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Posted: 2006-05-17T20:34:38-07:00
by anthony
This is a big problem with no simple universal solution.

Basically the thin border is colors whcih are not quite the same as the background color.

For a demonstration of this problem see..
http://www.polyvore.com/images.html
Whcih shows most of the general problems seen.

Currently the only solutions IM Examples details are at
http://www.cit.gu.edu.au/~anthony/graph ... k_creation

Another solution involving gradient colors to generate semi-transparent pixels is also being looked at.