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  6.     <title>2.3.¬† Gaussian Blur</title>
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  14.     <link rel="prev" href="plug-in-blur.html" title="2.2.¬† Blur" />
  15.     <link rel="next" href="plug-in-sel-gauss.html" title="2.4.¬† Selective Gaussian Blur" />
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  18.     <div class="navheader">
  19.       <table width="100%" summary="Navigation header">
  20.         <tr>
  21.           <th colspan="3" align="center">2.3.¬†
  22.     <span lang="en" xml:lang="en">Gaussian Blur</span>
  23.   </th>
  24.         </tr>
  25.         <tr>
  26.           <td width="20%" align="left"><a accesskey="p" href="plug-in-blur.html"><img src="../images/prev.png" alt="Prev" /></a>¬†</td>
  27.           <th width="60%" align="center">2.¬†
  28.     <span lang="en" xml:lang="en">Blur Filters</span>
  29.   </th>
  30.           <td width="20%" align="right">¬†<a accesskey="n" href="plug-in-sel-gauss.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-gauss"></a>2.3.¬†
  40.     <span lang="en" xml:lang="en">Gaussian Blur</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: 1859 $</td>
  53.                   <td align="left">2006-10-23</td>
  54.                   <td align="left">j.h</td>
  55.                 </tr>
  56.               </table>
  57.             </div>
  58.           </div>
  59.         </div>
  60.       </div>
  61.       <a id="id2731003" class="indexterm"></a>
  62.       <a id="id2731021" class="indexterm"></a>
  63.       <div class="sect3" lang="en" xml:lang="en">
  64.         <div class="titlepage">
  65.           <div>
  66.             <div>
  67.               <h4 class="title"><a id="id2731030"></a>2.3.1.¬†
  68.       <span lang="en" xml:lang="en">Overview</span>
  69.     </h4>
  70.             </div>
  71.           </div>
  72.         </div>
  73.         <div class="figure">
  74.           <a id="id2731041"></a>
  75.           <p class="title">
  76.             <b>Figure¬†16.9.¬†
  77.         <span lang="en" xml:lang="en">
  78.           From left to right: original, filter applied.
  79.         </span>
  80.       </b>
  81.           </p>
  82.           <div class="figure-contents">
  83.             <div class="mediaobject">
  84.               <img src="../images/filters/examples/taj_orig.jpg" alt="From left to right: original, filter applied." />
  85.               <div class="caption">
  86.                 <p>Original</p>
  87.               </div>
  88.             </div>
  89.             <div class="mediaobject">
  90.               <img src="../images/filters/examples/blur-taj-gauss.jpg" alt="From left to right: original, filter applied." />
  91.               <div class="caption">
  92.                 <p>Blur applied</p>
  93.               </div>
  94.             </div>
  95.           </div>
  96.         </div>
  97.         <br class="figure-break" />
  98.         <p>
  99.       You can find this filter in the image menu under
  100.       <span class="guimenu">Filte<span class="accel">r</span>s</span> ‚Üí <span class="guisubmenu"><span class="accel">B</span>lur</span> ‚Üí <span class="guimenuitem"><span class="accel">G</span>aussian Blur</span>
  101.     </p>
  102.         <p>
  103.       The IIR Gaussian Blur plug-in acts on each pixel of the active layer or
  104.       selection, setting its Value to the average of all pixel Values present
  105.       in a radius defined in the dialog. A higher Value will produce a higher
  106.       amount of blur. The blur can be set to act in one direction more than
  107.       the other by clicking the Chain Button so that it is broken, and
  108.       altering the radius. GIMP supports two implementations of Gaussian Blur:
  109.       IIR G.B. and RLE G.B. They both produce the same results, but each one
  110.       can be faster in some cases.
  111.     </p>
  112.       </div>
  113.       <div class="sect3" lang="en" xml:lang="en">
  114.         <div class="titlepage">
  115.           <div>
  116.             <div>
  117.               <h4 class="title"><a id="id2731154"></a>2.3.2.¬†
  118.       <span lang="en" xml:lang="en">Options</span>
  119.     </h4>
  120.             </div>
  121.           </div>
  122.         </div>
  123.         <div class="figure">
  124.           <a id="id2731165"></a>
  125.           <p class="title">
  126.             <b>Figure¬†16.10.¬†
  127.         <span lang="en" xml:lang="en">
  128.           ‚Äú<span class="quote">Gaussian</span>‚Äù filter parameters settings
  129.         </span>
  130.       </b>
  131.           </p>
  132.           <div class="figure-contents">
  133.             <div class="mediaobject">
  134.               <img src="../images/filters/options-blur-gauss.png" alt="Gaussian filter parameters settings" />
  135.             </div>
  136.           </div>
  137.         </div>
  138.         <br class="figure-break" />
  139.         <div class="variablelist">
  140.           <dl>
  141.             <dt>
  142.               <span class="term">Blur Radius</span>
  143.             </dt>
  144.             <dd>
  145.               <p>
  146.             Here you can set the blur intensity. By altering the ratio of
  147.             horizontal to vertical blur, you can give the effect of a motion
  148.             blur. You can choose the unit with the drop list.
  149.           </p>
  150.             </dd>
  151.             <dt>
  152.               <span class="term">Blur Method</span>
  153.             </dt>
  154.             <dd>
  155.               <p>
  156.             <span class="guilabel">IIR</span>: IIR stands for ‚Äú<span class="quote">Infinite Impulse
  157.             Response</span>‚Äù.This blur works best for large radius values and
  158.             for images which are not computer generated.
  159.           </p>
  160.               <p>
  161.             <span class="guilabel">RLE</span>: RLE stands for run-length
  162.             encoding. RLE Gaussian Blur is best used on
  163.             computer-generated images or those with large areas of
  164.             constant intensity.
  165.           </p>
  166.             </dd>
  167.           </dl>
  168.         </div>
  169.       </div>
  170.     </div>
  171.     <div class="navfooter">
  172.       <hr />
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  175.           <td width="40%" align="left"><a accesskey="p" href="plug-in-blur.html"><img src="../images/prev.png" alt="Prev" /></a>¬†</td>
  176.           <td width="20%" align="center">
  177.             <a accesskey="u" href="filters-blur.html">
  178.               <img src="../images/up.png" alt="Up" />
  179.             </a>
  180.           </td>
  181.           <td width="40%" align="right">¬†<a accesskey="n" href="plug-in-sel-gauss.html"><img src="../images/next.png" alt="Next" /></a></td>
  182.         </tr>
  183.         <tr>
  184.           <td width="40%" align="left" valign="top"><a accesskey="p" href="plug-in-blur.html">2.2.¬†
  185.     <span lang="en" xml:lang="en">Blur</span>
  186.   </a>¬†</td>
  187.           <td width="20%" align="center">
  188.             <a accesskey="h" href="index.html">
  189.               <img src="../images/home.png" alt="Home" />
  190.             </a>
  191.           </td>
  192.           <td width="40%" align="right" valign="top">¬†<a accesskey="n" href="plug-in-sel-gauss.html">2.4.¬†
  193.     <span lang="en" xml:lang="en">Selective Gaussian Blur</span>
  194.   </a></td>
  195.         </tr>
  196.       </table>
  197.     </div>
  198.   </body>
  199. </html>
  200.