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swCHIP 1991 January
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swCHIP_95-1.bin
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demo
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wit4711
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rgrow.
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rgrow.bin
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1995-12-09
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893b
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20 lines
OPERATOR
rgrow --- region grow objects
DESCRIPTION
The rgrow operator performs a region growing operation on the input greyscale
image. The gap_x and gap_y parameters set the size of a connectivity window.
Any pixel above the given threshold and within the connectivity window are
grown into the same object. For example, if gap_x and gap_y are both 3 then
all pixels within a 3x3 window of the centred pixel are considered connected
and the region is filled from the centred pixel to the connecting pixels.
The threshold parameter determines which pixels are subject to region growing.
This operator is useful if the getBlobs connectivity region of a 3x3 is not
sufficient and a larger window is required. In this case, the rgrow operator
is used as a preprocessing stage by transforming a large connectivity window
to a 3x3 window.