A filter is a special kind of tool designed to take an input layer or
image, apply a mathematical algorithm to it, and return the input layer or
image in a modified format. GIMP
uses filters to achieve a variety of effects and those effects are
discussed here.
The filters are divided into several categories:
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Secção 3, “Blur Filters”
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Secção 4, “Enhance Filters”
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Secção 5, “Distort Filters”
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Secção 6, “Light and Shadow Filters”
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Secção 7, “Noise Filters”
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Secção 8, “Edge-Detect Filters”
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Secção 9, “Generic Filters”
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Secção 10, “Combine Filters”
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Secção 11, “Artistic Filters”
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Secção 12, “Decor Filters”
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Secção 13, “Map Filters”
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Secção 14, “Rendering Filters”
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Secção 15, “Web Filters”
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Secção 16, “Animation Filters”