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Erosion
The filter assigns minimum value of surrounding pixels to each pixel of the result image.
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Dilatation
The filter assigns maximum value of surrounding pixels to each pixel of the result image.
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Opening
Opening morphology operator equals to erosion followed by dilatation.
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Closing
Closing morphology operator equals to dilatation followed by erosion.
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Custom
Custom.
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Hit and miss, thickening, thinning
The hit-and-miss filter represents generalization of Erosion and Dilatation filters by extending flexibility of structuring elements and providing different modes of its work.
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