Gitiles
Code Review Sign In
gerrit-public.fairphone.software / platform / external / ImageMagick / 417eeb10a37f4a75077f5b72a6d3af769a665552 / . / www / composite.html
blob: aed7c740f7f6c90deb2fdef198924273125c9f79 [file] [log] [blame]
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="-//W3C//DTD XHTML 1.1//EN" xml:lang="en" xsi:schemaLocation="http://www.w3.org/1999/xhtml http://www.w3.org/MarkUp/SCHEMA/xhtml11.xsd">
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8"></meta>
<meta name="google-site-verification" content="_bMOCDpkx9ZAzBwb2kF3PRHbfUUdFj2uO8Jd1AXArz4"></meta>
<title>ImageMagick: Command-line Tools: Composite</title>
<meta http-equiv="content-language" content="en-US"></meta>
<meta http-equiv="content-type" content="text/html; charset=utf-8"></meta>
<meta http-equiv="reply-to" content="magick-users@imagemagick.org"></meta>
<meta name="application-name" content="ImageMagick"></meta>
<meta name="description" content="Use ImageMagick to convert, edit, or compose bitmap images in a variety of formats. In addition, resize, rotate, shear, distort or transform images automagically."></meta>
<meta name="application-url" content="http://www.imagemagick.org"></meta>
<meta name="generator" content="PHP"></meta>
<meta name="keywords" content="command-line, tools:, composite, ImageMagick, PerlMagick, image processing, OpenMP, software development library, image, photo, software, Magick++, MagickWand"></meta>
<meta name="rating" content="GENERAL"></meta>
<meta name="robots" content="INDEX, FOLLOW"></meta>
<meta name="generator" content="ImageMagick Studio LLC"></meta>
<meta name="author" content="ImageMagick Studio LLC"></meta>
<meta name="revisit-after" content="2 DAYS"></meta>
<meta name="resource-type" content="document"></meta>
<meta name="copyright" content="Copyright (c) 1999-2012 ImageMagick Studio LLC"></meta>
<meta name="distribution" content="Global"></meta>
<link rel="icon" href="../images/wand.png"></link>
<link rel="shortcut icon" href="../images/wand.ico" type="images/x-icon"></link>
<link rel="canonical" href="http://www.imagemagick.org"></link>
<link rel="meta" type="application/rdf+xml" title="ICI" href="http://imagemagick.org/ici.rdf"></link>
<!-- Add jQuery library -->
<script type="text/javascript" src="http://localhost/ajax/libs/jquery/1.7/jquery.min.js"></script>
<!-- Add mousewheel plugin (this is optional) -->
<script type="text/javascript" src="http://www.imagemagick.org/fancybox/lib/jquery.mousewheel-3.0.6.pack.js"></script>
<!-- Add fancyBox -->
<link rel="stylesheet" href="http://www.imagemagick.org/fancybox/source/jquery.fancybox.css?v=2.0.6" type="text/css" media="screen"></link>
<script type="text/javascript" src="http://www.imagemagick.org/fancybox/source/jquery.fancybox.pack.js?v=2.0.6"></script>
<!-- Optionally add helpers - button, thumbnail and/or media -->
<link rel="stylesheet" href="http://www.imagemagick.org/fancybox/source/helpers/jquery.fancybox-buttons.css?v=1.0.2" type="text/css" media="screen"></link>
<script type="text/javascript" src="http://www.imagemagick.org/fancybox/source/helpers/jquery.fancybox-buttons.js?v=1.0.2"></script>
<script type="text/javascript" src="http://www.imagemagick.org/fancybox/source/helpers/jquery.fancybox-media.js?v=1.0.0"></script>
<link rel="stylesheet" href="http://www.imagemagick.org/fancybox/source/helpers/jquery.fancybox-thumbs.css?v=2.0.6" type="text/css" media="screen"></link>
<script type="text/javascript" src="http://www.imagemagick.org/fancybox/source/helpers/jquery.fancybox-thumbs.js?v=2.0.6"></script>
<script type="text/javascript">
$(document).ready(function() {
$(".fancybox").fancybox();
});
</script>
<!-- ImageMagick style -->
<style type="text/css" media="all">
@import url("../www/magick.css");
</style>
</head>
<body id="www-imagemagick-org">
<div class="titlebar">
<div style="margin: 17px auto; float: left;">
<script type="text/javascript">
<!--
google_ad_client = "pub-3129977114552745";
google_ad_slot = "5439289906";
google_ad_width = 728;
google_ad_height = 90;
//-->
</script>
</div>
<a href="http://www.imagemagick.org/discourse-server/">
<img src="../images/logo.jpg" alt="ImageMagick Logo" style="width: 123px; height: 118px; border: 0px; float: right;"></img></a>
<a href="../index.html">
<img src="../images/sprite.jpg" alt="ImageMagick Sprite" style="width: 114px; height: 118px; border: 0px; float: right;"></img></a>
</div>
<div class="westbar">
<div class="menu">
<a title="About ImageMagick" href="../index.html">About ImageMagick</a>
</div>
<div class="menu">
<a title="Binary Releases" href="binary-releases.html">Binary Releases</a>
</div>
<div class="sub">
<a title="Binary Release: Unix" href="binary-releases.html#unix">Unix</a>
</div>
<div class="sub">
<a title="Binary Release: MacOS X" href="binary-releases.html#macosx">Mac OS X</a>
</div>
<div class="sub">
<a title="Binary Release: iOS" href="binary-releases.html#iOS">iOS</a>
</div>
<div class="sub">
<a title="Binary Release: Windows" href="binary-releases.html#windows">Windows</a>
</div>
<div class="sep"></div>
<div class="menu">
<a title="Command-line Tools" href="command-line-tools.html">Command-line Tools</a>
</div>
<div class="sub">
<a title="Command-line Tools: Processing" href="command-line-processing.html">Processing</a>
</div>
<div class="sub">
<a title="Command-line Tools: Options" href="command-line-options.html">Options</a>
</div>
<div class="sub">
<a title="Command-line Tools: Usage" href="http://www.imagemagick.org/Usage/">Usage</a>
</div>
<div class="menu">
<a title="Program Interfaces" href="api.html">Program Interfaces</a>
</div>
<div class="sub">
<a title="Program Interface: MagickWand" href="magick-wand.html">MagickWand</a>
</div>
<div class="sub">
<a title="Program Interface: MagickCore" href="magick-core.html">MagickCore</a>
</div>
<div class="sub">
<a title="Program Interface: PerlMagick" href="perl-magick.html">PerlMagick</a>
</div>
<div class="sub">
<a title="Program Interface: Magick++" href="magick++.html">Magick++</a>
</div>
<div class="sep"></div>
<div class="menu">
<a title="Install from Source" href="install-source.html">Install from Source</a>
</div>
<div class="sub">
<a title="Install from Source: Unix" href="install-source.html#unix">Unix</a>
</div>
<div class="sub">
<a title="Install from Source: Windows" href="install-source.html#windows">Windows</a>
</div>
<div class="menu">
<a title="Resources" href="resources.html">Resources</a>
</div>
<div class="menu">
<a title="Architecture" href="architecture.html">Architecture</a>
</div>
<div class="menu">
<a title="Download" href="download.html">Download</a>
</div>
<div class="sep"></div>
<div class="menu">
<a title="Search" href="search.html">Search</a>
</div>
<div class="sep"></div>
<div class="menu">
<a title="Site Map" href="sitemap.html">Site Map</a>
</div>
<div class="sub">
<a title="Site Map: Links" href="links.html">Links</a>
</div>
<div class="sep"></div>
<div class="menu">
<a title="Support ImageMagick Development" href="support.html">Support ImageMagick Development</a>
</div>
</div>
<div class="eastbar">
<div> <a class="FlattrButton" style="display:none;" rev="flattr;button:compact;" href="http://www.imagemagick.org/"></a></div>
<noscript>
<a href="http://flattr.com/thing/947300/Convert-Edit-And-Compose-Images" target="_blank">
<img src="http://api.flattr.com/button/flattr-badge-large.png" alt="Flattr this" title="Flattr this" width="93" height="20" border="0"></img></a>
</noscript>
</div>
<div class="main">
<h1>ImageMagick Composite Command-line Tool</h1>
<p class="navigation-index">[<a href="composite.html#usage">Example Usage</a> • <a href="composite.html#options">Option Summary</a>]</p>
<div class="doc-section">
<p>Use the <code>composite</code> program to overlap one image over another. See <a href="command-line-processing.html">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>
</div>
<h2><a id="usage"></a>Example Usage</h2>
<div class="doc-section">
<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>
<p class="crt"><span class="crtprompt"> $ </span><span class="crtin">composite -gravity center smile.gif rose: rose-over.png</span></p>
<div class="image">
<ul>
<a href="../images/smile.gif"><img src="../images/smile.gif" width="48" height="48" alt="smile"></img></a>
<img src="../images/over.gif" width="56" height="46" alt="over"></img>
<a href="../images/rose.jpg"><img src="../images/rose.jpg" width="70" height="46" alt="rose"></img></a>
<img style="margin-top:13px; margin-bottom:13px;" src="../images/right.gif" width="20" height="20" alt="==&gt;"></img>
<a href="../images/rose-over.png"><img src="../images/rose-over.png" width="70" height="46" alt="rose"></img></a>
</ul>
</div>
<p>You can create three-dimensional effect with the <em>Atop</em>:</p>
<p class="crt"><span class="crtprompt"> $ </span><span class="crtin">convert -size 70x70 canvas:none -fill red -draw 'circle 35,35 10,30' red-circle.png</span><span class="crtout"></span><span class="crtprompt"> $ </span><span class="crtin">convert -size 70x70 canvas:none -draw 'circle 35,35 35,20' -negate \ <br></br>
-channel A -gaussian-blur 0x8 white-highlight.png</span><span class="crtout"></span><span class="crtprompt"> $ </span><span class="crtin">composite -compose atop -geometry -13-17 white-highlight.png red-circle.png red-ball.png</span></p>
<div class="image">
<ul>
<a href="../images/white-highlight.png"><img src="../images/white-highlight.png" width="70" height="70" alt="white highlight"></img></a>
<img src="../images/atop.gif" width="56" height="70" alt="atop"></img>
<a href="../images/red-circle.png"><img src="../images/red-circle.png" width="70" height="70" alt="red circle"></img></a>
<img style="margin-top:25px; margin-bottom:25px;" src="../images/right.gif" width="20" height="20" alt="==&gt;"></img>
<a href="../images/red-ball.png"><img src="../images/red-ball.png" width="70" height="70" alt="red ball"></img></a>
</ul>
</div>
<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>
</div>
<h2><a id="options"></a>Option Summary</h2>
<div class="doc-section">
<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="doc">
<tbody>
<tr>
<th align="left">Option</th>
<th align="left">Description</th>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#affine">-affine <em class="option">matrix</em></a></td>
<td valign="top">affine transform matrix</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#alpha">-alpha</a></td>
<td valign="top">on, activate, off, deactivate, set, opaque, copy",
transparent, extract, background, or shape the alpha channel</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#authenticate">-authenticate <em class="option">value</em></a></td>
<td valign="top">decrypt image with this password</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#blend">-blend <em class="option">geometry</em></a></td>
<td valign="top">blend images</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#blue-primary">-blue-primary <em class="option">point</em></a></td>
<td valign="top">chromaticity blue primary point</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#border">-border <em class="option">geometry</em></a></td>
<td valign="top">surround image with a border of color</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#bordercolor">-bordercolor <em class="option">color</em></a></td>
<td valign="top">border color</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#channel">-channel <em class="option">type</em></a></td>
<td valign="top">apply option to select image channels</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#colors">-colors <em class="option">value</em></a></td>
<td valign="top">preferred number of colors in the image</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#colorspace">-colorspace <em class="option">type</em></a></td>
<td valign="top">set image colorspace</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#comment">-comment <em class="option">string</em></a></td>
<td valign="top">annotate image with comment</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#compose">-compose <em class="option">operator</em></a></td>
<td valign="top">set image composite operator</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#compress">-compress <em class="option">type</em></a></td>
<td valign="top">image compression type</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#debug">-debug <em class="option">events</em></a></td>
<td valign="top">display copious debugging information</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#decipher">-decipher <em class="option">filename</em></a></td>
<td valign="top">convert cipher pixels to plain</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#define">-define <em class="option">format:option</em></a></td>
<td valign="top">define one or more image format options</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#density">-density <em class="option">geometry</em></a></td>
<td valign="top">horizontal and vertical density of the image</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#depth">-depth <em class="option">value</em></a></td>
<td valign="top">image depth</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#displace">-displace <em class="option">geometry</em></a></td>
<td valign="top">shift image pixels defined by a displacement map</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#dissolve">-dissolve <em class="option">value</em></a></td>
<td valign="top">dissolve the two images a given percent</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#dither">-dither <em class="option">method</em></a></td>
<td valign="top">apply error diffusion to image</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#encipher">-encipher <em class="option">filename</em></a></td>
<td valign="top">convert plain pixels to cipher pixels</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#encoding">-encoding <em class="option">type</em></a></td>
<td valign="top">text encoding type</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#endian">-endian <em class="option">type</em></a></td>
<td valign="top">endianness (MSB or LSB) of the image</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#extract">-extract <em class="option">geometry</em></a></td>
<td valign="top">extract area from image</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#filter">-filter <em class="option">type</em></a></td>
<td valign="top">use this filter when resizing an image</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#font">-font <em class="option">name</em></a></td>
<td valign="top">render text with this font</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#geometry">-geometry <em class="option">geometry</em></a></td>
<td valign="top">preferred size or location of the image</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#gravity">-gravity <em class="option">type</em></a></td>
<td valign="top">horizontal and vertical text placement</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#green-primary">-green-primary <em class="option">point</em></a></td>
<td valign="top">chromaticity green primary point</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#help">-help</a></td>
<td valign="top">print program options</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#identify">-identify</a></td>
<td valign="top">identify the format and characteristics of the image</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#interlace">-interlace <em class="option">type</em></a></td>
<td valign="top">type of image interlacing scheme</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#interpolate">-interpolate <em class="option">method</em></a></td>
<td valign="top">pixel color interpolation method</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#label">-label <em class="option">string</em></a></td>
<td valign="top">assign a label to an image</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#level">-level <em class="option">value</em></a></td>
<td valign="top">adjust the level of image contrast</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#limit">-limit <em class="option">type value</em></a></td>
<td valign="top">pixel cache resource limit</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#log">-log <em class="option">format</em></a></td>
<td valign="top">format of debugging information</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#monitor">-monitor</a></td>
<td valign="top">monitor progress</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#monochrome">-monochrome</a></td>
<td valign="top">transform image to black and white</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#negate">-negate</a></td>
<td valign="top">replace each pixel with its complementary color </td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#page">-page <em class="option">geometry</em></a></td>
<td valign="top">size and location of an image canvas (setting)</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#pointsize">-pointsize <em class="option">value</em></a></td>
<td valign="top">font point size</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#profile">-profile <em class="option">filename</em></a></td>
<td valign="top">add, delete, or apply an image profile</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#quality">-quality <em class="option">value</em></a></td>
<td valign="top">JPEG/MIFF/PNG compression level</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#quantize">-quantize <em class="option">colorspace</em></a></td>
<td valign="top">reduce image colors in this colorspace</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#quiet">-quiet</a></td>
<td valign="top">suppress all warning messages</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#red-primary">-red-primary <em class="option">point</em></a></td>
<td valign="top">chromaticity red primary point</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#regard-warnings">-regard-warnings</a></td>
<td valign="top">pay attention to warning messages.</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#respect-parentheses">-respect-parentheses</a></td>
<td valign="top">settings remain in effect until parenthesis boundary.</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#rotate">-rotate <em class="option">degrees</em></a></td>
<td valign="top">apply Paeth rotation to the image</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#sampling-factor">-sampling-factor <em class="option">geometry</em></a></td>
<td valign="top">horizontal and vertical sampling factor</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#scene">-scene <em class="option">value</em></a></td>
<td valign="top">image scene number</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#seed">-seed <em class="option">value</em></a></td>
<td valign="top">seed a new sequence of pseudo-random numbers</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#set">-set <em class="option">attribute value</em></a></td>
<td valign="top">set an image attribute</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#sharpen">-sharpen <em class="option">geometry</em></a></td>
<td valign="top">sharpen the image</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#shave">-shave <em class="option">geometry</em></a></td>
<td valign="top">shave pixels from the image edges</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#size">-size <em class="option">geometry</em></a></td>
<td valign="top">width and height of image</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#stegano">-stegano <em>offset</em></a></td>
<td valign="top">hide watermark within an image</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#stereo">-stereo <em class="option">geometry</em></a></td>
<td valign="top">combine two image to create a stereo anaglyph</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#strip">-strip</a></td>
<td valign="top">strip image of all profiles and comments</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#swap">-swap <em class="option">indexes</em></a></td>
<td valign="top">swap two images in the image sequence</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#synchronize">-synchronize</a></td>
<td valign="top">synchronize image to storage device</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#taint">-taint</a></td>
<td valign="top">mark the image as modified</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#thumbnail">-thumbnail <em class="option">geometry</em></a></td>
<td valign="top">create a thumbnail of the image</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#tile">-tile</a></td>
<td valign="top">repeat composite operation across and down image</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#transform">-transform</a></td>
<td valign="top">affine transform image</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#transparent-color">-transparent-color <em class="option">color</em></a></td>
<td valign="top">transparent color</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#treedepth">-treedepth <em class="option">value</em></a></td>
<td valign="top">color tree depth</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#type">-type <em class="option">type</em></a></td>
<td valign="top">image type</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#units">-units <em class="option">type</em></a></td>
<td valign="top">the units of image resolution</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#unsharp">-unsharp <em class="option">geometry</em></a></td>
<td valign="top">sharpen the image</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#verbose">-verbose</a></td>
<td valign="top">print detailed information about the image</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#version">-version</a></td>
<td valign="top">print version information</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#virtual-pixel">-virtual-pixel <em class="option">method</em></a></td>
<td valign="top">access method for pixels outside the boundaries of the image</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#watermark">-watermark <em class="option">geometry</em></a></td>
<td valign="top">percent brightness and saturation of a watermark</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#white-point">-white-point <em class="option">point</em></a></td>
<td valign="top">chromaticity white point</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#white-threshold">-white-threshold <em class="option">value</em></a></td>
<td valign="top">force all pixels above the threshold into white</td>
</tr>
<tr>
<td valign="top"><a href="command-line-options.html#write">-write <em class="option">filename</em></a></td>
<td valign="top">write images to this file</td>
</tr>
</tbody>
</table>
</div>
</div>
<div id="linkbar">
<span id="linkbar-west"> </span>
<span id="linkbar-center">
<a href="http://www.imagemagick.org/discourse-server/">Discourse Server</a> •
<a href="http://www.imagemagick.org/MagickStudio/scripts/MagickStudio.cgi">Studio</a> •
<a href="http://jqmagick.imagemagick.org/">JqMagick</a>
</span>
<span id="linkbar-east"> </span>
</div>
<div class="footer">
<span id="footer-west">© 1999-2013 ImageMagick Studio LLC</span>
<span id="footer-east"> <a href="contact.html">Contact the Wizards</a></span>
</div>
<div style="clear: both; margin: 0; width: 100%; "></div>
</body>
</html>