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<DIV><FONT face=Arial size=2>Hello, bothering you guys again,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2> In my segmentation problem I
have to segment a structure which has on one side a high contrast boundary and
on the</FONT></DIV>
<DIV><FONT face=Arial size=2>other side a low contrast boundary. I m using
GeodesicActiveContours to do the segmentation, so I need to supply a feature
image. This I construct by taking the sigmoid of the gradient
magnitude. But, because of the difference in contrast, the features one
one side are much stronger (wider and darker) than on the other side. This
causes leaks, on the low contrast side, if I let the GeodesicActiveContours run
long enough for the levelset to reach the edge on the high contrast
side.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2> So should I adjust the histogram
so that there is equal contrast (but what will happen to the noise). Or
are there better</FONT></DIV>
<DIV><FONT face=Arial size=2> solutions?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Thanks,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Toon.</FONT></DIV></BODY></HTML>