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Re: Chain-Link Algorithm for Perimeter [message #30385 is a reply to message #30322]

Fri, 26 April 2002 13:58

gutmann
Messages: 11
Registered: December 2001

Junior Member

heh, I wrote something to remove the boundary pixels following a
contour when I was first learning IDL. You're welcome to it though it
comes with all the standard caveats about my not being responsible for
it eating your machine and kicking you out of the house.

(warning lots of for loops ahead)
http://aster.colorado.edu/tmp/edgeRemove.pro

I think it follows a very similar algorithm, I don't think I've ever
come across a shape it died on (as long as two shapes aren't
touching). I originally wrote c-code to trace sand grain boundaries
so it saw some pretty ugly shapes, this is modified from the c-code
but it should be equally robust to odd boundaries.

Ethan

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[Message index]

		Re: Chain-Link Algorithm for Perimeter By: Ted Cary on Sat, 20 April 2002 17:01
		Re: Chain-Link Algorithm for Perimeter By: David Fanning on Fri, 19 April 2002 13:41
		Re: Chain-Link Algorithm for Perimeter By: dmarshall on Fri, 19 April 2002 13:22
		Re: Chain-Link Algorithm for Perimeter By: gutmann on Fri, 26 April 2002 13:58

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