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<p class="text-center"><a href="composite.php#usage">Example Usage</a> • <a href="composite.php#options">Option Summary</a></p>
<p class="lead magick-description">Use the <code>composite</code> program to overlap one image over another. See <a href="command-line-processing.php">Command Line Processing</a> for advice on how to structure your <code>composite</code> command or see below for example usages of the command.</p>
<h2 class="magick-header"><a id="usage"></a>Example Usage</h2>
<p>We list a few examples of the <code>composite</code> command here to illustrate its usefulness and ease of use. To get started, lets overlay a smiley face over a rose:</p>
<pre>
composite -gravity center smile.gif rose: rose-over.png
</pre>
<ul>
<a href="../image/smile.gif"><img src="../image/smile.gif" width="48" height="48" alt="smile" /></a>
<img src="../image/over.gif" width="56" height="46" alt="over" />
<a href="../image/rose.jpg"><img src="../image/rose.jpg" width="70" height="46" alt="rose" /></a>
<img style="margin-top:13px; margin-bottom:13px;" src="../image/right.gif" width="20" height="20" alt="==>" />
<a href="../image/rose-over.png"><img src="../image/rose-over.png" width="70" height="46" alt="rose" /></a>
</ul>
<p>You can create three-dimensional effect with the <var>Atop</var>:</p>
<pre>
convert -size 70x70 canvas:none -fill red -draw 'circle 35,35 10,30' red-circle.png
convert -size 70x70 canvas:none -draw 'circle 35,35 35,20' -negate \
-channel A -gaussian-blur 0x8 white-highlight.png
composite -compose atop -geometry -13-17 white-highlight.png red-circle.png red-ball.png
</pre>
<ul>
<a href="../image/white-highlight.png"><img src="../image/white-highlight.png" width="70" height="70" alt="white highlight" /></a>
<img src="../image/atop.gif" width="56" height="70" alt="atop" />
<a href="../image/red-circle.png"><img src="../image/red-circle.png" width="70" height="70" alt="red circle" /></a>
<img style="margin-top:25px; margin-bottom:25px;" src="../image/right.gif" width="20" height="20" alt="==>" />
<a href="../image/red-ball.png"><img src="../image/red-ball.png" width="70" height="70" alt="red ball" /></a>
</ul>
<p>You can find additional examples of using <code>composite</code> in <a href="http://www.imagemagick.org/Usage/">Examples of ImageMagick Usage</a>. You can find out more about them and the mathematics by looking at <a href="http://www.w3.org/TR/SVG12/rendering.html">SVG Alpha Compositing</a></p>
<h2 class="magick-header"><a id="options"></a>Option Summary</h2>
<p>The <code>composite</code> command recognizes these options. Click on an option to get more details about how that option works.</p>
<table class="table table-condensed table-striped">
<tbody>
<tr>
<th align="left">Option</th>
<th align="left">Description</th>
</tr>
<tr>
<td><a href="command-line-options.php#affine">-affine <var>matrix</var></a></td>
<td>affine transform matrix</td>
</tr>
<tr>
<td><a href="command-line-options.php#alpha">-alpha</a></td>
<td>on, activate, off, deactivate, set, opaque, copy",
transparent, extract, background, or shape the alpha channel</td>
</tr>
<tr>
<td><a href="command-line-options.php#authenticate">-authenticate <var>value</var></a></td>
<td>decrypt image with this password</td>
</tr>
<tr>
<td><a href="command-line-options.php#blend">-blend <var>geometry</var></a></td>
<td>blend images</td>
</tr>
<tr>
<td><a href="command-line-options.php#blue-primary">-blue-primary <var>point</var></a></td>
<td>chromaticity blue primary point</td>
</tr>
<tr>
<td><a href="command-line-options.php#border">-border <var>geometry</var></a></td>
<td>surround image with a border of color</td>
</tr>
<tr>
<td><a href="command-line-options.php#bordercolor">-bordercolor <var>color</var></a></td>
<td>border color</td>
</tr>
<tr>
<td><a href="command-line-options.php#channel">-channel <var>type</var></a></td>
<td>apply option to select image channels</td>
</tr>
<tr>
<td><a href="command-line-options.php#colors">-colors <var>value</var></a></td>
<td>preferred number of colors in the image</td>
</tr>
<tr>
<td><a href="command-line-options.php#colorspace">-colorspace <var>type</var></a></td>
<td>set image colorspace</td>
</tr>
<tr>
<td><a href="command-line-options.php#comment">-comment <var>string</var></a></td>
<td>annotate image with comment</td>
</tr>
<tr>
<td><a href="command-line-options.php#compose">-compose <var>operator</var></a></td>
<td>set image composite operator</td>
</tr>
<tr>
<td><a href="command-line-options.php#compress">-compress <var>type</var></a></td>
<td>image compression type</td>
</tr>
<tr>
<td><a href="command-line-options.php#debug">-debug <var>events</var></a></td>
<td>display copious debugging information</td>
</tr>
<tr>
<td><a href="command-line-options.php#decipher">-decipher <var>filename</var></a></td>
<td>convert cipher pixels to plain</td>
</tr>
<tr>
<td><a href="command-line-options.php#define">-define <var>format:option</var></a></td>
<td>define one or more image format options</td>
</tr>
<tr>
<td><a href="command-line-options.php#density">-density <var>geometry</var></a></td>
<td>horizontal and vertical density of the image</td>
</tr>
<tr>
<td><a href="command-line-options.php#depth">-depth <var>value</var></a></td>
<td>image depth</td>
</tr>
<tr>
<td><a href="command-line-options.php#displace">-displace <var>geometry</var></a></td>
<td>shift image pixels defined by a displacement map</td>
</tr>
<tr>
<td><a href="command-line-options.php#dissolve">-dissolve <var>value</var></a></td>
<td>dissolve the two images a given percent</td>
</tr>
<tr>
<td><a href="command-line-options.php#dither">-dither <var>method</var></a></td>
<td>apply error diffusion to image</td>
</tr>
<tr>
<td><a href="command-line-options.php#encipher">-encipher <var>filename</var></a></td>
<td>convert plain pixels to cipher pixels</td>
</tr>
<tr>
<td><a href="command-line-options.php#encoding">-encoding <var>type</var></a></td>
<td>text encoding type</td>
</tr>
<tr>
<td><a href="command-line-options.php#endian">-endian <var>type</var></a></td>
<td>endianness (MSB or LSB) of the image</td>
</tr>
<tr>
<td><a href="command-line-options.php#extract">-extract <var>geometry</var></a></td>
<td>extract area from image</td>
</tr>
<tr>
<td><a href="command-line-options.php#filter">-filter <var>type</var></a></td>
<td>use this filter when resizing an image</td>
</tr>
<tr>
<td><a href="command-line-options.php#font">-font <var>name</var></a></td>
<td>render text with this font</td>
</tr>
<tr>
<td><a href="command-line-options.php#geometry">-geometry <var>geometry</var></a></td>
<td>preferred size or location of the image</td>
</tr>
<tr>
<td><a href="command-line-options.php#gravity">-gravity <var>type</var></a></td>
<td>horizontal and vertical text placement</td>
</tr>
<tr>
<td><a href="command-line-options.php#green-primary">-green-primary <var>point</var></a></td>
<td>chromaticity green primary point</td>
</tr>
<tr>
<td><a href="command-line-options.php#help">-help</a></td>
<td>print program options</td>
</tr>
<tr>
<td><a href="command-line-options.php#identify">-identify</a></td>
<td>identify the format and characteristics of the image</td>
</tr>
<tr>
<td><a href="command-line-options.php#interlace">-interlace <var>type</var></a></td>
<td>type of image interlacing scheme</td>
</tr>
<tr>
<td><a href="command-line-options.php#interpolate">-interpolate <var>method</var></a></td>
<td>pixel color interpolation method</td>
</tr>
<tr>
<td><a href="command-line-options.php#label">-label <var>string</var></a></td>
<td>assign a label to an image</td>
</tr>
<tr>
<td><a href="command-line-options.php#level">-level <var>value</var></a></td>
<td>adjust the level of image contrast</td>
</tr>
<tr>
<td><a href="command-line-options.php#limit">-limit <var>type value</var></a></td>
<td>pixel cache resource limit</td>
</tr>
<tr>
<td><a href="command-line-options.php#log">-log <var>format</var></a></td>
<td>format of debugging information</td>
</tr>
<tr>
<td><a href="command-line-options.php#monitor">-monitor</a></td>
<td>monitor progress</td>
</tr>
<tr>
<td><a href="command-line-options.php#monochrome">-monochrome</a></td>
<td>transform image to black and white</td>
</tr>
<tr>
<td><a href="command-line-options.php#negate">-negate</a></td>
<td>replace each pixel with its complementary color </td>
</tr>
<tr>
<td><a href="command-line-options.php#page">-page <var>geometry</var></a></td>
<td>size and location of an image canvas (setting)</td>
</tr>
<tr>
<td><a href="command-line-options.php#pointsize">-pointsize <var>value</var></a></td>
<td>font point size</td>
</tr>
<tr>
<td><a href="command-line-options.php#profile">-profile <var>filename</var></a></td>
<td>add, delete, or apply an image profile</td>
</tr>
<tr>
<td><a href="command-line-options.php#quality">-quality <var>value</var></a></td>
<td>JPEG/MIFF/PNG compression level</td>
</tr>
<tr>
<td><a href="command-line-options.php#quantize">-quantize <var>colorspace</var></a></td>
<td>reduce image colors in this colorspace</td>
</tr>
<tr>
<td><a href="command-line-options.php#quiet">-quiet</a></td>
<td>suppress all warning messages</td>
</tr>
<tr>
<td><a href="command-line-options.php#red-primary">-red-primary <var>point</var></a></td>
<td>chromaticity red primary point</td>
</tr>
<tr>
<td><a href="command-line-options.php#regard-warnings">-regard-warnings</a></td>
<td>pay attention to warning messages.</td>
</tr>
<tr>
<td><a href="command-line-options.php#respect-parentheses">-respect-parentheses</a></td>
<td>settings remain in effect until parenthesis boundary.</td>
</tr>
<tr>
<td><a href="command-line-options.php#rotate">-rotate <var>degrees</var></a></td>
<td>apply Paeth rotation to the image</td>
</tr>
<tr>
<td><a href="command-line-options.php#sampling-factor">-sampling-factor <var>geometry</var></a></td>
<td>horizontal and vertical sampling factor</td>
</tr>
<tr>
<td><a href="command-line-options.php#scene">-scene <var>value</var></a></td>
<td>image scene number</td>
</tr>
<tr>
<td><a href="command-line-options.php#seed">-seed <var>value</var></a></td>
<td>seed a new sequence of pseudo-random numbers</td>
</tr>
<tr>
<td><a href="command-line-options.php#set">-set <var>attribute value</var></a></td>
<td>set an image attribute</td>
</tr>
<tr>
<td><a href="command-line-options.php#sharpen">-sharpen <var>geometry</var></a></td>
<td>sharpen the image</td>
</tr>
<tr>
<td><a href="command-line-options.php#shave">-shave <var>geometry</var></a></td>
<td>shave pixels from the image edges</td>
</tr>
<tr>
<td><a href="command-line-options.php#size">-size <var>geometry</var></a></td>
<td>width and height of image</td>
</tr>
<tr>
<td><a href="command-line-options.php#stegano">-stegano <var>offset</var></a></td>
<td>hide watermark within an image</td>
</tr>
<tr>
<td><a href="command-line-options.php#stereo">-stereo <var>geometry</var></a></td>
<td>combine two image to create a stereo anaglyph</td>
</tr>
<tr>
<td><a href="command-line-options.php#strip">-strip</a></td>
<td>strip image of all profiles and comments</td>
</tr>
<tr>
<td><a href="command-line-options.php#swap">-swap <var>indexes</var></a></td>
<td>swap two images in the image sequence</td>
</tr>
<tr>
<td><a href="command-line-options.php#synchronize">-synchronize</a></td>
<td>synchronize image to storage device</td>
</tr>
<tr>
<td><a href="command-line-options.php#taint">-taint</a></td>
<td>mark the image as modified</td>
</tr>
<tr>
<td><a href="command-line-options.php#thumbnail">-thumbnail <var>geometry</var></a></td>
<td>create a thumbnail of the image</td>
</tr>
<tr>
<td><a href="command-line-options.php#tile">-tile</a></td>
<td>repeat composite operation across and down image</td>
</tr>
<tr>
<td><a href="command-line-options.php#transform">-transform</a></td>
<td>affine transform image</td>
</tr>
<tr>
<td><a href="command-line-options.php#transparent-color">-transparent-color <var>color</var></a></td>
<td>transparent color</td>
</tr>
<tr>
<td><a href="command-line-options.php#treedepth">-treedepth <var>value</var></a></td>
<td>color tree depth</td>
</tr>
<tr>
<td><a href="command-line-options.php#type">-type <var>type</var></a></td>
<td>image type</td>
</tr>
<tr>
<td><a href="command-line-options.php#units">-units <var>type</var></a></td>
<td>the units of image resolution</td>
</tr>
<tr>
<td><a href="command-line-options.php#unsharp">-unsharp <var>geometry</var></a></td>
<td>sharpen the image</td>
</tr>
<tr>
<td><a href="command-line-options.php#verbose">-verbose</a></td>
<td>print detailed information about the image</td>
</tr>
<tr>
<td><a href="command-line-options.php#version">-version</a></td>
<td>print version information</td>
</tr>
<tr>
<td><a href="command-line-options.php#virtual-pixel">-virtual-pixel <var>method</var></a></td>
<td>access method for pixels outside the boundaries of the image</td>
</tr>
<tr>
<td><a href="command-line-options.php#watermark">-watermark <var>geometry</var></a></td>
<td>percent brightness and saturation of a watermark</td>
</tr>
<tr>
<td><a href="command-line-options.php#white-point">-white-point <var>point</var></a></td>
<td>chromaticity white point</td>
</tr>
<tr>
<td><a href="command-line-options.php#white-threshold">-white-threshold <var>value</var></a></td>
<td>force all pixels above the threshold into white</td>
</tr>
<tr>
<td><a href="command-line-options.php#write">-write <var>filename</var></a></td>
<td>write images to this file</td>
</tr>
</tbody>
</table>
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