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  <title>ImageMagick: MagickCore, C API for ImageMagick: Transform an Image</title>
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<td id="main" valign="top">
<p class="navigation-index">[ <a href="#Chop">Chop</a> | <a href="#CropImage">CropImage</a> | <a href="#FlattenImage">FlattenImage</a> | <a href="#FlipImage">FlipImage</a> | <a href="#FlopImage">FlopImage</a> | <a href="#MosaicImages">MosaicImages</a> | <a href="#RollImage">RollImage</a> | <a href="#ShaveImage">ShaveImage</a> | <a href="#SpliceImage">SpliceImage</a> | <a href="#TransformImage">TransformImage</a> | <a href="#TransformImages">TransformImages</a> | <a href="#TrimImage">TrimImage</a> ]</p>

<p>Chop() removes a region of an image and collapses the image to occupy the removed portion.</p>

<p>The format of the ChopImage method is:</p>

<pre class="code">
  Image *ChopImage(const Image *image,const RectangleInfo *chop_info)
    ExceptionInfo *exception)
</pre>

<p>A description of each parameter follows:</p>

<h4>image</h4>
<p>The image.</p>

<h4>chop_info</h4>
<p>Define the region of the image to chop.</p>

<h4>exception</h4>
<p>Return any errors or warnings in this structure.</p>

<div style="margin: auto;">
  <h2><a name="CropImage">CropImage</a></h2>
</div>

<p>CropImage() extracts a region of the image starting at the offset defined by geometry.</p>

<p>The format of the CropImage method is:</p>

<pre class="code">
  Image *CropImage(const Image *image,const RectangleInfo *geometry,
    ExceptionInfo *exception)
</pre>

<p>A description of each parameter follows:</p>

<h4>image</h4>
<p>The image.</p>

<h4>geometry</h4>
<p>Define the region of the image to crop with members x, y, width, and height.</p>

<h4>exception</h4>
<p>Return any errors or warnings in this structure.</p>

<div style="margin: auto;">
  <h2><a name="FlattenImage">FlattenImage</a></h2>
</div>

<p>FlattenImage() composites all images from the current image pointer to the end of the image list and returns a single flattened image.</p>

<p>The format of the FlattenImage method is:</p>

<pre class="code">
  Image *FlattenImage(Image *image,ExceptionInfo *exception)
</pre>

<p>A description of each parameter follows:</p>

<h4>image</h4>
<p>The image sequence.</p>

<h4>exception</h4>
<p>Return any errors or warnings in this structure.</p>

<div style="margin: auto;">
  <h2><a name="FlipImage">FlipImage</a></h2>
</div>

<p>FlipImage() creates a vertical mirror image by reflecting the pixels around the central x-axis.</p>

<p>The format of the FlipImage method is:</p>

<pre class="code">
  Image *FlipImage(const Image *image,ExceptionInfo *exception)
</pre>

<p>A description of each parameter follows:</p>

<h4>image</h4>
<p>The image.</p>

<h4>exception</h4>
<p>Return any errors or warnings in this structure.</p>

<div style="margin: auto;">
  <h2><a name="FlopImage">FlopImage</a></h2>
</div>

<p>FlopImage() creates a horizontal mirror image by reflecting the pixels around the central y-axis.</p>

<p>The format of the FlopImage method is:</p>

<pre class="code">
  Image *FlopImage(const Image *image,ExceptionInfo *exception)
</pre>

<p>A description of each parameter follows:</p>

<h4>image</h4>
<p>The image.</p>

<h4>exception</h4>
<p>Return any errors or warnings in this structure.</p>

<div style="margin: auto;">
  <h2><a name="MosaicImages">MosaicImages</a></h2>
</div>

<p>MosaicImages() inlays an image sequence to form a single coherent picture. It returns a single image with each image in the sequence composited at the location defined by the page member of the image structure.</p>

<p>The format of the MosaicImage method is:</p>

<pre class="code">
  Image *MosaicImages(const Image *image,ExceptionInfo *exception)
</pre>

<p>A description of each parameter follows:</p>

<h4>image</h4>
<p>The image.</p>

<h4>exception</h4>
<p>Return any errors or warnings in this structure.</p>

<div style="margin: auto;">
  <h2><a name="RollImage">RollImage</a></h2>
</div>

<p>RollImage() offsets an image as defined by x_offset and y_offset.</p>

<p>The format of the RollImage method is:</p>

<pre class="code">
  Image *RollImage(const Image *image,const long x_offset,
    const long y_offset,ExceptionInfo *exception)
</pre>

<p>A description of each parameter follows:</p>

<h4>image</h4>
<p>The image.</p>

<h4>x_offset</h4>
<p>The number of columns to roll in the horizontal direction.</p>

<h4>y_offset</h4>
<p>The number of rows to roll in the vertical direction.</p>

<h4>exception</h4>
<p>Return any errors or warnings in this structure.</p>

<div style="margin: auto;">
  <h2><a name="ShaveImage">ShaveImage</a></h2>
</div>

<p>ShaveImage() shaves pixels from the image edges.  It allocates the memory necessary for the new Image structure and returns a pointer to the new image.</p>

<p>The format of the ShaveImage method is:</p>

<pre class="code">
  Image *ShaveImage(const Image *image,const RectangleInfo *shave_info,
    ExceptionInfo *exception)
</pre>

<p>A description of each parameter follows:</p>

<h4>shave_image</h4>
<p>Method ShaveImage returns a pointer to the shaved image.  A null image is returned if there is a memory shortage or if the image width or height is zero.</p>

<h4>image</h4>
<p>The image.</p>

<h4>shave_info</h4>
<p>Specifies a pointer to a RectangleInfo which defines the region of the image to crop.</p>

<h4>exception</h4>
<p>Return any errors or warnings in this structure.</p>

<div style="margin: auto;">
  <h2><a name="SpliceImage">SpliceImage</a></h2>
</div>

<p>SpliceImage() splices a solid color into the image as defined by the geometry.</p>

<p>The format of the SpliceImage method is:</p>

<pre class="code">
  Image *SpliceImage(const Image *image,const RectangleInfo *geometry,
    ExceptionInfo *exception)
</pre>

<p>A description of each parameter follows:</p>

<h4>image</h4>
<p>The image.</p>

<h4>geometry</h4>
<p>Define the region of the image to splice with members x, y, width, and height.</p>

<h4>exception</h4>
<p>Return any errors or warnings in this structure.</p>

<div style="margin: auto;">
  <h2><a name="TransformImage">TransformImage</a></h2>
</div>

<p>TransformImage() is a convenience method that behaves like ResizeImage() or CropImage() but accepts scaling and/or cropping information as a region geometry specification.  If the operation fails, the original image handle is returned.</p>

<p>The format of the TransformImage method is:</p>

<pre class="code">
  MagickBooleanType TransformImage(Image **image,const char *crop_geometry,
    const char *image_geometry)
</pre>

<p>A description of each parameter follows:</p>

<h4>image</h4>
<p>The image The transformed image is returned as this parameter.</p>

<h4>crop_geometry</h4>
<p>A crop geometry string.  This geometry defines a subregion of the image to crop.</p>

<h4>image_geometry</h4>
<p>An image geometry string.  This geometry defines the final size of the image.</p>

<div style="margin: auto;">
  <h2><a name="TransformImages">TransformImages</a></h2>
</div>

<p>TransformImages() calls TransformImage() on each image of a sequence.</p>

<p>The format of the TransformImage method is:</p>

<pre class="code">
  MagickBooleanType TransformImages(Image **image,
    const char *crop_geometry,const char *image_geometry)
</pre>

<p>A description of each parameter follows:</p>

<h4>image</h4>
<p>The image The transformed image is returned as this parameter.</p>

<h4>crop_geometry</h4>
<p>A crop geometry string.  This geometry defines a subregion of the image to crop.</p>

<h4>image_geometry</h4>
<p>An image geometry string.  This geometry defines the final size of the image.</p>

<div style="margin: auto;">
  <h2><a name="TrimImage">TrimImage</a></h2>
</div>

<p>TrimImage() trims pixels from the image edges.  It allocates the memory necessary for the new Image structure and returns a pointer to the new image.</p>

<p>The format of the TrimImage method is:</p>

<pre class="code">
  Image *TrimImage(const Image *image,ExceptionInfo *exception)
</pre>

<p>A description of each parameter follows:</p>

<h4>image</h4>
<p>The image.</p>

<h4>exception</h4>
<p>Return any errors or warnings in this structure.</p>

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