rank order, dilation and erosion on binary images
in [Matlab]
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From: Vassilis on 1 May 2010 16:01 Suppose we have a binary image A with dimensions NxM and Q pixels of value 1 where Q<N^2. Suppose again that we have a simple SE, denoted by B where B=true(1,3). the question is: in order to dilate, erode or apply rank order, is the B moving and "sitting" over each pixel of A? if yes, which is the reason to put B "over" an OFF pixel of A during erosion? or "over" an ON pixel during dilation? If no, how are the pixels (to put B "over" them) selected? And if there is a way to select these pixels, is this taken under consideration during rank order filter with r=1 (dilation) or r=3 (erosion)?
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