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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>4.3.┬áNoisify</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" />
  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="ch05s04.html" title="4.┬áNoise filters" />
  12.     <link rel="previous" href="ch05s04s02.html" title="4.2.┬áHurl" />
  13.     <link rel="next" href="ch05s04s04.html" title="4.4.┬áPick" />
  14.   </head>
  15.   <body>
  16.     <div class="navheader">
  17.       <table width="100%" summary="Navigation header">
  18.         <tr>
  19.           <th colspan="3" align="center">4.3.┬áNoisify</th>
  20.         </tr>
  21.         <tr>
  22.           <td width="20%" align="left"><a accesskey="p" href="ch05s04s02.html">Prev</a>┬á</td>
  23.           <th width="60%" align="center">4.┬áNoise filters</th>
  24.           <td width="20%" align="right">┬á<a accesskey="n" href="ch05s04s04.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-noisify"></a>4.3.┬áNoisify</h3>
  34.           </div>
  35.         </div>
  36.         <div></div>
  37.       </div>
  38.       <a id="id2973839" class="indexterm"></a>
  39.       <div class="mediaobject">
  40.         <img src="../images/filters/filters-noise-noisify.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="id2973871"></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/Noise/<span class="accel">N</span>oisify</span>  
  54.     </p>
  55.         <p>
  56.       The Noisify filter increases, for random selected pixels in active layer or selection, 
  57.       color of one or more channels. That's the equivalent of an added "noise" in sound field
  58.     </p>
  59.       </div>
  60.       <div class="simplesect" lang="en" xml:lang="en">
  61.         <div class="titlepage">
  62.           <div>
  63.             <div>
  64.               <h4 class="title"><a id="id2973902"></a>Options</h4>
  65.             </div>
  66.           </div>
  67.           <div></div>
  68.         </div>
  69.         <div class="variablelist">
  70.           <dl>
  71.             <dt>
  72.               <span class="term">Preview</span>
  73.             </dt>
  74.             <dd>
  75.               <p>
  76.             This preview displays interactively changes before they are applied to the image. It reproduces 
  77.             the upper left corner of the layer or the selection.
  78.           </p>
  79.             </dd>
  80.             <dt>
  81.               <span class="term">Red Blue Green Sliders</span>
  82.             </dt>
  83.             <dd>
  84.               <p>
  85.             These slidebars and adjacent input boxes allow to set noise level (0 - 1) in each channel. 
  86.             Apha channel is only present if your image holds such a channel. In case of a grayscaled 
  87.             image, Red channel is for Grey and Green channel is for Alpha.
  88.           </p>
  89.               <p>
  90.             When adding color to a pixel, its color may go beyond 255. In that case, a negative value is 
  91.             added and color value decreases. This may change color when value of the concerned pixel 
  92.             becomes lower than that of another channel. 
  93.           </p>
  94.             </dd>
  95.             <dt>
  96.               <span class="term">Independent</span>
  97.             </dt>
  98.             <dd>
  99.               <p>
  100.             If this checkbox is not checked, then all sliders move together and the same relative noise 
  101.             will be added to all channels so that the image color balance will be kept.
  102.           </p>
  103.             </dd>
  104.           </dl>
  105.         </div>
  106.       </div>
  107.     </div>
  108.     <div class="navfooter">
  109.       <hr />
  110.       <table width="100%" summary="Navigation footer">
  111.         <tr>
  112.           <td width="40%" align="left"><a accesskey="p" href="ch05s04s02.html">Prev</a>┬á</td>
  113.           <td width="20%" align="center">
  114.             <a accesskey="u" href="ch05s04.html">Up</a>
  115.           </td>
  116.           <td width="40%" align="right">┬á<a accesskey="n" href="ch05s04s04.html">Next</a></td>
  117.         </tr>
  118.         <tr>
  119.           <td width="40%" align="left" valign="top">4.2.┬áHurl┬á</td>
  120.           <td width="20%" align="center">
  121.             <a accesskey="h" href="index.html">Home</a>
  122.           </td>
  123.           <td width="40%" align="right" valign="top">┬á4.4.┬áPick</td>
  124.         </tr>
  125.       </table>
  126.     </div>
  127.   </body>
  128. </html>
  129.