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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>2.2.┬áBlur</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="ch05s02.html" title="2.┬áBlur filters" />
  12.     <link rel="previous" href="ch05s02.html" title="2.┬áBlur filters" />
  13.     <link rel="next" href="ch05s02s03.html" title="2.3.┬áGaussian Blur (IIR)" />
  14.   </head>
  15.   <body>
  16.     <div class="navheader">
  17.       <table width="100%" summary="Navigation header">
  18.         <tr>
  19.           <th colspan="3" align="center">2.2.┬áBlur</th>
  20.         </tr>
  21.         <tr>
  22.           <td width="20%" align="left"><a accesskey="p" href="ch05s02.html">Prev</a>┬á</td>
  23.           <th width="60%" align="center">2.┬áBlur filters</th>
  24.           <td width="20%" align="right">┬á<a accesskey="n" href="ch05s02s03.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-blur"></a>2.2.┬áBlur</h3>
  34.           </div>
  35.         </div>
  36.         <div></div>
  37.       </div>
  38.       <a id="id2968840" class="indexterm"></a>
  39.       <div class="mediaobject">
  40.         <img src="../images/filters/filters-blur-blur.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="id2968867"></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/Blur/<span class="accel">B</span>lur</span>
  54.     </p>
  55.         <p>
  56.       The Blur filter produces an effect similar to that of an out of focus camera shot. To produce this 
  57.       blur effect, the filter takes the average of the present pixel value and the value of adjacent pixels 
  58.       and sets the present pixel to that average value. All pixels of the active layer or selection are not 
  59.       concerned by blurring. For each pixel, a random number is generated based on the seed value and 
  60.       compared against the randomization percentage. If the random value is less than the randomization 
  61.       percentage, then the pixel is blurred. A 100% randomization blur all the pixels and blurred pixel 
  62.       number is at the most equal to randomization percentage.
  63.     </p>
  64.       </div>
  65.       <div class="simplesect" lang="en" xml:lang="en">
  66.         <div class="titlepage">
  67.           <div>
  68.             <div>
  69.               <h4 class="title"><a id="id2968906"></a>Options</h4>
  70.             </div>
  71.           </div>
  72.           <div></div>
  73.         </div>
  74.         <div class="variablelist">
  75.           <dl>
  76.             <dt>
  77.               <span class="term">Random Seed</span>
  78.             </dt>
  79.             <dd>
  80.               <p>
  81.             <span class="guilabel">Random Seed</span> controls the randomization
  82.             element of the blur. The <span class="guibutton">Time</span> button will
  83.             set the seed using the hardware clock of the computer. Using
  84.             <span class="guibutton">Time</span> is the preferred method for
  85.             initializing Blur as it will provide a higher chance of differing
  86.             values over many uses.
  87.           </p>
  88.             </dd>
  89.             <dt>
  90.               <span class="term">Randomization %</span>
  91.             </dt>
  92.             <dd>
  93.               <p>
  94.             The <span class="guibutton">Randomization</span> slider represents the percentage of pixels of the 
  95.             active layer or selection which may be blurred. Higher value result in more blurring.
  96.           </p>
  97.             </dd>
  98.             <dt>
  99.               <span class="term">Repeat</span>
  100.             </dt>
  101.             <dd>
  102.               <p>
  103.             The <span class="guibutton">Repeat</span> slider represents the number of
  104.             times the active layer will be blurred. Higher values result in
  105.             more blurring.
  106.           </p>
  107.             </dd>
  108.           </dl>
  109.         </div>
  110.       </div>
  111.     </div>
  112.     <div class="navfooter">
  113.       <hr />
  114.       <table width="100%" summary="Navigation footer">
  115.         <tr>
  116.           <td width="40%" align="left"><a accesskey="p" href="ch05s02.html">Prev</a>┬á</td>
  117.           <td width="20%" align="center">
  118.             <a accesskey="u" href="ch05s02.html">Up</a>
  119.           </td>
  120.           <td width="40%" align="right">┬á<a accesskey="n" href="ch05s02s03.html">Next</a></td>
  121.         </tr>
  122.         <tr>
  123.           <td width="40%" align="left" valign="top">2.┬áBlur filters┬á</td>
  124.           <td width="20%" align="center">
  125.             <a accesskey="h" href="index.html">Home</a>
  126.           </td>
  127.           <td width="40%" align="right" valign="top">┬á2.3.┬áGaussian Blur (IIR)</td>
  128.         </tr>
  129.       </table>
  130.     </div>
  131.   </body>
  132. </html>
  133.