> & iptcProfile_</font></td> <td><font size="-1">IPTC profile. Supplied via a <a href="http://www.imagemagick.org/Magick++/Blob.html"> Blob</a> since Magick++ and ImageMagick do not currently  support formating this data structure directly. Specifications are available from the <a href="http://www.iptc.org/"> International Press Telecommunications Council</a> for IPTC profiles.</font></td> </tr> <tr> <td> <center><a name="label"></a> <font size="-1">label</font></center> </td> <td><font size="-1">string</font></td> <td><font size="-1">void</font></td> <td><font size="-1">const string &label_</font></td> <td><font size="-1">Image label</font></td> </tr> <tr> <td> <center><a name="magick"></a> <font size="-1">magick</font></center> </td> <td><font size="-1">string</font></td> <td><font size="-1">void</font></td> <td><font size="-1"> const string &magick_</font></td> <td><font size="-1">Get image format (e.g. "GIF")</font></td> </tr> <tr> <td> <center><a name="matte"></a> <font size="-1">matte</font></center> </td> <td><font size="-1">bool</font></td> <td><font size="-1">void</font></td> <td><font size="-1">bool matteFlag_</font></td> <td><font size="-1">True if the image has transparency. If set True, store matte channel if  the image has one otherwise create an opaque one.</font></td> </tr> <tr> <td> <center><a name="matteColor"></a> <font size="-1">matteColor</font></center> </td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Color.html">Color</a> </font></td> <td><font size="-1">void</font></td> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Color.html">Color</a> &matteColor_</font></td> <td><font size="-1">Image matte (frame) color</font></td> </tr> <tr> <td> <center><a name="meanErrorPerPixel"></a> <font size="-1">meanError-</font> <br /> <font size="-1">PerPixel</font></center> </td> <td><font size="-1">double</font></td> <td><font size="-1">void</font></td> <td bgcolor="#666666"><font size="-1"> </font></td> <td><font size="-1">The mean error per pixel computed when an image is color reduced. This parameter is only valid if verbose is set to true and the image has just been quantized.</font></td> </tr> <tr> <td style="text-align: center; vertical-align: middle;"><font size="-1"><a name="modulusDepth"></a>modulusDepth<br /> </font></td> <td style="text-align: left; vertical-align: middle;"><small>size_t <br /> </small></td> <td style="text-align: left; vertical-align: middle;"><small><font size="-1"><small>void<br /> </small></font></small></td> <td style="text-align: left; vertical-align: middle;"><small>size_t depth_<br /> </small></td> <td style="text-align: left; vertical-align: middle;"><small>Image modulus depth (minimum number of bits required to support red/green/blue components without loss of accuracy). The pixel modulus depth may be decreased by supplying a value which is less than the current value, updating the pixels (reducing accuracy) to the new depth. The pixel modulus depth can not be increased over the current value using this method.<br /> </small></td> </tr> <tr> <td> <center><a name="monochrome"></a> <font size="-1">monochrome</font></center> </td> <td><font size="-1">bool</font></td> <td><font size="-1">void</font></td> <td><font size="-1">bool flag_</font></td> <td><font size="-1">Transform the image to black and white</font></td> </tr> <tr> <td> <center><a name="montageGeometry"></a> <font size="-1">montage-</font> <br /> <font size="-1">Geometry</font></center> </td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Geometry.html">Geometry</a> </font></td> <td><font size="-1">void</font></td> <td bgcolor="#666666"><font size="-1"> </font></td> <td><font size="-1">Tile size and offset within an image montage. Only valid for montage images.</font></td> </tr> <tr> <td> <center><a name="normalizedMaxError"></a> <font size="-1">normalized-</font> <br /> <font size="-1">MaxError</font></center> </td> <td><font size="-1">double</font></td> <td><font size="-1">void</font></td> <td bgcolor="#666666"><font size="-1"> </font></td> <td><font size="-1">The normalized max error per pixel computed when an image is color reduced. This parameter is only valid if verbose is set to true and the image has just been quantized.</font></td> </tr> <tr> <td> <center><a name="normalizedMeanError"></a> <font size="-1">normalized-</font> <br /> <font size="-1">MeanError</font></center> </td> <td><font size="-1">double</font></td> <td><font size="-1">void</font></td> <td bgcolor="#666666"><font size="-1"> </font></td> <td><font size="-1">The normalized mean error per pixel computed when an image is color reduced. This parameter is only valid if verbose is set to true and the image has just been quantized.</font></td> </tr> <tr> <td style="text-align: center; vertical-align: middle;"><small><a name="orientation"></a>orientation<br /> </small></td> <td style="vertical-align: middle;"><small><a href="http://www.imagemagick.org/Magick++/Enumerations.html#OrientationType">OrientationType</a></small></td> <td style="vertical-align: top;"><small>void</small><br /> </td> <td style="vertical-align: middle;"><small><a href="http://www.imagemagick.org/Magick++/Enumerations.html#OrientationType">OrientationType</a> orientation_</small></td> <td style="vertical-align: top;"><small>Image orientation.  Supported by some file formats such as DPX and TIFF. Useful for turning the right way up.<br /> </small></td> </tr> <tr> <td> <center><a name="packets"></a> <font size="-1">packets</font></center> </td> <td><font size="-1">size_t</font></td> <td><font size="-1">void</font></td> <td bgcolor="#666666"><font size="-1"> </font></td> <td><font size="-1">The number of runlength-encoded packets in</font> <br /> <font size="-1">the image</font></td> </tr> <tr> <td> <center><a name="packetSize"></a> <font size="-1">packetSize</font></center> </td> <td><font size="-1">size_t</font></td> <td><font size="-1">void</font></td> <td bgcolor="#666666"><font size="-1"> </font></td> <td><font size="-1">The number of bytes in each pixel packet</font></td> </tr> <tr> <td> <center><a name="page"></a> <font size="-1">page</font></center> </td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Geometry.html#PostscriptPageSize">Geometry</a> </font></td> <td><font size="-1">void</font></td> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Geometry.html#PostscriptPageSize"> Geometry</a> &pageSize_</font></td> <td><font size="-1">Preferred size and location of an image canvas.</font> <p><font size="-1">Use this option to specify the dimensions and position of the Postscript page in dots per inch or a TEXT page in pixels. This option is typically used in concert with <i><a href="Image++.html#density"> density</a> </i>.</font> </p> <p><font size="-1">Page may also be used to position a GIF image (such as for a scene in an animation)</font></p> </td> </tr> <tr> <td> <center><a name="pixelColor"></a> <font size="-1">pixelColor</font></center> </td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Color.html">Color</a> </font></td> <td><font size="-1">ssize_t x_, ssize_t y_</font></td> <td><font size="-1">ssize_t x_, ssize_t y_, const <a href="http://www.imagemagick.org/Magick++/Color.html"> Color</a> &color_</font></td> <td><font size="-1">Get/set pixel color at location x & y.</font></td> </tr> <tr> <td valign="top"> <div style="text-align:center"><a name="profile"></a> <small>profile</small><br /> </div> </td> <td valign="top"><a href="http://www.imagemagick.org/Magick++/Blob.html"><small> Blob</small><small><br /> </small></a> </td> <td valign="top"><small>const std::string name_</small><small><br /> </small></td> <td valign="top"><small>const std::string name_, const Blob &colorProfile_</small><small><br /> </small></td> <td valign="top"><small>Get/set/remove </small><small> a named profile</small><small>. Valid names include </small><small>"*", "8BIM", "ICM", "IPTC", or a user/format-defined profile name. </small><br /> </td> </tr> <tr> <td> <center><a name="quality"></a> <font size="-1">quality</font></center> </td> <td><font size="-1">size_t (0 to 100)</font></td> <td><font size="-1">void</font></td> <td><font size="-1">size_t quality_</font></td> <td><font size="-1">JPEG/MIFF/PNG compression level (default 75).</font></td> </tr> <tr> <td> <center><a name="quantizeColors"></a> <font size="-1">quantize-</font> <br /> <font size="-1">Colors</font></center> </td> <td><font size="-1">size_t</font></td> <td><font size="-1">void</font></td> <td><font size="-1">size_t colors_</font></td> <td><font size="-1">Preferred number of colors in the image. The actual number of colors in the image may be less than your request, but never more. Images with less unique colors than specified with this option will have any duplicate or unused colors removed.</font></td> </tr> <tr> <td> <center><a name="quantizeColorSpace"></a> <font size="-1">quantize-</font> <br /> <font size="-1">ColorSpace</font></center> </td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Enumerations.html#ColorspaceType">ColorspaceType</a> </font></td> <td><font size="-1">void</font></td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Enumerations.html#ColorspaceType">ColorspaceType</a> colorSpace_</font></td> <td><font size="-1">Colorspace to quantize colors in (default RGB). Empirical evidence suggests that distances in color spaces such as YUV or YIQ correspond to perceptual color differences more closely than do distances in RGB space. These color spaces may give better results when color reducing an image.</font></td> </tr> <tr> <td> <center><a name="quantizeDither"></a> <font size="-1">quantize-</font> <br /> <font size="-1">Dither</font></center> </td> <td><font size="-1">bool</font></td> <td><font size="-1">void</font></td> <td><font size="-1">bool flag_</font></td> <td><font size="-1">Apply Floyd/Steinberg error diffusion to the image. The basic strategy of dithering is to  trade  intensity resolution  for  spatial  resolution  by  averaging the intensities  of  several  neighboring  pixels. Images which  suffer  from  severe  contouring  when  reducing colors can be improved with this option. The quantizeColors or monochrome option must be set for this option to take effect.</font></td> </tr> <tr> <td> <center><a name="quantizeTreeDepth"></a> <font size="-1">quantize-</font> <br /> <font size="-1">TreeDepth</font></center> </td> <td><font size="-1">size_t </font></td> <td><font size="-1">void</font></td> <td><font size="-1">size_t treeDepth_</font></td> <td><font size="-1">Depth of the quantization color classification tree. Values of 0 or 1 allow selection of the optimal tree depth for the color reduction algorithm. Values between 2 and 8 may be used to manually adjust the tree depth.</font></td> </tr> <tr> <td> <center><a name="renderingIntent"></a> <font size="-1">rendering-</font> <br /> <font size="-1">Intent</font></center> </td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Enumerations.html#RenderingIntent">RenderingIntent</a> </font></td> <td><font size="-1">void</font></td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Enumerations.html#RenderingIntent">RenderingIntent</a> render_</font></td> <td><font size="-1">The type of rendering intent</font></td> </tr> <tr> <td> <center><a name="resolutionUnits"></a> <font size="-1">resolution-</font> <br /> <font size="-1">Units</font></center> </td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Enumerations.html#ResolutionType">ResolutionType</a> </font></td> <td><font size="-1">void</font></td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Enumerations.html#ResolutionType">ResolutionType</a> units_</font></td> <td><font size="-1">Units of image resolution</font></td> </tr> <tr> <td> <center><a name="rows"></a> <font size="-1">rows</font></center> </td> <td><font size="-1">size_t</font></td> <td><font size="-1">void</font></td> <td bgcolor="#666666"><font size="-1"> </font></td> <td><font size="-1">The number of pixel rows in the image</font></td> </tr> <tr> <td> <center><a name="scene"></a> <font size="-1">scene</font></center> </td> <td><font size="-1">size_t</font></td> <td><font size="-1">void</font></td> <td><font size="-1">size_t scene_</font></td> <td><font size="-1">Image scene number</font></td> </tr> <tr> <td> <center><a name="signature"></a> <font size="-1">signature</font></center> </td> <td><font size="-1">string</font></td> <td><font size="-1">bool force_ = false</font></td> <td bgcolor="#666666"><font size="-1"> </font></td> <td><font size="-1">Image MD5 signature. Set force_ to 'true' to force re-computation of signature.</font></td> </tr> <tr> <td> <center><a name="size"></a> <font size="-1">size</font></center> </td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Geometry.html">Geometry</a> </font></td> <td><font size="-1">void</font></td> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Geometry.html">Geometry</a> &geometry_</font></td> <td><font size="-1">Width and height of a raw image (an image which does not support width and height information).  Size may also be used to affect the image size read from a multi-resolution format (e.g. Photo CD, JBIG, or JPEG.</font></td> </tr> <tr> <td style="text-align: center;"> <center><a name="strip"></a> <font size="-1">strip</font></center> </td> <td><font size="-1">void</font></td> <td><font size="-1">strips an image of all profiles and comments.</font></td> </tr> <tr> <td> <center><a name="strokeAntiAlias"></a> <font size="-1">strokeAntiAlias</font></center> </td> <td><font size="-1">bool</font></td> <td><font size="-1">void</font></td> <td><font size="-1">bool flag_</font></td> <td><font size="-1">Enable or disable anti-aliasing when drawing object outlines.</font></td> </tr> <tr> <td> <center><a name="strokeColor"></a> <font size="-1">strokeColor</font></center> </td> <td><font size="-1">Color</font></td> <td><font size="-1">void</font></td> <td><font size="-1">const Color &strokeColor_</font></td> <td><font size="-1">Color to use when drawing object outlines</font></td> </tr> <tr> <td> <center><a name="strokeDashOffset"></a> <font size="-1">strokeDashOffset</font></center> </td> <td><font size="-1">size_t</font></td> <td><font size="-1">void</font></td> <td><font size="-1">double strokeDashOffset_</font></td> <td><font size="-1">While drawing using a dash pattern, specify distance into the dash pattern to start the dash (default 0).</font></td> </tr> <tr> <td> <center><a name="strokeDashArray"></a> <font size="-1">strokeDashArray</font></center> </td> <td><font size="-1">const double*</font></td> <td><font size="-1">void</font></td> <td><font size="-1">const double* strokeDashArray_</font></td> <td><font size="-1">Specify the pattern of dashes and gaps used to stroke paths. The strokeDashArray represents a zero-terminated array of numbers that specify the lengths (in pixels) of alternating dashes and gaps in user units. If an odd number of values is provided, then the list of values is repeated to yield an even number of values.  A typical strokeDashArray_ array might contain the members 5 3 2 0, where the zero value indicates the end of the pattern array.</font></td> </tr> <tr> <td> <center><a name="strokeLineCap"></a> <font size="-1">strokeLineCap</font></center> </td> <td><font size="-1">LineCap</font></td> <td><font size="-1">void</font></td> <td><font size="-1">LineCap lineCap_</font></td> <td><font size="-1">Specify the shape to be used at the corners of paths (or other vector shapes) when they are stroked. Values of LineJoin are UndefinedJoin, MiterJoin, RoundJoin, and BevelJoin.</font></td> </tr> <tr> <td> <center><a name="strokeLineJoin"></a> <font size="-1">strokeLineJoin</font></center> </td> <td><font size="-1">LineJoin</font></td> <td><font size="-1">void</font></td> <td><font size="-1">LineJoin lineJoin_</font></td> <td><font size="-1">Specify the shape to be used at the corners of paths (or other vector shapes) when they are stroked. Values of LineJoin are UndefinedJoin, MiterJoin, RoundJoin, and BevelJoin.</font></td> </tr> <tr> <td> <center><a name="strokeMiterLimit"></a> <font size="-1">strokeMiterLimit</font></center> </td> <td><font size="-1">size_t</font></td> <td><font size="-1">void</font></td> <td><font size="-1">size_t miterLimit_</font></td> <td><font size="-1">Specify miter limit. When two line segments meet at a sharp angle and miter joins have been specified for 'lineJoin', it is possible for the miter to extend far beyond the thickness of the line stroking the path. The miterLimit' imposes a limit on the ratio of the miter length to the 'lineWidth'. The default value of this parameter is 4.</font></td> </tr> <tr> <td> <center><a name="strokeWidth"></a> <font size="-1">strokeWidth</font></center> </td> <td><font size="-1">double</font></td> <td><font size="-1">void</font></td> <td><font size="-1">double strokeWidth_</font></td> <td><font size="-1">Stroke width for use when drawing vector objects (default one)</font></td> </tr> <tr> <td> <center><a name="strokePattern"></a> <font size="-1">strokePattern</font></center> </td> <td><font size="-1">Image</font></td> <td><font size="-1">void</font></td> <td><font size="-1">const Image &strokePattern_</font></td> <td><font size="-1">Pattern image to use while drawing object stroke (outlines).</font></td> </tr> <tr> <td> <center><a name="subImage"></a> <font size="-1">subImage</font></center> </td> <td><font size="-1">size_t</font></td> <td><font size="-1">void</font></td> <td><font size="-1">size_t subImage_</font></td> <td><font size="-1">Subimage of an image sequence</font></td> </tr> <tr> <td> <center><a name="subRange"></a> <font size="-1">subRange</font></center> </td> <td><font size="-1">size_t</font></td> <td><font size="-1">void</font></td> <td><font size="-1">size_t subRange_</font></td> <td><font size="-1">Number of images relative to the base image</font></td> </tr> <tr> <td valign="middle"> <div style="text-align:center"><a name="textEncoding"></a> <small>textEncoding</small><br /> </div> </td> <td valign="middle"><small>string</small><small><br /> </small></td> <td valign="middle"><small>void</small><small><br /> </small></td> <td valign="middle"><small>const std::string &encoding_</small><small><br /> </small></td> <td valign="top"><small>Specify the code set to use for text annotations. The only character encoding which may be specified at this time is "UTF-8" for representing </small><small><a href="http://www.unicode.org/"> Unicode </a> </small><small>as a sequence of bytes. Specify an empty string to use the default ASCII encoding. Successful text annotation using Unicode may require fonts designed to support Unicode.</small><br /> </td> </tr> <tr> <td> <center><a name="tileName"></a> <font size="-1">tileName</font></center> </td> <td><font size="-1">string</font></td> <td><font size="-1">void</font></td> <td><font size="-1">const string &tileName_</font></td> <td><font size="-1">Tile name</font></td> </tr> <tr> <td> <center><a name="totalColors"></a> <font size="-1">totalColors</font></center> </td> <td><font size="-1">size_t</font></td> <td><font size="-1">void</font></td> <td bgcolor="#666666"><font size="-1"> </font></td> <td><font size="-1">Number of colors in the image</font></td> </tr> <tr> <td> <center><a name="type"></a> <font size="-1">type</font></center> </td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Enumerations.html#ImageType">ImageType</a> </font></td> <td><font size="-1">void</font></td> <td bgcolor="#ffffff"><font size="-1"><a href="http://www.imagemagick.org/Magick++/Enumerations.html#ImageType"> ImageType</a> </font></td> <td><font size="-1">Image type.</font></td> </tr> <tr> <td> <center><a name="verbose"></a> <font size="-1">verbose</font></center> </td> <td><font size="-1">bool</font></td> <td><font size="-1">void</font></td> <td><font size="-1">bool verboseFlag_</font></td> <td><font size="-1">Print detailed information about the image</font></td> </tr> <tr> <td> <center><a name="view"></a> <font size="-1">view</font></center> </td> <td><font size="-1">string</font></td> <td><font size="-1">void</font></td> <td><font size="-1">const string &view_</font></td> <td><font size="-1">FlashPix viewing parameters.</font></td> </tr> <tr> <td> <center><a name="virtualPixelMethod"></a> <font size="-1">virtualPixelMethod</font></center> </td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Enumerations.html#VirtualPixelMethod">VirtualPixelMethod</a> </font></td> <td><small><font size="-1"><small>void</small></font></small></td> <td><small><font size="-1"><small><a href="http://www.imagemagick.org/Magick++/Enumerations.html#VirtualPixelMethod">VirtualPixelMethod</a> virtualPixelMethod_</small></font></small></td> <td><font size="-1">Image virtual pixel method.</font></td> </tr> <tr> <td> <center><a name="x11Display"></a> <font size="-1">x11Display</font></center> </td> <td><font size="-1">string (e.g. "hostname:0.0")</font></td> <td><font size="-1">void</font></td> <td><font size="-1">const string &display_</font></td> <td><font size="-1">X11 display to display to, obtain fonts from, or to capture image from</font></td> </tr> <tr> <td> <center><a name="xResolution"></a> <font size="-1">xResolution</font></center> </td> <td><font size="-1">double</font></td> <td><font size="-1">void</font></td> <td bgcolor="#666666"><font size="-1"> </font></td> <td><font size="-1">x resolution of the image</font></td> </tr> <tr> <td> <center><a name="yResolution"></a> <font size="-1">yResolution</font></center> </td> <td><font size="-1">double</font></td> <td><font size="-1">void</font></td> <td bgcolor="#666666"><font size="-1"> </font></td> <td><font size="-1">y resolution of the image</font></td> </tr> </tbody> </table> <center> <h3> <a name="Raw Image Pixel Access"></a> Low-Level Image Pixel Access</h3> </center> Image pixels (of type <i><a href="http://www.imagemagick.org/Magick++/Quantum.html">Quantum</a> </i>) may be accessed directly via the <i>Image Pixel Cache</i> .  The image pixel cache is a rectangular window into the actual image pixels (which may be in memory, memory-mapped from a disk file, or entirely on disk). Two interfaces exist to access the <i>Image Pixel Cache.</i> The interface described here (part of the <i>Image</i> class) supports only one view at a time. See the <i><a href="http://www.imagemagick.org/Magick++/Pixels.html">Pixels</a> </i> class for a more abstract interface which supports simultaneous pixel views (up to the number of rows). As an analogy, the interface described here relates to the <i><a href="http://www.imagemagick.org/Magick++/Pixels.html">Pixels</a> </i> class as stdio's gets() relates to fgets(). The <i><a href="http://www.imagemagick.org/Magick++/Pixels.html"> Pixels</a> </i>class provides the more general form of the interface. <p>Obtain existing image pixels via <i>getPixels()</i>. Create a new pixel region using <i>setPixels().</i></p> <p>In order to ensure that only the current generation of the image is modified, the Image's <a href="Image++.html#modifyImage">modifyImage()</a> method should be invoked to reduce the reference count on the underlying image to one. If this is not done, then it is possible for a previous generation of the image to be modified due to the use of reference counting when copying or constructing an Image.<br /> </p> <p>Depending on the capabilities of the operating system, and the relationship of the window to the image, the pixel cache may be a copy of the pixels in the selected window, or it may be the actual image pixels. In any case calling <i>syncPixels()</i> insures that the base image is updated with the contents of the modified pixel cache. The method <i> readPixels()</i> supports copying foreign pixel data formats into the pixel cache according to the <i>QuantumTypes</i>. The method <i>writePixels()</i> supports copying the pixels in the cache to a foreign pixel representation according to the format specified by <i>QuantumTypes</i>.</p> <p>The pixel region is effectively a small image in which the pixels may be accessed, addressed, and updated, as shown in the following example:</p> <pre class="code"> <img class="icon" src="http://www.imagemagick.org/Magick++/Cache.png" name="Graphic1" width="254" border="0" alt="cache" /> Image image("cow.png"); // Ensure that there are no other references to this image. image.modifyImage(); // Set the image type to TrueColor DirectClass representation. image.type(TrueColorType); // Request pixel region with size 60x40, and top origin at 20x30 ssize_t columns = 60; Quantum *pixel_cache = image.getPixels(20,30,columns,40); // Set pixel at column 5, and row 10 in the pixel cache to red. ssize_t column = 5; ssize_t row = 10; Quantum *pixel = pixel_cache+row*columns+column; *pixel = Color("red"); // Save changes to underlying image . image.syncPixels(); // Save updated image to file. image.write("horse.png"); </pre> <p>The image cache supports the following methods: <br />  </p> <table border="1" width="100%"> <caption>Image Cache Methods</caption> <tbody> <tr> <td> <center><b>Method</b></center> </td> <td> <center><b>Returns</b></center> </td> <td> <center><b>Signature</b></center> </td> <td> <center><b>Description</b></center> </td> </tr> <tr> <td> <center><a name="getConstPixels"></a> <font size="-1">getConstPixels</font></center> </td> <td><font size="-1">const <a href="http://www.imagemagick.org/Magick++/Quantum.html">Quantum</a> *</font></td> <td><font size="-1">const ssize_t x_, const ssize_t y_, const size_t columns_, const size_t rows_</font></td> <td><font size="-1">Transfers pixels from the image to the pixel cache as defined by the specified rectangular region. </font><font size="-1">The returned pointer remains valid until the next getPixel, getConstPixels, or setPixels call and should never be deallocated by the user.</font></td> </tr> <tr> <td> <center><a name="getConstIndexes"></a> <font size="-1">getConstIndexes</font></center> </td> <td><font size="-1">const IndexPacket*</font></td> <td><font size="-1">void</font></td> <td><font size="-1">Returns a pointer to the Image pixel indexes corresponding to a previous </font><font size="-1">getPixel, getConstPixels, or setPixels call.  </font><font size="-1">The returned pointer remains valid until the next getPixel, getConstPixels, or setPixels call and should never be deallocated by the user.</font><font size="-1"> Only valid for PseudoClass images or CMYKA images. The pixel indexes represent an array of type IndexPacket, with each entry corresponding to an x,y pixel position. For PseudoClass images, the entry's value is the offset into the colormap (see <a href="Image++.html#colorMap">colorMap</a> ) for that pixel. For CMYKA images, the indexes are used to contain the alpha channel.</font></td> </tr> <tr> <td> <center><a name="getIndexes"></a> <font size="-1">getIndexes</font></center> </td> <td><font size="-1">IndexPacket*</font></td> <td><font size="-1">void</font></td> <td><font size="-1">Returns a pointer to the Image pixel indexes corresponding to the pixel region requested by the last <a href="Image++.html#getConstPixels">getConstPixels</a> , <a href="Image++.html#getPixels">getPixels</a> , or <a href="Image++.html#setPixels">setPixels</a> call. </font><font size="-1">The returned pointer remains valid until the next getPixel, getConstPixels, or setPixels call and should never be deallocated by the user.</font><font size="-1"> </font><font size="-1">Only valid for PseudoClass images or CMYKA images. The pixel indexes represent an array of type IndexPacket, with each entry corresponding to a pixel x,y position. For PseudoClass images, the entry's value is the offset into the colormap (see <a href="Image++.html#colorMap">colorMap</a> ) for that pixel. For CMYKA images, the indexes are used to contain the alpha channel.</font></td> </tr> <tr> <td> <center><a name="getPixels"></a> <font size="-1">getPixels</font></center> </td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Quantum.html">Quantum</a> *</font></td> <td><font size="-1">const ssize_t x_, const ssize_t y_, const size_t columns_, const size_t rows_</font></td> <td><font size="-1">Transfers pixels from the image to the pixel cache as defined by the specified rectangular region. Modified pixels may be subsequently transferred back to the image via syncPixels. </font><font size="-1">The returned pointer remains valid until the next getPixel, getConstPixels, or setPixels call and should never be deallocated by the user.</font><font size="-1"></font></td> </tr> <tr> <td> <center><a name="setPixels"></a> <font size="-1">setPixels</font></center> </td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Quantum.html">Quantum</a> *</font></td> <td><font size="-1">const ssize_t x_, const ssize_t y_, const size_t columns_, const size_t rows_</font></td> <td><font size="-1">Allocates a pixel cache region to store image pixels as defined by the region rectangle.  This area is subsequently transferred from the pixel cache to the image via syncPixels. </font><font size="-1">The returned pointer remains valid until the next getPixel, getConstPixels, or setPixels call and should never be deallocated by the user.</font></td> </tr> <tr> <td> <center><a name="syncPixels"></a> <font size="-1">syncPixels</font></center> </td> <td><font size="-1">void</font></td> <td><font size="-1">void</font></td> <td><font size="-1">Transfers the image cache pixels to the image.</font></td> </tr> <tr> <td> <center><a name="readPixels"></a> <font size="-1">readPixels</font></center> </td> <td><font size="-1">void</font></td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Enumerations.html#QuantumTypes">QuantumTypes</a> quantum_, unsigned char *source_,</font></td> <td><font size="-1">Transfers one or more pixel components from a buffer or file into the image pixel cache of an image. ReadPixels is typically used to support image decoders. The region transferred corresponds to the region set by a preceding setPixels call.</font></td> </tr> <tr> <td> <center><a name="writePixels"></a> <font size="-1">writePixels</font></center> </td> <td><font size="-1">void</font></td> <td><font size="-1"><a href="http://www.imagemagick.org/Magick++/Enumerations.html#QuantumTypes">QuantumTypes</a> quantum_, unsigned char *destination_</font></td> <td><font size="-1">Transfers one or more pixel components from the image pixel cache to a buffer or file. WritePixels is typically used to support image encoders. The region transferred corresponds to the region set by a preceding getPixels or getConstPixels call.</font></td> </tr> </tbody> </table> </div> </body> </html>
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