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+<h1>PerlMagick API</h1>
<p class="navigation-index">[<a href="#installation">Installation</a> • <a href="#overview">Overview</a> • <a href="#example">Example Script</a> • <a href="#read">Read or Write an Image</a> • <a href="#manipulate">Manipulate an Image</a> • <a href="#set-attribute">Set an Image Attribute</a> • <a href="#get-attribute">Get an Image Attribute</a> • <a href="#compare">Compare an Image to its Reconstruction</a> • <a href="#montage">Create an Image Montage</a> • <a href="#blobs">Working with Blobs</a> • <a href="#direct-access">Direct-access to Image Pixels</a> • <a href="#miscellaneous">Miscellaneous Methods</a> • <a href="#exceptions">Handling Exceptions</a>• <a href="#constants">Constant</a> ]</p>
<div class="doc-section">
-<a name="introduction"></a>
+<a id="introduction"></a>
<p><a href="../www/download.html">PerlMagick</a> is an objected-oriented <a href="http://www.perl.com/perl/">Perl</a> interface to ImageMagick. Use the module to read, manipulate, or write an image or image sequence from within a Perl script. This makes it very suitable for Web CGI scripts. You must have ImageMagick 6.5.5 or above and Perl version 5.005_02 or greater installed on your system for PerlMagick to build properly.</p>
<p>There are a number of useful scripts available to show you the value of PerlMagick. You can do Web based image manipulation and conversion with <a href="http://www.imagemagick.org/download/perl">MagickStudio</a>, or use <a href="https://www.imagemagick.org/subversion/ImageMagick/trunk/PerlMagick/demo/">L-systems</a> to create images of plants using mathematical constructs, and finally navigate through collections of thumbnail images and select the image to view with the <a href="http://webmagick.sourceforge.net/">WebMagick Image Navigator</a>.</p>
<p>You can try PerlMagick from your Web browser at the <a href="http://www.imagemagick.org/MagickStudio/scripts/MagickStudio.cgi">ImageMagick Studio</a>. Or, you can see <a href="../www/examples.html">examples</a> of select PerlMagick functions.</p>
</div>
-<h2><a name="installation"></a>Installation</h2>
+<h2><a id="installation"></a>Installation</h2>
<div class="doc-section">
<p><b>UNIX</b></p>
<p>ImageMagick must already be installed on your system. Next, get
the <a href="../www/download.html">PerlMagick</a> distribution corresponding to the installed ImageMagick distribution
-(e.g., PerlMagick 6.65 for
-ImageMagick 6.6.5) and unpack it as shown below:</p>
+(e.g., PerlMagick 6.70 for
+ImageMagick 6.7.0) and unpack it as shown below:</p>
-<p class='crt'><span class="crtprompt"> $magick> </span><span class='crtin'>tar xvfz PerlMagick-6.65.tar.gz</span><span class='crtout'></span><span class="crtprompt"> $magick> </span><span class='crtin'>cd PerlMagick</span></p>
+<p class='crt'><span class="crtprompt"> $magick> </span><span class='crtin'>tar xvfz PerlMagick-6.70.tar.gz</span><span class='crtout'></span><span class="crtprompt"> $magick> </span><span class='crtin'>cd PerlMagick</span></p>
<p>Next, edit <kbd>Makefile.PL</kbd> and change LIBS and INC to include the appropriate path information to the required <kbd>MagickCore</kbd> library. You may need paths to JPEG, PNG, TIFF, etc. delegates if they were included with your installed version of ImageMagick. Build and install it like this:</p>
<p class='crt'><span class="crtprompt"> $magick> </span><span class='crtin'>perl Makefile.PL</span><span class='crtout'></span><span class="crtprompt"> $magick> </span><span class='crtin'>make</span><span class='crtout'></span><span class="crtprompt"> $magick> </span><span class='crtin'>make install</span></p>
</div>
-<h2><a name="overview"></a>Overview</h2>
+<h2><a id="overview"></a>Overview</h2>
<div class="doc-section">
<p>Any script that wants to use PerlMagick methods must first define the methods within its namespace and instantiate an image object. Do this with:</p>
<p class='crt'><span class="crtprompt"> $magick> </span><span class='crtin'>$ENV{PATH}='/../bin:/usr/bin:/usr/local/bin';</span></p>
<div style="margin: auto;">
-<h2><a name="example"></a>Example Script</h2>
+<h2><a id="example"></a>Example Script</h2>
</div>
<p>Here is an example script to get you started:</p>
<pre class="code">
$image = Image::Magick->new;
$image->Set(size=>'100x100');
- $image->ReadImage('xc:white');
+ $image->ReadImage('canvas:white');
$image->Set('pixel[49,49]'=>'red');
</pre>
</pre>
<div style="margin: auto;">
- <h2><a name="read"></a>Read or Write an Image</h2>
+ <h2><a id="read"></a>Read or Write an Image</h2>
</div>
<p>Use the methods listed below to either read, write, or display an image or image sequence:</p>
</div>
-<h2><a name="manipulate"></a>Manipulate an Image</h2>
+<h2><a id="manipulate"></a>Manipulate an Image</h2>
<div class="doc-section">
<p>Once you create an image with, for example, method ReadImage() you may want to operate on it. Below is a list of all the image manipulations methods available to you with PerlMagick. There are <a href="../www/examples.html">examples</a> of select PerlMagick methods. Here is an example call to an image manipulation method:</p>
<tr>
<td valign="top">Distort</td>
- <td valign="top">points=><i>array of float values</i>, method=>{Affine, AffineProjection, Bilinear, Perspective, ScaleRotateTranslate}, virtual-pixel=>{Background Black Constant Dither Edge Gray Mirror Random Tile Transparent White}, best-fit=>{True, False}</td>
+ <td valign="top">points=><i>array of float values</i>, method=>{Affine, AffineProjection, Bilinear, Perspective, Resize, ScaleRotateTranslate}, virtual-pixel=>{Background Black Constant Dither Edge Gray Mirror Random Tile Transparent White}, best-fit=>{True, False}</td>
<td valign="top">distort image</td>
</tr>
<tr>
<td valign="top">MedianFilter</td>
- <td valign="top">radius=><i>double</i></td>
+ <td valign="top">geometry=><i>geometry</i>, width=><i>integer</i>, height=><i>integer</i>, channel=>{All, Default, Alpha, Black, Blue, CMYK, Cyan, Gray, Green, Index, Magenta, Opacity, Red, RGB, Yellow}</td>
<td valign="top">replace each pixel with the median intensity pixel of a neighborhood.</td>
</tr>
<td valign="top">half the size of an image</td>
</tr>
+ <tr>
+ <td valign="top">Mode</td>
+ <td valign="top">geometry=><i>geometry</i>, width=><i>integer</i>, height=><i>integer</i>, channel=>{All, Default, Alpha, Black, Blue, CMYK, Cyan, Gray, Green, Index, Magenta, Opacity, Red, RGB, Yellow}</td>
+ <td valign="top">make each pixel the <em>predominate color</em> of the neighborhood.</td>
+ </tr>
+
<tr>
<td valign="top">Modulate</td>
- <td valign="top">brightness=><i>double</i>, saturation=><i>double</i>, hue=><i>double</i>, lightness=><i>double</i>, whiteness=><i>double</i>, blackness=><i>double</i> </td>
+ <td valign="top">factor=><i>geometry</i>, brightness=><i>double</i>, saturation=><i>double</i>, hue=><i>double</i>, lightness=><i>double</i>, whiteness=><i>double</i>, blackness=><i>double</i> </td>
<td valign="top">vary the brightness, saturation, and hue of an image by the specified percentage</td>
</tr>
<tr>
<td valign="top">ReduceNoise</td>
- <td valign="top">radius=><i>double</i></td>
+ <td valign="top">geometry=><i>geometry</i>, width=><i>integer</i>, height=><i>integer</i>, channel=>{All, Default, Alpha, Black, Blue, CMYK, Cyan, Gray, Green, Index, Magenta, Opacity, Red, RGB, Yellow}</td>
<td valign="top">reduce noise in the image with a noise peak elimination filter</td>
</tr>
<td valign="top">displace image pixels by a random amount</td>
</tr>
+ <tr>
+ <td valign="top">Statistic</td>
+ <td valign="top">geometry=><i>geometry</i>, width=><i>integer</i>, height=><i>integer</i>, channel=>{All, Default, Alpha, Black, Blue, CMYK, Cyan, Gray, Green, Index, Magenta, Opacity, Red, RGB, Yellow}, type=>{Median, Mode, Mean, Maximum, Minimum, ReduceNoise}</td>
+ <td valign="top">replace each pixel with corresponding statistic from the neighborhood.</td>
+ </tr>
<tr>
<td valign="top">Stegano</td>
<td valign="top">image=><i>image-handle</i>, offset=><i>integer</i></td>
</div>
-<h2><a name="set-attribute"></a>Set an Image Attribute</h2>
+<h2><a id="set-attribute"></a>Set an Image Attribute</h2>
<div class="doc-section">
<p>Use method Set() to set an image attribute. For example,</p>
</div>
-<h2><a name="get-attribute"></a>Get an Image Attribute</h2>
+<h2><a id="get-attribute"></a>Get an Image Attribute</h2>
<div class="doc-section">
<p>Use method Get() to get an image attribute. For example,</p>
</div>
-<h2><a name="compare"></a>Compare an Image to its Reconstruction</h2>
+<h2><a id="compare"></a>Compare an Image to its Reconstruction</h2>
<div class="doc-section">
</div>
<p>In addition to the reported root mean squared error of around 0.024, a difference image is displayed so you can visually identify the difference between the images.</p>
-<h2><a name="montage"></a>Create an Image Montage</h2>
+<h2><a id="montage"></a>Create an Image Montage</h2>
<div class="doc-section">
<p>Use method Montage() to create a composite image by combining several separate images. The images are tiled on the composite image with the name of the image optionally appearing just below the individual tile. For example,</p>
</div>
-<h2><a name="blobs"></a>Working with Blobs</h2>
+<h2><a id="blobs"></a>Working with Blobs</h2>
<div class="doc-section">
<p>A blob contains data that directly represent a particular image
</div>
-<h2><a name="direct-access"></a>Direct-access to Image Pixels</h2>
+<h2><a id="direct-access"></a>Direct-access to Image Pixels</h2>
<div class="doc-section">
<p>Use these methods to obtain direct access to the image pixels:</p>
</div>
-<h2><a name="miscellaneous"></a>Miscellaneous Methods</h2>
+<h2><a id="miscellaneous"></a>Miscellaneous Methods</h2>
<div class="doc-section">
<p>The Append() method append a set of images. For example,</p>
$image->RemoteCommand('image.jpg');
</pre>
+<p>The Smush() method smushes a set of images together. For example,</p>
+
+<pre class="code">
+ $p = $image->Smush(stack=>{true,false},offset=><em>integer</em>);
+</pre>
+
+<p>smushes together all the images associated with object <kbd>$image</kbd>. By default, images are smushed left-to-right. Set <kbd>stack</kbd> to True to smushed them top-to-bottom.</p>
+
<p>Statistics() returns the image statistics for each channel in the image. The returned values are an array of depth, minima, maxima, mean, standard deviation, kurtosis, and skewness values in RGB, CMYK, RGBA, or CMYKA order (depending on the image type).</p>
<pre class="code">
</div>
-<h2><a name="exceptions"></a>Handling Exceptions</h2>
+<h2><a id="exceptions"></a>Handling Exceptions</h2>
<div class="doc-section">
<p>All PerlMagick methods return an undefined string context upon success. If any problems occur, the error is returned as a string with an embedded numeric status code. A status code less than 400 is a warning. This means that the operation did not complete but was recoverable to some degree. A numeric code greater or equal to 400 is an error and indicates the operation failed completely. Here is how exceptions are returned for the different methods:</p>
</div>
-<h2><a name="constants"></a>Constants</h2>
+<h2><a id="constants"></a>Constants</h2>
<div class="doc-section">
<p>PerlMagick includes these constants:</p>
<span id="linkbar-east"> </span>\r
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- <span id="footer-west">© 1999-2010 ImageMagick Studio LLC</span>\r
+ <span id="footer-west">© 1999-2011 ImageMagick Studio LLC</span>\r
<span id="footer-east"> <a href="http://www.imagemagick.org/script/contact.php">Contact the Wizards</a></span>\r
</div>\r
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projects / imagemagick / blobdiff