1 <?xml version="1.0" encoding="UTF-8"?>
2 <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
3 "http://www.docbook.org/xml/4.3/docbookx.dtd">
5 2008-08-01 prokoudine: improved Russian content
6 2007-12-31 MikaS: updated 'fr'
7 2007-05-27 KoSt: changed structure 'no'
8 2007-05-11 lexa: minor change for de
9 2007-03-27 KoSt: added 'no'
10 2007-01-24 alessandro falappa: translated restructured list of filter categories
11 2006-12-21 lexa: restructured the list of filter categories to contain links
12 2006-10-25 Added section for Previews and their submenu by j.h
13 2005-08-18 de reviewed by axel.wernicke
15 <sect1 id="filter-introduction">
16 <title>Introduction</title>
19 <primary>Filters</primary><secondary>Introduction</secondary>
22 <primary>Preview</primary><secondary>Filter</secondary>
26 A filter is a special kind of tool designed to take an input layer or
27 image, apply a mathematical algorithm to it, and return the input layer or
28 image in a modified format. <acronym>GIMP</acronym>
29 uses filters to achieve a variety of effects and those effects are
34 <para>The filters are divided into several categories:</para>
36 <para><xref linkend="filters-blur"/></para>
39 <para><xref linkend="filters-enhance"/></para>
42 <para><xref linkend="filters-distort"/></para>
45 <para><xref linkend="filters-light-and-shadow"/></para>
48 <para><xref linkend="filters-noise"/></para>
51 <para><xref linkend="filters-edge"/></para>
54 <para><xref linkend="filters-generic"/></para>
57 <para><xref linkend="filters-combine"/></para>
60 <para><xref linkend="filters-artistic"/></para>
63 <para><xref linkend="filters-decor"/></para>
66 <para><xref linkend="filters-map"/></para>
69 <para><xref linkend="filters-render"/></para>
72 <para><xref linkend="filters-web"/></para>
75 <para><xref linkend="filters-animation"/></para>
80 <title>Preview</title>
82 Most filters have a Preview where changes in the image are displayed, in
83 real time (if the <quote>Preview</quote> option is checked), before
84 being applied to the image.
87 <title>Preview submenu</title>
90 <imagedata format="PNG"
91 fileref="images/filters/preview-submenu.png"/>
95 Right clicking on the Preview window opens a submenu which lets
96 you set the Style and the Size of checks representing