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imagemagick convert -gamma not working

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JohnF

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Aug 24, 2009, 10:50:46 AM8/24/09
to
Briefly,
convert -density 120 -gamma 0.5 -trim -transparent "#FFFFFF"
dvips.ps convert.gif
produces exactly the same image byte-for-byte (diff reports
no differences) regardless of -gamma value, 0.5 or any other
value.

The problem's more fully described at
http://www.imagemagick.org/discourse-server/viewtopic.php?f=1&t=14477
which points you to sample .ps and converted .gif (and .png) images
(see the last post for those pointers). But nobody suggested
a solution that worked. I'd appreciate any further ideas.
Thanks a lot,
--
John Forkosh ( mailto: j...@f.com where j=john and f=forkosh )

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