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<DIV>Dear experts</DIV>
<DIV> </DIV>
<DIV>I was just playing with the watershed pipeline a few days ago using a
checkerboard pattern (with uint8 grids of black=64, gray=153, white=192),
and observed a zig-zaggy pattern on some edges (see <A
title=http://www.ece.ubc.ca/~alberth/watershed.png
href="http://www.ece.ubc.ca/~alberth/watershed.png">http://www.ece.ubc.ca/~alberth/watershed.png</A>).
Adding a smooth field on the checkboard results in more zig-zaggy behaviors on
edges that seem fairly strong in the input image. I am wondering if this is
normal behavior for the itkWatershedImageFilter?</DIV>
<DIV> </DIV>
<DIV>My pipeline (ITK 3.0.1) setup is as below:</DIV>
<DIV> file reader -></DIV>
<DIV> vector gradient magnitude image filter (pca off)
-></DIV>
<DIV> watershed (level=0.2, threshold=0.0) -></DIV>
<DIV> relabel component</DIV>
<DIV> </DIV>
<DIV>p.s. The black regions in the outputs are colormap problems and not a
watershed issue. =)</DIV>
<DIV> </DIV>
<DIV>Thanks</DIV>
<DIV>Albert</DIV>
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