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swCHIP 1991 January
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swCHIP_95-1.bin
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wit4711
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morpho
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gopen.
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gopen.bin
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1995-12-09
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17 lines
OPERATOR
gopen --- greyscale opening
DESCRIPTION
The gopen operator computes a morphological opening on the greyscale input
image. An opening is an erosion followed by a dilation. The number of
iterations specified by the niterations parameter determines how many times the
erosion and dilation are executed. The greyscale erosion and dilation is
usually slower than its binary counterpart since a minimum or maximum has to
be computed for each neighborhood in the input image. In the binary version,
the erode and dilate operators do not usually have to look through the
entire kernel, but can be optimized to look only until the given pixel is
disqualified or qualified, respectively.