plustek: Canon LiDE 20. Partial Success
Subject:
Re: Canon LiDE 20. Partial Success
From:
Alain Wenmaekers ####@####.####
Date:
4 Feb 2003 19:50:43 -0000
Message-Id: <200302042040.58992.alain.wenmaekers@skynet.be>
> I will play a bit further with these options, trying to find correct levels
> for my scanner (and hopefully for most other LiDE 20 owners).
I have fiddled a few hours with these settings. So far, these are the optimal
settings that I found (caution, a better combination may exist):
--------------------------
option red_gain 1
option green_gain 37
option blue_gain 32
---------------------------
With these options, I'm able to see the difference between the colors
I have a testscan with some magazine pieces with colors in it:
The original, with sane set to the default settings:
http://users.skynet.be/bluedigit/sanedefault.jpg
The one with the changed settings (still ugly, but the different colors are
visible):
http://users.skynet.be/bluedigit/corrected.jpg
The reference scan with "vuescan" (colors are much softer):
http://users.skynet.be/bluedigit/vuescan.jpg
Scans under Windows/canon software look OK, but they are far worse than the
ones from vuescan.
What do the "gain" options mean actually? And how do they work? (so it's
easier to find an optimal setting :-)
Grtz
Alain
