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uniform expansion [message #41332] Fri, 08 October 2004 00:07
mruschin is currently offline  mruschin
Messages: 3
Registered: November 2003
Junior Member
Hello,
Say I have a random 2D shape (a blob) with an irregular border (all
pixel values equal to one). What I want to do is uniformly expand it
in all directions such that it's increased by a constant integer
number of pixels all around the perimeter. Subtraction of the
original shape from the new one should yield a thin border with a
constant width corresponding to the # of pixels the object was
enlarged by.
Does anyone have any suggestions... preferrably of an IDL nature?

Regards,
Mark

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