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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>3.20.┬áSemi-Flatten</title>
  7.     <link rel="stylesheet" href="gimp-help-plain.css" type="text/css" />
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  10.     <link rel="home" href="index.html" title="GIMP User Manual" />
  11.     <link rel="up" href="ch05s03.html" title="3.┬áColor filters" />
  12.     <link rel="previous" href="ch05s03s19.html" title="3.19.┬áMax RGB" />
  13.     <link rel="next" href="ch05s03s21.html" title="3.21.┬áSmooth Palette" />
  14.   </head>
  15.   <body>
  16.     <div class="navheader">
  17.       <table width="100%" summary="Navigation header">
  18.         <tr>
  19.           <th colspan="3" align="center">3.20.┬áSemi-Flatten</th>
  20.         </tr>
  21.         <tr>
  22.           <td width="20%" align="left"><a accesskey="p" href="ch05s03s19.html">Prev</a>┬á</td>
  23.           <th width="60%" align="center">3.┬áColor filters</th>
  24.           <td width="20%" align="right">┬á<a accesskey="n" href="ch05s03s21.html">Next</a></td>
  25.         </tr>
  26.       </table>
  27.       <hr />
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  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-semiflatten"></a>3.20.┬áSemi-Flatten</h3>
  34.           </div>
  35.         </div>
  36.         <div></div>
  37.       </div>
  38.       <a id="id2973296" class="indexterm"></a>
  39.       <div class="simplesect" lang="en" xml:lang="en">
  40.         <div class="titlepage">
  41.           <div>
  42.             <div>
  43.               <h4 class="title"><a id="id2973315"></a>Overview</h4>
  44.             </div>
  45.           </div>
  46.           <div></div>
  47.         </div>
  48.         <div class="variablelist">
  49.           <dl>
  50.             <dt></dt>
  51.             <dd>
  52.               <p>
  53.             This filter is found in 
  54.             <span class="guimenuitem">Image>Filters/Colors/<span class="accel">S</span>emi-Flatten</span>
  55.             It is available if your image holds an Alpha channel 
  56.             (Image>Layers/Transparency/Add an alpha channel). 
  57.             Otherwise, it is greyed out.
  58.           </p>
  59.               <p>
  60.             The Semi-flatten filter helps those in need of a solution to anti-aliasing indexed images with 
  61.             transparency. The GIF indexed format supports complete transparency (0 or 255 alpha value), but 
  62.             not semi-transparency (1 - 254): semi-transparent pixels will be transformed to no transparence 
  63.             or complete transparence, ruining anti-aliasing you applied to the logo you want to put onto 
  64.             your Web page.
  65.           </p>
  66.               <p>
  67.            Before applying the filter, it's essential that you should know the background color of your Web 
  68.            page. Use the color-picker to determine the exact color. Click and drag this color from the Web 
  69.            page to the Toolbox ForeGround color. Invert FG/BG colors so that BG color is the same as Web 
  70.            background color.
  71.          </p>
  72.               <p>
  73.            Semi-flatten process will combine FG color to layer (logo) color, proportionnally to 
  74.            corresponding alpha values, and will rebuild correct anti-aliasing. Completely transparent pixels 
  75.            will not take the color. Very transparent pixels will take a few color and weakly transparent 
  76.            will take much color.
  77.          </p>
  78.             </dd>
  79.           </dl>
  80.         </div>
  81.       </div>
  82.       <div class="simplesect" lang="en" xml:lang="en">
  83.         <div class="titlepage">
  84.           <div>
  85.             <div>
  86.               <h4 class="title"><a id="id2973373"></a>Options</h4>
  87.             </div>
  88.           </div>
  89.           <div></div>
  90.         </div>
  91.         <p>
  92.       This filter has no option.
  93.     </p>
  94.       </div>
  95.     </div>
  96.     <div class="navfooter">
  97.       <hr />
  98.       <table width="100%" summary="Navigation footer">
  99.         <tr>
  100.           <td width="40%" align="left"><a accesskey="p" href="ch05s03s19.html">Prev</a>┬á</td>
  101.           <td width="20%" align="center">
  102.             <a accesskey="u" href="ch05s03.html">Up</a>
  103.           </td>
  104.           <td width="40%" align="right">┬á<a accesskey="n" href="ch05s03s21.html">Next</a></td>
  105.         </tr>
  106.         <tr>
  107.           <td width="40%" align="left" valign="top">3.19.┬áMax RGB┬á</td>
  108.           <td width="20%" align="center">
  109.             <a accesskey="h" href="index.html">Home</a>
  110.           </td>
  111.           <td width="40%" align="right" valign="top">┬á3.21.┬áSmooth Palette</td>
  112.         </tr>
  113.       </table>
  114.     </div>
  115.   </body>
  116. </html>
  117.