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-<chapter id="filters">
-<title>Filters</title>
-
-<para>
-&krita; comes with a number of filters. These can be used to enhance or
-otherwise modify the image, either in whole or in part. Some filters are
-applied directly, others are customizable, meaning that you are presented with
-a dialog in which you can tune the result to your liking before the filter is
-applied. If a selection is active, a filter is applied on the selected part of
-the image. If no selection is active, the entire image is modified.
-</para><para>
-This chapter describes the available filters in detail. To make comparing the
-filters easier, each filter has been applied to the same image and each description
-contains a comparison image, showing the result of applying the filter described.
-The original image (with thanks to the photographer, Christian Peper) is shown
-below at half the original size. The sample images demonstrating the
-results of applying the filters, with the original image at the left and the
-modified image at the right, are shown at 25% of the original size.
-</para>
-<note><para>Some filters yield reasonable results for most images. For
-other filters though, quite some tweaking needs to be done before the desired
-outcome is achieved. If a filter does not do what you want, it might need
-more or less customising. The examples in this chapter are exaggerated to
-give a good impression of the filters. You will usually want to have more
-<quote>gentle</quote> modifications.</para></note>
-<para>
-Tip: If you want to apply a filter to everything except a certain part of your
-image (for example, you want to desaturate your image except for the centre),
-select the part you do not want to apply the filter to, use the
-<menuchoice><guimenu>Select</guimenu><guimenuitem>Invert</guimenuitem></menuchoice>
-menu option, and then apply the filter.
-</para>
-<para>
-See the <link linkend="commands-dialogs-filters">Dialogs for working with
-filters</link> section for descriptions of the settings available for the
-customizable filters.
-</para>
-
-<screenshot>
-<screeninfo>The original image</screeninfo>
-<mediaobject>
-<imageobject>
-<imagedata fileref="crocusses.png" format="PNG" />
-</imageobject>
-<textobject>
-<phrase>The original image</phrase>
-</textobject>
-<caption><para>The original image</para></caption>
-</mediaobject>
-</screenshot>
-
-<sect1 id="filters-autocontrast">
-<title>The Auto Contrast filter</title>
-<para>
-The Auto Contrast filter changes the contrast of your image to what should be
-the best settings. Usually this works out fine, but in some cases (for example
-photos taken under unusual lighting circumstances), the filter will not yield
-satisfying results.
-</para>
-<para>
-You can find the Auto Contrast filter in the <menuchoice><guimenu>Filter</guimenu>
-<guisubmenu>Adjust</guisubmenu></menuchoice> menu. This filter is not customizable.
-</para>
-<screenshot>
-<screeninfo>The image with the Auto Contrast filter applied to it</screeninfo>
-<mediaobject>
-<imageobject>
-<imagedata fileref="crocusses-autocontrast.png" format="PNG" />
-</imageobject>
-<textobject>
-<phrase>The image with the Auto Contrast filter applied to it</phrase>
-</textobject>
-<caption><para>The image with the Auto Contrast filter applied to it</para></caption>
-</mediaobject>
-</screenshot>
-</sect1>
-
-<sect1 id="filters-blur">
-<title>The Blur filter</title>
-<para>
-You can use the Blur filter to blur your image (give it a fuzzy look).
-</para>
-<para>
-You can find the filter in the <menuchoice><guimenu>Filter</guimenu>
-<guisubmenu>Blur</guisubmenu></menuchoice> menu.
-See the section on <link linkend="commands-dialogs-filters-blur">the
-<guilabel>Blur</guilabel> dialog</link>
-for more information on its settings.
-</para>
-<screenshot>
-<screeninfo>The image with the Blur filter applied to it</screeninfo>
-<mediaobject>
-<imageobject>
-<imagedata fileref="crocusses-blur.png" format="PNG" />
-</imageobject>
-<textobject>
-<phrase>The image with the Blur filter applied to it</phrase>
-</textobject>
-<caption><para>The image with the Blur filter applied to it</para></caption>
-</mediaobject>
-</screenshot>
-</sect1>
-
-<sect1 id="filters-brightnesscontrast">
-<title>The Brightness / Contrast filter</title>
-<para>
-With this filter, you can adjust the brightness and contrast of your image.
-</para>
-<para>
-You can find the filter in the <menuchoice><guimenu>Filter</guimenu>
-<guisubmenu>Adjust</guisubmenu></menuchoice> menu.
-See the section on <link
-linkend="commands-dialogs-filters-brightnesscontrast">the
-<guilabel>Brightness / Contrast</guilabel> dialog</link>
-for more information on its settings.
-</para>
-<screenshot>
-<screeninfo>The image with the Brightness / Contrast filter applied to it</screeninfo>
-<mediaobject>
-<imageobject>
-<imagedata fileref="crocusses-brightnesscontrast.png" format="PNG" />
-</imageobject>
-<textobject>
-<phrase>The image with the Brightness / Contrast filter applied to it</phrase>
-</textobject>
-<caption><para>The image with the Brightness / Contrast filter applied to it</para></caption>
-</mediaobject>
-</screenshot>
-</sect1>
-
-<sect1 id="filters-bumpmap">
-<title>The Bumpmap filter</title>
-<para>
-The Bumpmap filter takes two layers and uses one of these to convert the other
-one so that it will give an illusion of depth. The object layer (the layer to be
-transformed) is the actual layer that should receive the three-dimensional
-looks. The bumpmap layer is a grayscale layer, which is read and used to
-determine the height for each point of the object layer. Alternatively, the
-same layer can be used as both object layer and bumpmap layer.
-</para>
-<para>
-You can find the filter in the <menuchoice><guimenu>Filter</guimenu>
-<guisubmenu>Map</guisubmenu></menuchoice> menu.
-See the section on <link
-linkend="commands-dialogs-filters-bumpmap">the
-<guilabel>Bumpmap</guilabel> dialog</link> for more information on its
-settings.
-</para>
-<screenshot>
-<screeninfo>The image with the Bumpmap filter applied to it</screeninfo>
-<mediaobject>
-<imageobject>
-<imagedata fileref="crocusses-bumpmap.png" format="PNG" />
-</imageobject>
-<textobject>
-<phrase>The image with the Bumpmap filter applied to it</phrase>
-</textobject>
-<caption><para>The image with the Bumpmap filter applied to it</para></caption>
-</mediaobject>
-</screenshot>
-</sect1>
-
-<sect1 id="filters-cimg">
-<title>The CImg Image Restoration filter</title>
-<para>
-With this filter, you can perform minor enhancements to your image, for
-example removing small scratches or adding a slight blur. The difference
-between our sample original image and the result of applying this filter with
-standard settings is virtually none.
-</para>
-<para>
-You can find the filter in the <menuchoice><guimenu>Filter</guimenu>
-<guisubmenu>Enhance</guisubmenu></menuchoice> menu.
-See the section on <link
-linkend="commands-dialogs-filters-imagerestoration">the
-<guilabel>Image Restoration</guilabel> dialog</link>
-for more information on its settings.
-</para>
-</sect1>
-
-<sect1 id="filters-coloradjustment">
-<title>The Color Adjustment filter</title>
-<para>
-This filter allows you to change the looks of your image by increasing or
-decreasing the abundance of certain colors.
-</para>
-<para>
-You can find the filter in the <menuchoice><guimenu>Filter</guimenu>
-<guisubmenu>Adjust</guisubmenu></menuchoice> menu.
-See the section on <link
-linkend="commands-dialogs-filters-coloradjustment">the
-<guilabel>Color Adjustment</guilabel> dialog</link>
-for more information on its settings.
-</para>
-<screenshot>
-<screeninfo>The image with the Color Adjustment filter applied to it</screeninfo>
-<mediaobject>
-<imageobject>
-<imagedata fileref="crocusses-coloradjustment.png" format="PNG" />
-</imageobject>
-<textobject>
-<phrase>The image with the Color Adjustment filter applied to it</phrase>
-</textobject>
-<caption><para>The image with the Color Adjustment filter applied to it</para></caption>
-</mediaobject>
-</screenshot>
-</sect1>
-
-<sect1 id="filters-colortoalpha">
-<title>The Color to Alpha filter</title>
-<para>
-This filter changes a color or color range in your image to become
-transparent, effectively clearing regions with those colors.
-</para>
-<para>
-You can find the filter in the <menuchoice><guimenu>Filter</guimenu>
-<guisubmenu>Colors</guisubmenu></menuchoice> menu.
-See the section on <link
-linkend="commands-dialogs-filters-colortoalpha">the
-<guilabel>Color to Alpha</guilabel> dialog</link>
-for more information on its settings.
-</para>
-<screenshot>
-<screeninfo>The image with the Color to Alpha filter applied to it</screeninfo>
-<mediaobject>
-<imageobject>
-<imagedata fileref="crocusses-colortoalpha.png" format="PNG" />
-</imageobject>
-<textobject>
-<phrase>The image with the Color to Alpha filter applied to it</phrase>
-</textobject>
-<caption><para>The image with the Color to Alpha filter applied to it</para></caption>
-</mediaobject>
-</screenshot>
-</sect1>
-
-<sect1 id="filters-colortransfer">
-<title>The Color Transfer filter</title>
-<para>
-With this filter, you can re-color an image using the colors from another
-image. Each color in your current image will be replaced by the most alike
-color used in the other image.
-</para>
-<para>
-You can find the filter in the <menuchoice><guimenu>Filter</guimenu>
-<guisubmenu>Colors</guisubmenu></menuchoice> menu.
-See the section on <link
-linkend="commands-dialogs-filters-colortransfer">the
-<guilabel>Color Transfer</guilabel> dialog</link>
-for more information on its settings.
-</para>
-<screenshot>
-<screeninfo>The image with the Color Transfer filter applied to it</screeninfo>
-<mediaobject>
-<imageobject>
-<imagedata fileref="crocusses-colortransfer.png" format="PNG" />
-</imageobject>
-<textobject>
-<phrase>The image with the Color Transfer filter applied to it</phrase>
-</textobject>
-<caption><para>The image with the Color Transfer filter applied to it</para></caption>
-</mediaobject>
-</screenshot>
-</sect1>
-
-<sect1 id="filters-customconvolution">
-<title>The Custom Convolution filter</title>
-<para>
-This filter allows you to distort your image by setting a number of
-parameters.
-</para>
-<para>
-You can find the filter in the <menuchoice><guimenu>Filter</guimenu>
-<guisubmenu>Enhance</guisubmenu></menuchoice> menu.
-See the section on <link
-linkend="commands-dialogs-filters-customconvolution">the
-<guilabel>Custom Convolution</guilabel> dialog</link>
-for more information on its settings.
-</para>
-<screenshot>
-<screeninfo>The image with the Custom Convolution filter applied to it</screeninfo>
-<mediaobject>
-<imageobject>
-<imagedata fileref="crocusses-customconvolution.png" format="PNG" />
-</imageobject>
-<textobject>
-<phrase>The image with the Custom Convolution filter applied to it</phrase>
-</textobject>
-<caption><para>The image with the Custom Convolution filter applied to it</para></caption>
-</mediaobject>
-</screenshot>
-</sect1>
-
-<sect1 id="filters-desaturate">
-<title>The Desaturate filter</title>
-<para>
-This filter converts your image to grayscale by setting the saturation of each
-pixel's color to zero.
-</para>
-<para>
-You can find the filter in the <menuchoice><guimenu>Filter</guimenu>
-<guisubmenu>Adjust</guisubmenu></menuchoice> menu.
-This filter is not customizable.
-</para>
-<screenshot>
-<screeninfo>The image with the Desaturate filter applied to it</screeninfo>
-<mediaobject>
-<imageobject>
-<imagedata fileref="crocusses-desaturate.png" format="PNG" />
-</imageobject>
-<textobject>
-<phrase>The image with the Desaturate filter applied to it</phrase>
-</textobject>
-<caption><para>The image with the Desaturate filter applied to it</para></caption>
-</mediaobject>
-</screenshot>
-</sect1>
-
-<sect1 id="filters-edgedetection">
-<title>The Edge Detection filters</title>
-<para>
-These filters try to detect <quote>edges</quote> (boundaries) in the picture
-and modify the image such that only these edges retain their respective colors,
-while the rest of the image is turned gray. Through the use of lighting the
-image will then get a three-dimensional look.
-</para><para>
-There are four edge detection filters available. Each of these detects edges
-from a different side (possibly considering other parts of the image as being
-edges) and will therefore obtain a different resulting image.
-</para>
-<para>
-You can find the filters in the <menuchoice><guimenu>Filter</guimenu>
-<guisubmenu>Edge Detection</guisubmenu></menuchoice> menu.
-These filters are not customizable.
-</para>
-<screenshot>
-<screeninfo>The image with the Bottom Edge Detection filter applied to
-it</screeninfo>
-<mediaobject>
-<imageobject>
-<imagedata fileref="crocusses-edgebottom.png" format="PNG" />
-</imageobject>
-<textobject>
-<phrase>The image with the Bottom Edge Detection filter applied to it</phrase>
-</textobject>
-<caption><para>The image with the Bottom Edge Detection filter applied to
-it</para></caption>
-</mediaobject>
-</screenshot>
-</sect1>
-
-<sect1 id="filters-emboss">
-<title>The Emboss filters</title>
-<para>
-Emboss filters work somewhat like edge detection filters, with the difference
-that embossed images are entirely gray. Areas in the picture are detected and
-are given a certain <quote>height level</quote>, which is made visible by using
-grayscale borders, making the image look like it is three-dimensional.
-</para>
-<para>
-You can find the filters in the <menuchoice><guimenu>Filter</guimenu>
-<guisubmenu>Emboss</guisubmenu></menuchoice> menu.
-Except for the Emboss with Variable Depth filter, these filters are not
-customizable. See the section on <link
-linkend="commands-dialogs-filters-emboss">the
-<guilabel>Emboss</guilabel> dialog</link>
-for more information on the settings of the Emboss with Variable Depth filter.
-</para>
-<screenshot>
-<screeninfo>The image with the Emboss in All Directions filter applied to it</screeninfo>
-<mediaobject>
-<imageobject>
-<imagedata fileref="crocusses-embossall.png" format="PNG" />
-</imageobject>
-<textobject>
-<phrase>The image with the Emboss in All Directions filter applied to it</phrase>
-</textobject>
-<caption><para>The image with the Emboss in All Directions filter applied to
-it</para></caption>
-</mediaobject>
-</screenshot>
-<screenshot>
-<screeninfo>The image with the Emboss with Variable depth filter applied to
-it</screeninfo>
-<mediaobject>
-<imageobject>
-<imagedata fileref="crocusses-embossvariable.png" format="PNG" />
-</imageobject>
-<textobject>
-<phrase>The image with the Emboss with Variable depth filter applied to it</phrase>
-</textobject>
-<caption><para>The image with the Emboss with Variable depth filter applied to
-it</para></caption>
-</mediaobject>
-</screenshot>
-</sect1>
-
-<sect1 id="filters-gaussianblur">
-<title>The Gaussian Blur filter</title>
-<para>
-This filter makes the image a little fuzzy by blurring it in a pseudo-random
-way. A gaussian algorithm is used for finding the extent to which each part of
-the image should be blurred.
-</para>
-<para>
-You can find the filter in the <menuchoice><guimenu>Filter</guimenu>
-<guisubmenu>Blur</guisubmenu></menuchoice> menu.
-This filter is not customizable.
-</para>
-<screenshot>
-<screeninfo>The image with the Gaussian Blur filter applied to it</screeninfo>
-<mediaobject>
-<imageobject>
-<imagedata fileref="crocusses-gaussianblur.png" format="PNG" />
-</imageobject>
-<textobject>
-<phrase>The image with the Gaussian Blur filter applied to it</phrase>
-</textobject>
-<caption><para>The image with the Gaussian Blur filter applied to
-it</para></caption>
-</mediaobject>
-</screenshot>
-</sect1>
-
-<sect1 id="filters-gaussiannoise">
-<title>The Gaussian Noise Reduction filter</title>
-<para>
-With this filter, you can remove noise from your image.
-</para>
-<para>
-You can find the filter in the <menuchoice><guimenu>Filter</guimenu>
-<guisubmenu>Enhance</guisubmenu></menuchoice> menu.
-See the section on <link
-linkend="commands-dialogs-filters-gaussiannoise">the
-<guilabel>Gaussian Noise Reduction</guilabel> dialog</link>
-for more information on its settings.
-</para>
-<screenshot>
-<screeninfo>The image with the Gaussian Noise Reduction filter applied to it</screeninfo>
-<mediaobject>
-<imageobject>
-<imagedata fileref="crocusses-gaussiannoise.png" format="PNG" />
-</imageobject>
-<textobject>
-<phrase>The image with the Gaussian Noise Reduction filter applied to it</phrase>
-</textobject>
-<caption><para>The image with the Gaussian Noise Reduction filter applied to it</para></caption>
-</mediaobject>
-</screenshot>
-</sect1>
-
-<sect1 id="filters-invert">
-<title>The Invert filter</title>
-<para>
-This filter inverts all colors. The Red, Green and Blue component of each pixel
-are taken and subtracted from 255. This means that red becomes cyan, green
-becomes purple, and blue becomes yellow. The resulting values form the new
-pixel color.
-</para>
-<para>
-You can find the filter in the <menuchoice><guimenu>Filter</guimenu>
-<guisubmenu>Adjust</guisubmenu></menuchoice> menu.
-This filter is not customizable.
-</para>
-<screenshot>
-<screeninfo>The image with the Invert filter applied to it</screeninfo>
-<mediaobject>
-<imageobject>
-<imagedata fileref="crocusses-invert.png" format="PNG" />
-</imageobject>
-<textobject>
-<phrase>The image with the Invert filter applied to it</phrase>
-</textobject>
-<caption><para>The image with the Invert filter applied to it</para></caption>
-</mediaobject>
-</screenshot>
-</sect1>
-
-<sect1 id="filters-lenscorrection">
-<title>The Lens Correction filter</title>
-<para>
-This filter can fix distortions in your image resulting from for example
-<quote>pincushion</quote> lens effects, and modify some lighting.
-</para>
-<para>
-You can find the filter in the <menuchoice><guimenu>Filter</guimenu>
-<guisubmenu>Other</guisubmenu></menuchoice> menu.
-See the section on <link
-linkend="commands-dialogs-filters-lenscorrection">the
-<guilabel>Lens Correction</guilabel> dialog</link>
-for more information on its settings.
-</para>
-<screenshot>
-<screeninfo>The image with the Lens Correction filter applied to it</screeninfo>
-<mediaobject>
-<imageobject>
-<imagedata fileref="crocusses-lenscorrection.png" format="PNG" />
-</imageobject>
-<textobject>
-<phrase>The image with the Lens Correction filter applied to it</phrase>
-</textobject>
-<caption><para>The image with the Lens Correction filter applied to it</para></caption>
-</mediaobject>
-</screenshot>
-</sect1>
-
-<sect1 id="filters-maximizechannel">
-<title>The Maximize Channel filter</title>
-<para>
-This filter gives each pixel in your image a new color: only the color channel
-that contributes the most to the color of a pixel is retained (except for
-gray pixels, which are kept gray).
-</para>
-<para>
-You can find the filter in the <menuchoice><guimenu>Filter</guimenu>
-<guisubmenu>Colors</guisubmenu></menuchoice> menu.
-This filter is not customizable.
-</para>
-<screenshot>
-<screeninfo>The image with the Maximize Channel filter applied to it</screeninfo>
-<mediaobject>
-<imageobject>
-<imagedata fileref="crocusses-maximizechannel.png" format="PNG" />
-</imageobject>
-<textobject>
-<phrase>The image with the Maximize Channel filter applied to it</phrase>
-</textobject>
-<caption><para>The image with the Maximize Channel filter applied to it</para></caption>
-</mediaobject>
-</screenshot>
-</sect1>
-
-<sect1 id="filters-meanremoval">
-<title>The Mean Removal filter</title>
-<para>
-This filter sharpens the image by changing the colors of neighboring pixels
-with approximately the same color, so that small differences are evened out.
-</para>
-<para>
-You can find the filter in the <menuchoice><guimenu>Filter</guimenu>
-<guisubmenu>Enhance</guisubmenu></menuchoice> menu.
-This filter is not customizable.
-</para>
-<screenshot>
-<screeninfo>The image with the Mean Removal filter applied to it</screeninfo>
-<mediaobject>
-<imageobject>
-<imagedata fileref="crocusses-meanremoval.png" format="PNG" />
-</imageobject>
-<textobject>
-<phrase>The image with the Mean Removal filter applied to it</phrase>
-</textobject>
-<caption><para>The image with the Mean Removal filter applied to
-it</para></caption>
-</mediaobject>
-</screenshot>
-</sect1>
-
-<sect1 id="filters-minimizechannel">
-<title>The Minimize Channel filter</title>
-<para>
-This filter gives each pixel in your image a new color: the color channel
-that contributes the most to the color of a pixel is removed (except for
-gray pixels, which are kept gray).
-</para>
-<para>
-You can find the filter in the <menuchoice><guimenu>Filter</guimenu>
-<guisubmenu>Colors</guisubmenu></menuchoice> menu.
-This filter is not customizable.
-</para>
-<screenshot>
-<screeninfo>The image with the Minimize Channel filter applied to it</screeninfo>
-<mediaobject>
-<imageobject>
-<imagedata fileref="crocusses-minimizechannel.png" format="PNG" />
-</imageobject>
-<textobject>
-<phrase>The image with the Minimize Channel filter applied to it</phrase>
-</textobject>
-<caption><para>The image with the Minimize Channel filter applied to it</para></caption>
-</mediaobject>
-</screenshot>
-</sect1>
-
-<sect1 id="filters-oilpaint">
-<title>The Oilpaint filter</title>
-<para>
-An oilpaint effect is given to the image by creating patch-shaped areas in which
-the most important color is applied to the entire area.
-</para>
-<para>
-You can find the filter in the <menuchoice><guimenu>Filter</guimenu>
-<guisubmenu>Artistic</guisubmenu></menuchoice> menu.
-See the section on <link
-linkend="commands-dialogs-filters-oilpaint">the
-<guilabel>Oilpaint</guilabel> dialog</link>
-for more information on its settings.
-</para>
-<screenshot>
-<screeninfo>The image with the Oilpaint filter applied to it</screeninfo>
-<mediaobject>
-<imageobject>
-<imagedata fileref="crocusses-oilpaint.png" format="PNG" />
-</imageobject>
-<textobject>
-<phrase>The image with the Oilpaint filter applied to it</phrase>
-</textobject>
-<caption><para>The image with the Oilpaint filter applied to
-it</para></caption>
-</mediaobject>
-</screenshot>
-</sect1>
-
-<sect1 id="filters-pixelize">
-<title>The Pixelize filter</title>
-<para>
-The image is pixelated by taking a square area and giving it the mean color
-value of the pixels it contains.
-</para>
-<para>
-You can find the filter in the <menuchoice><guimenu>Filter</guimenu>
-<guisubmenu>Artistic</guisubmenu></menuchoice> menu.
-See the section on <link
-linkend="commands-dialogs-filters-pixelize">the
-<guilabel>Pixelize</guilabel> dialog</link>
-for more information on its settings.
-</para>
-<screenshot>
-<screeninfo>The image with the Pixelize filter applied to it</screeninfo>
-<mediaobject>
-<imageobject>
-<imagedata fileref="crocusses-pixelize.png" format="PNG" />
-</imageobject>
-<textobject>
-<phrase>The image with the Pixelize filter applied to it</phrase>
-</textobject>
-<caption><para>The image with the Pixelize filter applied to
-it</para></caption>
-</mediaobject>
-</screenshot>
-</sect1>
-
-<sect1 id="filters-raindrops">
-<title>The Raindrops filter</title>
-<para>
-This filter makes it look like raindrops have fallen on the image by distorting
-drop-shaped areas with a lens-like effect as one would see when looking
-at the image through a real raindrop. Some raindrops will have a fish-eye lens
-effect.
-</para>
-<para>
-You can find the filter in the <menuchoice><guimenu>Filter</guimenu>
-<guisubmenu>Artistic</guisubmenu></menuchoice> menu.
-See the section on <link
-linkend="commands-dialogs-filters-raindrops">the
-<guilabel>Raindrops</guilabel> dialog</link>
-for more information on its settings.
-</para>
-<screenshot>
-<screeninfo>The image with the Raindrops filter applied to it</screeninfo>
-<mediaobject>
-<imageobject>
-<imagedata fileref="crocusses-raindrops.png" format="PNG" />
-</imageobject>
-<textobject>
-<phrase>The image with the Raindrops filter applied to it</phrase>
-</textobject>
-<caption><para>The image with the Raindrops filter applied to
-it</para></caption>
-</mediaobject>
-</screenshot>
-</sect1>
-
-<sect1 id="filters-randomnoise">
-<title>The Random Noise filter</title>
-<para>
-With this filter, random noise can be added to your image.
-</para>
-<para>
-You can find the filter in the <menuchoice><guimenu>Filter</guimenu>
-<guisubmenu>Other</guisubmenu></menuchoice> menu.
-See the section on <link
-linkend="commands-dialogs-filters-randomnoise">the
-<guilabel>Random Noise</guilabel> dialog</link>
-for more information on its settings.
-</para>
-<screenshot>
-<screeninfo>The image with the Random Noise filter applied to it</screeninfo>
-<mediaobject>
-<imageobject>
-<imagedata fileref="crocusses-randomnoise.png" format="PNG" />
-</imageobject>
-<textobject>
-<phrase>The image with the Random Noise filter applied to it</phrase>
-</textobject>
-<caption><para>The image with the Random Noise filter applied to it</para></caption>
-</mediaobject>
-</screenshot>
-</sect1>
-
-<sect1 id="filters-randompick">
-<title>The Random Pick filter</title>
-<para>
-This filter distorts the image by interchanging pixels.
-</para>
-<para>
-You can find the filter in the <menuchoice><guimenu>Filter</guimenu>
-<guisubmenu>Other</guisubmenu></menuchoice> menu.
-See the section on <link
-linkend="commands-dialogs-filters-randompick">the
-<guilabel>Random Pick</guilabel> dialog</link>
-for more information on its settings.
-</para>
-<screenshot>
-<screeninfo>The image with the Random Pick filter applied to it</screeninfo>
-<mediaobject>
-<imageobject>
-<imagedata fileref="crocusses-randompick.png" format="PNG" />
-</imageobject>
-<textobject>
-<phrase>The image with the Random Pick filter applied to it</phrase>
-</textobject>
-<caption><para>The image with the Random Pick filter applied to it</para></caption>
-</mediaobject>
-</screenshot>
-</sect1>
-
-<sect1 id="filters-roundcorners">
-<title>The Round Corners filter</title>
-<para>
-This filter just rounds off the corners of the image. This is done by making
-the outside of the rounded corner transparent.
-</para>
-<para>
-You can find the filter in the <menuchoice><guimenu>Filter</guimenu>
-<guisubmenu>Map</guisubmenu></menuchoice> menu.
-See the section on <link
-linkend="commands-dialogs-filters-roundcorners">the
-<guilabel>Round Corners</guilabel> dialog</link>
-for more information on its settings.
-</para>
-<screenshot>
-<screeninfo>The image with the Round Corners filter applied to it</screeninfo>
-<mediaobject>
-<imageobject>
-<imagedata fileref="crocusses-roundcorners.png" format="PNG" />
-</imageobject>
-<textobject>
-<phrase>The image with the Round Corners filter applied to it</phrase>
-</textobject>
-<caption><para>The image with the Round Corners filter applied to
-it</para></caption>
-</mediaobject>
-</screenshot>
-</sect1>
-
-<sect1 id="filters-sharpen">
-<title>The Sharpen filter</title>
-<para>
-This filter sharpens the image.
-</para>
-<para>
-You can find the filter in the <menuchoice><guimenu>Filter</guimenu>
-<guisubmenu>Enhance</guisubmenu></menuchoice> menu.
-This filter is not customizable.
-</para>
-<screenshot>
-<screeninfo>The image with the Sharpen filter applied to it</screeninfo>
-<mediaobject>
-<imageobject>
-<imagedata fileref="crocusses-sharpen.png" format="PNG" />
-</imageobject>
-<textobject>
-<phrase>The image with the Sharpen filter applied to it</phrase>
-</textobject>
-<caption><para>The image with the Sharpen filter applied to it</para></caption>
-</mediaobject>
-</screenshot>
-</sect1>
-
-<sect1 id="filters-smalltiles">
-<title>The Small Tiles filter</title>
-<para>
-The picture is reduced in size and repeated multiple times.
-</para>
-<para>
-You can find the filter in the <menuchoice><guimenu>Filter</guimenu>
-<guisubmenu>Map</guisubmenu></menuchoice> menu.
-See the section on <link
-linkend="commands-dialogs-filters-smalltiles">the
-<guilabel>Small Tiles</guilabel> dialog</link>
-for more information on its settings.
-</para>
-<screenshot>
-<screeninfo>The image with the Small Tiles filter applied to it</screeninfo>
-<mediaobject>
-<imageobject>
-<imagedata fileref="crocusses-smalltiles.png" format="PNG" />
-</imageobject>
-<textobject>
-<phrase>The image with the Small Tiles filter applied to it</phrase>
-</textobject>
-<caption><para>The image with the Small Tiles filter applied to
-it</para></caption>
-</mediaobject>
-</screenshot>
-</sect1>
-
-<sect1 id="filters-sobel">
-<title>The Sobel filter</title>
-<para>
-This is a more enhanced edge detection filter.
-</para>
-<para>
-You can find the filter in the <menuchoice><guimenu>Filter</guimenu>
-<guisubmenu>Edge Detection</guisubmenu></menuchoice> menu.
-See the section on <link
-linkend="commands-dialogs-filters-sobel">the
-<guilabel>Sobel</guilabel> dialog</link>
-for more information on its settings.
-</para>
-<screenshot>
-<screeninfo>The image with the Sobel filter applied to it</screeninfo>
-<mediaobject>
-<imageobject>
-<imagedata fileref="crocusses-sobel.png" format="PNG" />
-</imageobject>
-<textobject>
-<phrase>The image with the Sobel filter applied to it</phrase>
-</textobject>
-<caption><para>The image with the Sobel filter applied to it</para></caption>
-</mediaobject>
-</screenshot>
-</sect1>
-
-<sect1 id="filters-unsharpmask">
-<title>The Unsharp Mask filter</title>
-<para>
-This filter sharpens part of your image. (The name <quote>unsharp</quote> is
-historical: parts would be masked off while the rest would be made less sharp.)
-</para>
-<para>
-You can find the filter in the <menuchoice><guimenu>Filter</guimenu>
-<guisubmenu>Enhance</guisubmenu></menuchoice> menu.
-See the section on <link
-linkend="commands-dialogs-filters-unsharpmask">the
-<guilabel>Unsharp Mask</guilabel> dialog</link>
-for more information on its settings.
-</para>
-<screenshot>
-<screeninfo>The image with the Unsharp Mask filter applied to it</screeninfo>
-<mediaobject>
-<imageobject>
-<imagedata fileref="crocusses-unsharpmask.png" format="PNG" />
-</imageobject>
-<textobject>
-<phrase>The image with the Unsharp Mask filter applied to it</phrase>
-</textobject>
-<caption><para>The image with the Unsharp Mask filter applied to it</para></caption>
-</mediaobject>
-</screenshot>
-</sect1>
-
-<sect1 id="filters-wave">
-<title>The Wave filter</title>
-<para>
-This filter transforms your image into a wave shape.
-</para>
-<para>
-You can find the filter in the <menuchoice><guimenu>Filter</guimenu>
-<guisubmenu>Other</guisubmenu></menuchoice> menu.
-See the section on <link
-linkend="commands-dialogs-filters-wave">the
-<guilabel>Wave</guilabel> dialog</link>
-for more information on its settings.
-</para>
-<screenshot>
-<screeninfo>The image with the Wave filter applied to it</screeninfo>
-<mediaobject>
-<imageobject>
-<imagedata fileref="crocusses-wave.png" format="PNG" />
-</imageobject>
-<textobject>
-<phrase>The image with the Wave filter applied to it</phrase>
-</textobject>
-<caption><para>The image with the Wave filter applied to it</para></caption>
-</mediaobject>
-</screenshot>
-</sect1>
-
-<sect1 id="filters-waveletnoise">
-<title>The Wavelet Noise Reduction filter</title>
-<para>
-This filter reduces noise in the image by giving loose pixels a color close to
-the surrounding area. This causes small details to be lost, but can enhance the
-general view of the image when this is hampered by too many unnecessary details.
-</para>
-<para>
-You can find the filter in the <menuchoice><guimenu>Filter</guimenu>
-<guisubmenu>Enhance</guisubmenu></menuchoice> menu.
-See the section on <link
-linkend="commands-dialogs-filters-waveletnoise">the
-<guilabel>Wavelet Noise Reduction</guilabel> dialog</link>
-for more information on its settings.
-</para>
-<screenshot>
-<screeninfo>The image with the Wavelet Noise Reduction filter applied to
-it</screeninfo>
-<mediaobject>
-<imageobject>
-<imagedata fileref="crocusses-waveletnoise.png" format="PNG" />
-</imageobject>
-<textobject>
-<phrase>The image with the Wavelet Noise Reduction filter applied to it</phrase>
-</textobject>
-<caption><para>The image with the Wavelet Noise Reduction filter applied to
-it</para></caption>
-</mediaobject>
-</screenshot>
-</sect1>
-
-
-</chapter>