plustek: Canoscan LiDE 20 stripes and bad pic quality
Subject:
Re: Canoscan LiDE 20 stripes and bad pic quality
From:
"Jaeger, Gerhard" ####@####.####
Date:
15 Jan 2003 17:42:13 -0000
Message-Id: <18YrPo-2CVxMuC@fmrl11.sul.t-online.com>
Hi,
I know that there are still problems on those CanonScan devices.
I'm currently working on that and hope to fix it soon...
Stay tuned guys, maybe one of you may find a solution...
Cheers
Gerhard
On Wednesday, 15. January 2003 01:22, Scott Campbell wrote:
> On January 14, 2003 17:13, Soeren Sonnenburg wrote:
> > Hi!
> >
> > Although the recent 45-TEST drivers seem to work ok with this scanner, I
> > get pretty poor results in comparison to the windows drivers:
> >
> > - the image contains vertical stripes
> > - it seems to be lower resolution
> > - it is dizzy - not so clear/sharp
> >
> > I put two windows scanned images (300dpi and 600dpi) and one scanned in
> > linux (1200dpi - lower resolutions look much worse) on some web address:
> >
> > Please have a look at this:
> >
> > http://www.nn7.de/sane/win-300dpi.jpg
> > http://www.nn7.de/sane/win-600dpi.jpg
> > http://www.nn7.de/sane/linux-1200dpi.jpg
> >
> > Any ideas why it looks so bad ?
> >
> > Best,
> > Soeren.
>
> Yeah, I'm getting similar behaviour on my LIDE20, w/ 45-1-TEST (just got it
> all compiled yesterday).
>
> In binary or any gray modes, with previews or full scans, of almost any
> size subject, I get the verticle stripes, at least at 200 or 300 dpi (the
> only modes tested so far). 8 bit color or high color seem to be fine at
> those dpi, but I have to play around with the brightness/contrast in xsane
> to get decent results. scanimage without any fancy parameters produces
> somewhat washed out scans.
>
> The binary/gray stripes tend to be on the right side, but can cover the
> whole image.
>
> This is a "mostly working" driver though, so I'll take what I can get. But,
> I'll be happy to narrow things down a bit and see what's reproducible.
>
> Cheers,
> Scott
>
