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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>5.2.┬áEdge</title>
  7.     <link rel="stylesheet" href="gimp-help-plain.css" type="text/css" />
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  9.     <meta name="generator" content="DocBook XSL Stylesheets V1.64.1" />
  10.     <link rel="home" href="index.html" title="GIMP User Manual" />
  11.     <link rel="up" href="ch05s05.html" title="5.┬áEdge-detect filters" />
  12.     <link rel="previous" href="ch05s05.html" title="5.┬áEdge-detect filters" />
  13.     <link rel="next" href="ch05s05s03.html" title="5.3.┬áLaplace" />
  14.   </head>
  15.   <body>
  16.     <div class="navheader">
  17.       <table width="100%" summary="Navigation header">
  18.         <tr>
  19.           <th colspan="3" align="center">5.2.┬áEdge</th>
  20.         </tr>
  21.         <tr>
  22.           <td width="20%" align="left"><a accesskey="p" href="ch05s05.html">Prev</a>┬á</td>
  23.           <th width="60%" align="center">5.┬áEdge-detect filters</th>
  24.           <td width="20%" align="right">┬á<a accesskey="n" href="ch05s05s03.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="plug-in-edge"></a>5.2.┬áEdge</h3>
  34.           </div>
  35.         </div>
  36.         <div></div>
  37.       </div>
  38.       <a id="id2974693" class="indexterm"></a>
  39.       <div class="mediaobject">
  40.         <img src="../images/filters/filters-edgedetect-edge.png" />
  41.       </div>
  42.       <div class="simplesect" lang="en" xml:lang="en">
  43.         <div class="titlepage">
  44.           <div>
  45.             <div>
  46.               <h4 class="title"><a id="id2974714"></a>Overview</h4>
  47.             </div>
  48.           </div>
  49.           <div></div>
  50.         </div>
  51.         <p>
  52.       This filter is found in 
  53.       <span class="guimenuitem">Image>/Filters/Edge-Detect/<span class="accel">E</span>dge</span>
  54.     </p>
  55.       </div>
  56.       <div class="simplesect" lang="en" xml:lang="en">
  57.         <div class="titlepage">
  58.           <div>
  59.             <div>
  60.               <h4 class="title"><a id="id2974737"></a>Options</h4>
  61.             </div>
  62.           </div>
  63.           <div></div>
  64.         </div>
  65.         <div class="variablelist">
  66.           <dl>
  67.             <dt>
  68.               <span class="term">Algorithm</span>
  69.             </dt>
  70.             <dd>
  71.               <p>
  72.             </p>
  73.               <div class="itemizedlist">
  74.                 <p>
  75.                 <span class="guilabel">Sobel</span>: Here, this method has no options and so is less
  76.                 interesting than the specific Sobel.
  77.               </p>
  78.                 <p>
  79.                 <span class="guilabel">Prewitt</span>: Result doesn't look different from Sobel.
  80.               </p>
  81.                 <p>
  82.                 <span class="guilabel">Gradient</span>: Edges are thiner, less contrasted and more 
  83.                 blurred than Sobel.
  84.               </p>
  85.                 <p>
  86.                 <span class="guilabel">Roberts</span>: No evident difference from Sobel.
  87.               </p>
  88.                 <p>
  89.                 <span class="guilabel">Differential</span>: Edges less bright.
  90.               </p>
  91.                 <p>
  92.                 <span class="guilabel">Laplace</span>: Less interesting than the specific one.
  93.               </p>
  94.                 <ul type="disc"></ul>
  95.               </div>
  96.               <p>
  97.           </p>
  98.             </dd>
  99.             <dt>
  100.               <span class="term">Parameters Settings</span>
  101.             </dt>
  102.             <dd>
  103.               <p>
  104.             <span class="guilabel">Amount</span>: 
  105.             a low value results in black, high-contrasted image with thin edges. A high value 
  106.             results in thick edges with low contrast and many colors in dark areas.
  107.           </p>
  108.               <p>
  109.             <span class="guilabel">Wrap, Smear, Black</span>:
  110.             is the Wrapmode like "Displace" plug-in. It's useful for tilable image.
  111.           </p>
  112.             </dd>
  113.           </dl>
  114.         </div>
  115.       </div>
  116.     </div>
  117.     <div class="navfooter">
  118.       <hr />
  119.       <table width="100%" summary="Navigation footer">
  120.         <tr>
  121.           <td width="40%" align="left"><a accesskey="p" href="ch05s05.html">Prev</a>┬á</td>
  122.           <td width="20%" align="center">
  123.             <a accesskey="u" href="ch05s05.html">Up</a>
  124.           </td>
  125.           <td width="40%" align="right">┬á<a accesskey="n" href="ch05s05s03.html">Next</a></td>
  126.         </tr>
  127.         <tr>
  128.           <td width="40%" align="left" valign="top">5.┬áEdge-detect filters┬á</td>
  129.           <td width="20%" align="center">
  130.             <a accesskey="h" href="index.html">Home</a>
  131.           </td>
  132.           <td width="40%" align="right" valign="top">┬á5.3.┬áLaplace</td>
  133.         </tr>
  134.       </table>
  135.     </div>
  136.   </body>
  137. </html>
  138.