Re: Backtracking in color scanning

Mathias Weigt (p5iba@medchem2.pharmazie.uni-halle.de)
Mon, 1 Sep 1997 09:54:10 -0600

Servus !

> Well, I also have this problem, so I join this thread, too.
>
> >I have a Pentium 200 with 96mb RAM and the scanner is on its own Adaptec
> >1540 controller. The buffer is 128K and my scanning is very slow and does
> >the backtracking. Turning backtrack has no substantial speedup and the
> >colors are completely screwed up.
>
> The color problem might be solved by compiling with --disable-ld-fix.
>
> I have the Mustek MFS-12000SP. It's connected to an Adaptec AHA 1542CF as the
> only device. The harddisks are connected to an AHA 2940UW. The computer is an
> PPro 200, 64MB RAM. Buffer size is 127.5 kB. Sane version 0.62.
>
> >Grayscale is great, and fast. Color under Windows is fast too. Of
> >course, now I cannot use it under Windows because the TWAIN driver
> >won't support my Adaptec.
>
> It actually does. I only had to load ASPI4DOS.??? in my config.sys and
> reinstall the TWAIN driver and it worked fine. It only brought the processor
> to near 100% load under Win95...
> If it doesn't work with your version of the TWAIN driver or if you don't
> have ASPI4DOS, feel free to contact me for more information.

I don't want to join this ! I have 3 pass Scanner and this piece should be
faster than 1 pass scanners ? Also I made different experiences under win95
and twain. Sane (not the fastest scanning program under linux) is twice as fast
as the twain driver. But I must say scanning with sane gets real fun after
upgrading to 64 MB RAM ;-).

Something different: Can somebody with a mustek 3-pass Scanner confirm or deny
the problem with the "custom gamma table" option ? With this option selected
the system freezes after starting the scan :-(.

-- 
Mathias Weigt 
p5iba@medchem2.pharmazie.uni-halle.de

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