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Date: Sun, 23 May 2010 16:03:18 +0200
From: Oliver Geisen <oliver.geisen@kreisbote.de>
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To: tiff@lists.maptools.org
Subject: [Tiff] How to descreen bilevel TIFFs into grayscale?
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Hello,

i have bilevel TIFFs in high resolution. The contain screeningpatterns 
which represents gray level, just like you look at printed pictures with 
a magnifier glass.

Now i want to calc previews from that. I tried to median the bits, but 
it still has artefacts on it. Is there a tool/way to descreen the 
rastered data to get better results?

Oliver
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