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  6.     <title>11.15.¬† Compose</title>
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  13.     <link rel="up" href="gimp-imagewindow-menus-colors.html" title="11.¬† The ‚ÄúColors‚Äù Menu" />
  14.     <link rel="prev" href="plug-in-colors-channel-mixer.html" title="11.14.¬† Channel Mixer" />
  15.     <link rel="next" href="plug-in-decompose-registered.html" title="11.16.¬† Decompose" />
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  17.   <body>
  18.     <div class="navheader">
  19.       <table width="100%" summary="Navigation header">
  20.         <tr>
  21.           <th colspan="3" align="center">11.15.¬†
  22.     <span lang="en" xml:lang="en">Compose</span>
  23.   </th>
  24.         </tr>
  25.         <tr>
  26.           <td width="20%" align="left"><a accesskey="p" href="plug-in-colors-channel-mixer.html"><img src="../images/prev.png" alt="Prev" /></a>¬†</td>
  27.           <th width="60%" align="center">11.¬†
  28.     <span lang="en" xml:lang="en">The ‚Äú<span class="quote">Colors</span>‚Äù Menu</span>
  29.   </th>
  30.           <td width="20%" align="right">¬†<a accesskey="n" href="plug-in-decompose-registered.html"><img src="../images/next.png" alt="Next" /></a></td>
  31.         </tr>
  32.       </table>
  33.       <hr />
  34.     </div>
  35.     <div class="sect2" lang="en" xml:lang="en">
  36.       <div class="titlepage">
  37.         <div>
  38.           <div>
  39.             <h3 class="title"><a id="plug-in-compose"></a>11.15.¬†
  40.     <span lang="en" xml:lang="en">Compose</span>
  41.   </h3>
  42.           </div>
  43.           <div>
  44.             <div class="revhistory">
  45.               <table border="1" width="100%" summary="Revision history">
  46.                 <tr>
  47.                   <th align="left" valign="top" colspan="3">
  48.                     <b>Revision History</b>
  49.                   </th>
  50.                 </tr>
  51.                 <tr>
  52.                   <td align="left">Revision $Revision: 2409 $</td>
  53.                   <td align="left">2008-03-08</td>
  54.                   <td align="left">ude</td>
  55.                 </tr>
  56.               </table>
  57.             </div>
  58.           </div>
  59.         </div>
  60.       </div>
  61.       <a id="id2719770" class="indexterm"></a>
  62.       <a id="id2719779" class="indexterm"></a>
  63.       <a id="id2719787" class="indexterm"></a>
  64.       <a id="id2719796" class="indexterm"></a>
  65.       <a id="id2719804" class="indexterm"></a>
  66.       <a id="id2719813" class="indexterm"></a>
  67.       <a id="id2719831" class="indexterm"></a>
  68.       <div class="sect3" lang="en" xml:lang="en">
  69.         <div class="titlepage">
  70.           <div>
  71.             <div>
  72.               <h4 class="title"><a id="id2719840"></a>11.15.1.¬†
  73.       <span lang="en" xml:lang="en">Overview</span>
  74.     </h4>
  75.             </div>
  76.           </div>
  77.         </div>
  78.         <div class="figure">
  79.           <a id="id2719851"></a>
  80.           <p class="title">
  81.             <b>Figure¬†15.156.¬†
  82.         <span lang="en" xml:lang="en">
  83.           Example for the ‚Äú<span class="quote">Compose</span>‚Äù command
  84.         </span>
  85.       </b>
  86.           </p>
  87.           <div class="figure-contents">
  88.             <div class="mediaobject">
  89.               <img src="../images/filters/examples/cosmos-decomposed.png" alt="Example for the Compose command" />
  90.               <div class="caption">
  91.                 <p>Decomposed image (RGB decomposition)</p>
  92.               </div>
  93.             </div>
  94.             <div class="mediaobject">
  95.               <img src="../images/filters/examples/cosmos-1.png" alt="Example for the Compose command" />
  96.               <div class="caption">
  97.                 <p>‚Äú<span class="quote">Compose</span>‚Äù applied</p>
  98.               </div>
  99.             </div>
  100.           </div>
  101.         </div>
  102.         <br class="figure-break" />
  103.         <p>
  104.       This command constructs an image from several grayscale images or
  105.       layers, for instance from extracted RGB, HSV... components. You can also
  106.       build an image from grayscale images or layers created independently.
  107.     </p>
  108.       </div>
  109.       <div class="sect3" lang="en" xml:lang="en">
  110.         <div class="titlepage">
  111.           <div>
  112.             <div>
  113.               <h4 class="title"><a id="id2719926"></a>11.15.2.¬†
  114.       <span lang="en" xml:lang="en">Activate the command</span>
  115.     </h4>
  116.             </div>
  117.           </div>
  118.         </div>
  119.         <div class="itemizedlist">
  120.           <ul type="disc">
  121.             <li>
  122.               <p>
  123.           You can find this command in the image window menu under
  124.           <span class="guimenu">Colors</span> ‚Üí <span class="guisubmenu">Components</span> ‚Üí <span class="guimenuitem">Compose‚Ķ</span>.
  125.           It is enabled if your image is grayscale.
  126.         </p>
  127.             </li>
  128.           </ul>
  129.         </div>
  130.       </div>
  131.       <div class="sect3" lang="en" xml:lang="en">
  132.         <div class="titlepage">
  133.           <div>
  134.             <div>
  135.               <h4 class="title"><a id="id2719977"></a>11.15.3.¬†
  136.       <span lang="en" xml:lang="en">Options</span>
  137.     </h4>
  138.             </div>
  139.           </div>
  140.         </div>
  141.         <div class="figure">
  142.           <a id="id2719988"></a>
  143.           <p class="title">
  144.             <b>Figure¬†15.157.¬†
  145.         <span lang="en" xml:lang="en">‚Äú<span class="quote">Compose</span>‚Äù command options</span>
  146.       </b>
  147.           </p>
  148.           <div class="figure-contents">
  149.             <div class="mediaobject">
  150.               <img src="../images/menus/colors-components-compose.png" alt="Compose command options" />
  151.             </div>
  152.           </div>
  153.         </div>
  154.         <br class="figure-break" />
  155.         <div class="variablelist">
  156.           <dl>
  157.             <dt>
  158.               <span class="term">Compose Channels</span>
  159.             </dt>
  160.             <dd>
  161.               <p>
  162.             You can select there the color space to be used: RGB, HSV...
  163.             The options are described in the following
  164.             <a class="link" href="plug-in-decompose-registered.html" title="11.16.¬† Decompose">Decompose</a>
  165.             plug-in.
  166.           </p>
  167.             </dd>
  168.             <dt>
  169.               <span class="term">Channel Representation</span>
  170.             </dt>
  171.             <dd>
  172.               <p>
  173.             Allows you to select which channel will be affected to each image
  174.             channel. You may use this option, for example, to exchange color
  175.             channels:
  176.           </p>
  177.               <div class="figure">
  178.                 <a id="id2720069"></a>
  179.                 <p class="title">
  180.                   <b>Figure¬†15.158.¬†
  181.               <span lang="en" xml:lang="en">
  182.                 Channel Representation example: exchange two channels
  183.               </span>
  184.             </b>
  185.                 </p>
  186.                 <div class="figure-contents">
  187.                   <div class="mediaobject">
  188.                     <img src="../images/menus/compose-channels-ex1.jpg" alt="Channel Representation example: exchange two channels" />
  189.                     <div class="caption">
  190.                       <p>Original image</p>
  191.                     </div>
  192.                   </div>
  193.                   <div class="mediaobject">
  194.                     <img src="../images/menus/compose-channels-ex2.png" alt="Channel Representation example: exchange two channels" />
  195.                     <div class="caption">
  196.                       <p>Decomposed to layers</p>
  197.                     </div>
  198.                   </div>
  199.                   <div class="mediaobject">
  200.                     <img src="../images/menus/compose-channels-ex3.png" alt="Channel Representation example: exchange two channels" />
  201.                     <div class="caption">
  202.                       <p>Applied channel representation</p>
  203.                     </div>
  204.                   </div>
  205.                   <div class="mediaobject">
  206.                     <img src="../images/menus/compose-channels-ex4.jpg" alt="Channel Representation example: exchange two channels" />
  207.                     <div class="caption">
  208.                       <p>Composed image</p>
  209.                     </div>
  210.                   </div>
  211.                 </div>
  212.               </div>
  213.               <br class="figure-break" />
  214.               <p>
  215.             <span class="guilabel">Mask Value</span>: Instead of selecting a layer or
  216.             an image to build the channel, you can give the channel a value
  217.             from 0 to 255. But note that at least one channel must be formed
  218.             from a layer or image.
  219.           </p>
  220.             </dd>
  221.           </dl>
  222.         </div>
  223.         <div class="tip" style="margin-left: 0.5in; margin-right: 0.5in;">
  224.           <table border="0" summary="Tip">
  225.             <tr>
  226.               <td rowspan="2" align="center" valign="top" width="25">
  227.                 <img alt="[Tip]" src="../images/tip.png" />
  228.               </td>
  229.               <th align="left">Tip</th>
  230.             </tr>
  231.             <tr>
  232.               <td align="left" valign="top">
  233.                 <p>
  234.         If Compose options are different from Decompose ones, for
  235.         instance an image decomposed to
  236.         <a class="link" href="glossary.html#glossary-rgb" title="RGB">RGB</a> then re-composed to
  237.         <a class="link" href="glossary.html#glossary-lab" title="L*a*b">LAB</a>, you will get
  238.         interesting color effects. Test it!
  239.       </p>
  240.               </td>
  241.             </tr>
  242.           </table>
  243.         </div>
  244.       </div>
  245.     </div>
  246.     <div class="navfooter">
  247.       <hr />
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  249.         <tr>
  250.           <td width="40%" align="left"><a accesskey="p" href="plug-in-colors-channel-mixer.html"><img src="../images/prev.png" alt="Prev" /></a>¬†</td>
  251.           <td width="20%" align="center">
  252.             <a accesskey="u" href="gimp-imagewindow-menus-colors.html">
  253.               <img src="../images/up.png" alt="Up" />
  254.             </a>
  255.           </td>
  256.           <td width="40%" align="right">¬†<a accesskey="n" href="plug-in-decompose-registered.html"><img src="../images/next.png" alt="Next" /></a></td>
  257.         </tr>
  258.         <tr>
  259.           <td width="40%" align="left" valign="top"><a accesskey="p" href="plug-in-colors-channel-mixer.html">11.14.¬†
  260.     <span lang="en" xml:lang="en">Channel Mixer</span>
  261.   </a>¬†</td>
  262.           <td width="20%" align="center">
  263.             <a accesskey="h" href="index.html">
  264.               <img src="../images/home.png" alt="Home" />
  265.             </a>
  266.           </td>
  267.           <td width="40%" align="right" valign="top">¬†<a accesskey="n" href="plug-in-decompose-registered.html">11.16.¬†
  268.     
  269.     <span lang="en" xml:lang="en">Decompose</span>
  270.   </a></td>
  271.         </tr>
  272.       </table>
  273.     </div>
  274.   </body>
  275. </html>
  276.