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<div class="document" id="graphicsmagick-tools">
<h1 class="title">GraphicsMagick Tools</h1>
<div class="contents local topic" id="contents">
<ul class="simple">
<li><a class="reference internal" href="#animate-animate-a-sequence-of-images" id="id2">Animate: animate a sequence of images</a></li>
<li><a class="reference internal" href="#compare-compare-two-images-using-statistics-and-or-visual-differencing" id="id3">Compare: compare two images using statistics and/or visual differencing</a></li>
<li><a class="reference internal" href="#composite-composite-images-together" id="id4">Composite: composite images together</a></li>
<li><a class="reference internal" href="#conjure-execute-a-magick-scripting-language-msl-xml-script" id="id5">Conjure: execute a Magick Scripting Language (MSL) XML script</a></li>
<li><a class="reference internal" href="#convert-convert-an-image-or-sequence-of-images" id="id6">Convert: convert an image or sequence of images</a></li>
<li><a class="reference internal" href="#display-display-an-image-on-a-workstation-running-x" id="id7">Display: display an image on a workstation running X</a></li>
<li><a class="reference internal" href="#identify-describe-an-image-or-image-sequence" id="id8">Identify: describe an image or image sequence</a></li>
<li><a class="reference internal" href="#import-capture-an-application-or-x-server-screen" id="id9">Import: capture an application or X server screen</a></li>
<li><a class="reference internal" href="#mogrify-transform-an-image-or-sequence-of-images" id="id10">Mogrify: transform an image or sequence of images</a></li>
<li><a class="reference internal" href="#montage-create-a-composite-image-in-a-grid-from-separate-images" id="id11">Montage: create a composite image (in a grid) from separate images</a></li>
</ul>
</div>
<div class="section" id="animate-animate-a-sequence-of-images">
<h1><a class="toc-backref" href="#id2">Animate: animate a sequence of images</a></h1>
<p><a class="reference external" href="animate.html">Animate</a> displays a sequence of images or an animation on any display
running an X server.</p>
</div>
<div class="section" id="compare-compare-two-images-using-statistics-and-or-visual-differencing">
<h1><a class="toc-backref" href="#id3">Compare: compare two images using statistics and/or visual differencing</a></h1>
<p><a class="reference external" href="compare.html">Compare</a> compares two images using either a specified standard
statistical metric (MAE, MSE, PAE, PSNR, RMSE), or a specified visual
differencing method (assign, threshold, tint, xor). The statistical
comparison produces a textual display of metric values while the visual
differencing method writes a difference image with the differences
annotated using the specified algorithm. For example:</p>
<pre class="literal-block">
% gm convert input.jpg -blur 0x1.5 output.jpg
% gm compare -metric MSE input.jpg output.jpg
Image Difference (MeanSquaredError):
Normalized Absolute
============ ==========
Red: 0.0014374614 94.2
Green: 0.0014396270 94.3
Blue: 0.0014464548 94.8
Total: 0.0014411811 94.4
</pre>
</div>
<div class="section" id="composite-composite-images-together">
<h1><a class="toc-backref" href="#id4">Composite: composite images together</a></h1>
<p><a class="reference external" href="composite.html">Composite</a> blends and merges images to create new images.</p>
</div>
<div class="section" id="conjure-execute-a-magick-scripting-language-msl-xml-script">
<h1><a class="toc-backref" href="#id5">Conjure: execute a Magick Scripting Language (MSL) XML script</a></h1>
<p><a class="reference external" href="conjure.html">Conjure</a> interprets and executes scripts in the Magick Scripting Language
(MSL). The interpreter is called conjure and here is an example script:</p>
<pre class="literal-block">
<?xml version="1.0" encoding="UTF-8"?>
<image size="400x400" >
<read filename="image.gif" />
<get width="base-width" height="base-height" />
<resize geometry="%[dimensions]" />
<get width="width" height="height" />
<print output=
"Image sized from %[base-width]x%[base-height]
to %[width]x%[height].\n" />
<write filename="image.png" />
</image>
</pre>
<p>which is invoked like</p>
<pre class="literal-block">
conjure -dimensions 400x400 incantation.msl
</pre>
<p>All operations closely follow the key/value pairs defined in the
<a class="reference external" href="perl.html">PerlMagick</a> documentation, unless otherwise noted.</p>
</div>
<div class="section" id="convert-convert-an-image-or-sequence-of-images">
<h1><a class="toc-backref" href="#id6">Convert: convert an image or sequence of images</a></h1>
<p><a class="reference external" href="convert.html">Convert</a> converts an input file using one image format to an output file
with using any of the supported writeable image formats. A large number
of image processing operations may be performed on the image before it is
written. By default, the input image format is determined by its magic
number. To specify a particular image format, precede the filename with
an image format name and a colon (i.e. ps:image) or specify the image
type as the filename suffix (i.e. image.ps). Specify file as - for
standard input or output. If file has the extension .Z, the file is
decoded with uncompress. For example:</p>
<pre class="literal-block">
% gm convert input.jpg -rotate 90 rotated.tiff
</pre>
</div>
<div class="section" id="display-display-an-image-on-a-workstation-running-x">
<h1><a class="toc-backref" href="#id7">Display: display an image on a workstation running X</a></h1>
<p><a class="reference external" href="display.html">Display</a> is a machine architecture independent image processing and
display program. It can display an image on any workstation display
running an X server. The image can be displayed as background image of
any window.</p>
</div>
<div class="section" id="identify-describe-an-image-or-image-sequence">
<h1><a class="toc-backref" href="#id8">Identify: describe an image or image sequence</a></h1>
<p><a class="reference external" href="identify.html">Identify</a> describes the format and characteristics of one or more image
files. It will also report if an image is incomplete or corrupt. The
information displayed includes the scene number, the file name, the width
and height of the image, whether the image is colormapped or not, the
number of colors in the image, the number of bytes in the image, the
format of the image (JPEG, PNM, etc.), and finally the number of seconds
it took to read and process the image. For example:</p>
<pre class="literal-block">
% gm identify tiger-1200-rgb16.tiff
tiger-1200-rgb16.tiff TIFF 9083x9450+0+0 DirectClass 16-bit 491.2M 0.000u 0:01
</pre>
</div>
<div class="section" id="import-capture-an-application-or-x-server-screen">
<h1><a class="toc-backref" href="#id9">Import: capture an application or X server screen</a></h1>
<p><a class="reference external" href="import.html">Import</a> reads an image from any visible window on an X server and outputs
it as an image file. You can capture a single window, the entire screen,
or any rectangular portion of the screen.</p>
<p>The target window can be specified by id, name, or may be selected by
clicking the mouse in the desired window. If you press a button and then
drag, a rectangle will form which expands and contracts as the mouse
moves. To save the portion of the screen defined by the rectangle, just
release the button. The keyboard bell is rung once at the beginning of
the screen capture and twice when it completes. For example:</p>
<pre class="literal-block">
% gm import capture.tiff
</pre>
</div>
<div class="section" id="mogrify-transform-an-image-or-sequence-of-images">
<h1><a class="toc-backref" href="#id10">Mogrify: transform an image or sequence of images</a></h1>
<p><a class="reference external" href="mogrify.html">Mogrify</a> transforms an image or a sequence of images "in place". These
transforms include image scaling, image rotation, color reduction, and
others. The transmogrified image overwrites the original image. <a class="reference external" href="mogrify.html">Mogrify</a>
is very similar to <a class="reference external" href="convert.html">Convert</a> except that it can operate on many images at
once, and overwrites the input files by default. However, <a class="reference external" href="mogrify.html">Mogrify</a> may
also be used to convert file formats, and send modified files to another
directory. For example, the following reads several JPEG files and writes
a rotated version of them in TIFF format:</p>
<pre class="literal-block">
% gm mogrify -rotate 90 -format tiff image1.jpg image2.jpg image3.jpg
</pre>
</div>
<div class="section" id="montage-create-a-composite-image-in-a-grid-from-separate-images">
<h1><a class="toc-backref" href="#id11">Montage: create a composite image (in a grid) from separate images</a></h1>
<p><a class="reference external" href="montage.html">Montage</a> creates a composite by combining several separate images. The
images are tiled on a composite image with the name of the image and its
properties optionally appearing just below the individual tile.</p>
<p>Copyright © GraphicsMagick Group 2002 - 2010</p>
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