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  1. <?xml version="1.0" encoding="UTF-8" standalone="no"?>
  2. <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
  3. <html xmlns="http://www.w3.org/1999/xhtml">
  4.   <head>
  5.     <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
  6.     <title>2.6.┬áSelect By Color Tool</title>
  7.     <link rel="stylesheet" href="gimp-help-plain.css" type="text/css" />
  8.     <link rel="stylesheet" href="gimp-help-screen.css" type="text/css" />
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  10.     <link rel="start" href="index.html" title="GIMP User Manual" />
  11.     <link rel="up" href="ch03s02.html" title="2.┬áSelection Tools" />
  12.     <link rel="prev" href="ch03s02s05.html" title="2.5.┬áFuzzy Selection Tool (Magic Wand)" />
  13.     <link rel="next" href="ch03s02s07.html" title="2.7.┬áScissors Tool" />
  14.   </head>
  15.   <body>
  16.     <div xmlns="" class="navheader">
  17.       <table width="100%" summary="Navigation header">
  18.         <tr>
  19.           <th colspan="3" align="center" id="chaptername">2.┬áSelection Tools</th>
  20.         </tr>
  21.         <tr>
  22.           <td width="20%" align="left"><a accesskey="p" href="ch03s02s05.html">Prev</a>┬á</td>
  23.           <th width="60%" align="center" id="sectionname">2.6.┬áSelect By Color Tool</th>
  24.           <td width="20%" align="right">┬á<a accesskey="n" href="ch03s02s07.html">Next</a></td>
  25.         </tr>
  26.       </table>
  27.       <hr />
  28.     </div>
  29.     <div class="sect2" lang="en" xml:lang="en">
  30.       <div class="titlepage">
  31.         <div>
  32.           <div>
  33.             <h3 class="title"><a id="gimp-tool-by-color-select"></a>2.6.┬áSelect By Color Tool</h3>
  34.           </div>
  35.         </div>
  36.       </div>
  37.       <a id="id3434307" class="indexterm"></a>
  38.       <div class="informalfigure">
  39.         <div class="mediaobject">
  40.           <img src="../images/toolbox/toolbox-selbycolor.png" />
  41.           <div class="caption">
  42.             <p>
  43.           Select by Color tool icon in the Toolbox
  44.         </p>
  45.           </div>
  46.         </div>
  47.       </div>
  48.       <p>
  49.     The Select by Color tool is designed to select areas of an image
  50.     based on color similarity.  It works a lot like the Fuzzy Select
  51.     tool ("Magic Wand").  The main difference between them is that the
  52.     Magic Wand selects <span class="emphasis"><em>contiguous</em></span> regions, with
  53.     all parts connected to the starting point by paths containing no
  54.     large gaps; while the Select by Color tool selects all pixels that
  55.     are sufficiently similar in color to the pixel you click on,
  56.     regardless of where they are located.  Also, clicking and dragging
  57.     in the image has no effect on the Select by Color tool.
  58.   </p>
  59.       <div class="simplesect" lang="en" xml:lang="en">
  60.         <div class="titlepage">
  61.           <div>
  62.             <div>
  63.               <h4 class="title"><a id="id3434369"></a>How to Activate</h4>
  64.             </div>
  65.           </div>
  66.         </div>
  67.         <p>
  68.       The Magic Wand Tool can be activated from an image
  69.       menu as
  70.       <span class="guimenu">Tools</span>-><span class="guisubmenu">Selection Tools</span>-><span class="guimenuitem">Select by Color</span>; 
  71.       from the Toolbox by clicking on the tool icon 
  72.       <span class="guiicon">
  73.         <span class="inlinemediaobject"><img src="../images/toolbox/selbycolor.png" /></span>
  74.       </span>;
  75.       or from the keyboard using the shortcut <span><b class="keycap">O</b></span> (note
  76.       that this is a capitalized letter O, not the number 0).  
  77.     </p>
  78.       </div>
  79.       <div class="simplesect" lang="en" xml:lang="en">
  80.         <div class="titlepage">
  81.           <div>
  82.             <div>
  83.               <h4 class="title"><a id="id3434427"></a>Key modifiers (Defaults)</h4>
  84.             </div>
  85.           </div>
  86.         </div>
  87.         <p>
  88.       The select by color tool does not have any special key modifiers,
  89.       only the ones that affect all selection tools in the same way.
  90.       See <a href="ch03s02.html#gimp-tool-select" title="2.1.┬áCommon Features">Selection Tools</a> for
  91.       help with these.
  92.     </p>
  93.       </div>
  94.       <div class="simplesect" lang="en" xml:lang="en">
  95.         <div class="titlepage">
  96.           <div>
  97.             <div>
  98.               <h4 class="title"><a id="id3434449"></a>Options</h4>
  99.             </div>
  100.           </div>
  101.         </div>
  102.         <div class="informalfigure">
  103.           <div class="mediaobject">
  104.             <img src="../images/toolbox/tool-options-selbycolor.png" />
  105.             <div class="caption">
  106.               <p>
  107.             Tool Options for the Select by Color tool
  108.           </p>
  109.             </div>
  110.           </div>
  111.         </div>
  112.         <div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
  113.           <table border="0" summary="Note">
  114.             <tr>
  115.               <td rowspan="2" align="center" valign="top" width="25">
  116.                 <img alt="[Note]" src="../images/note.png" />
  117.               </td>
  118.               <th align="left">Note</th>
  119.             </tr>
  120.             <tr>
  121.               <td colspan="2" align="left" valign="top">
  122.                 <p>
  123.         See <a href="ch03s02.html#gimp-tool-select" title="2.1.┬áCommon Features">Selection Tools</a> for
  124.         help with options that are common to all these tools.  Only
  125.         options that are specific to the Select by Color tool are
  126.         explained here.  Note that they are the same options as the
  127.         Magic Wand tool has.
  128.       </p>
  129.               </td>
  130.             </tr>
  131.           </table>
  132.         </div>
  133.         <div class="variablelist">
  134.           <dl>
  135.             <dt>
  136.               <span class="term">Finding Similar Colors</span>
  137.             </dt>
  138.             <dd>
  139.               <p>
  140.             These options affect the way the Magic Wand expands the
  141.             selection out from the initial point.
  142.           </p>
  143.               <div class="itemizedlist">
  144.                 <ul type="disc">
  145.                   <li>
  146.                     <p><b>Select Transparent Areas.┬á</b>
  147.                   This option gives the Magic Wand the ability to select
  148.                   areas that are completely transparent. If this option
  149.                   is not checked, transparent areas will never be
  150.                   included in the selection.
  151.                 </p>
  152.                   </li>
  153.                   <li>
  154.                     <p><b>Sample Merged.┬á</b>
  155.                   This option becomes relevant when you have several
  156.                   layers in your image, and the active layer is either
  157.                   semi-transparent or is set to another Layer Mode than
  158.                   Normal. If this is the case, the colors present in the
  159.                   layer will be different from the colors in the
  160.                   composite image. If the "Sample Merged" option is
  161.                   unchecked, the wand will only react to the color in
  162.                   the active layer when it creates a selection. If it is
  163.                   checked it will react to the composite color of all
  164.                   visible layers. For further information, see the
  165.                   glossary entry <a href="go01.html#glossary-samplemerge">Sample Merged</a>.  
  166.                 </p>
  167.                   </li>
  168.                   <li>
  169.                     <p><b>Threshold.┬á</b>
  170.                   This slider determines the range of colors that will
  171.                   be selected:  the higher the threshold, the larger the
  172.                   resulting selection. 
  173.                 </p>
  174.                   </li>
  175.                 </ul>
  176.               </div>
  177.             </dd>
  178.           </dl>
  179.         </div>
  180.       </div>
  181.     </div>
  182.     <div class="navfooter">
  183.       <hr />
  184.       <table width="100%" summary="Navigation footer">
  185.         <tr>
  186.           <td width="40%" align="left"><a accesskey="p" href="ch03s02s05.html">Prev</a>┬á</td>
  187.           <td width="20%" align="center">
  188.             <a accesskey="u" href="ch03s02.html">Up</a>
  189.           </td>
  190.           <td width="40%" align="right">┬á<a accesskey="n" href="ch03s02s07.html">Next</a></td>
  191.         </tr>
  192.         <tr>
  193.           <td width="40%" align="left" valign="top">2.5.┬áFuzzy Selection Tool (Magic Wand)┬á</td>
  194.           <td width="20%" align="center">
  195.             <a accesskey="h" href="index.html">Home</a>
  196.           </td>
  197.           <td width="40%" align="right" valign="top">┬á2.7.┬áScissors Tool</td>
  198.         </tr>
  199.       </table>
  200.     </div>
  201.   </body>
  202. </html>
  203.