Subject:
Re: [ANN] Plustek Backend update V0.45-1
From:
Marc Lavergne ####@####.####
Date:
11 Jan 2003 22:32:37 -0000
Message-Id: <20030111222412.61077.qmail@web10704.mail.yahoo.com>
I saw the same "light left on" behavior with the
1220U.
Cheers,
Marc
--- Gene Heskett ####@####.#### wrote:
> On Saturday 11 January 2003 10:05, Jaeger, Gerhard
> wrote:
> Announcing a 45-1 release.
>
> I unpacked it over the old 45 in
> sane-backends-1.0.9, did a make
> clean && make && make install, which apparently went
> well.
>
> Fireing up xsane from the icon, I had it do a
> preview, which ran as
> far as the end of the forward travel of the
> carriage, at which time
> it cleared Olivers logo from the preview window, and
> the whole
> thing went away about 1 second later. The carriage
> went back home
> as it should have, but the lamp was left on.
>
> Running it from a shell, it did the same thing, and
> reported a
> "segfault" to the shell window as it exited.
>
> The epson iscan-1.40 derived backend still works ok
> though.
>
> I'm going to do another make clean and get rid of
> the config.cache
> etc stuffs and try it again, as I've re-arranged the
> order in
> ld.so.conf a bit since that configure was done.
>
> Humm, that might have done something, in 2 restarts
> it hasn't
> crashed yet.
>
> However, the returned image seems to be quite dark
> in the 600 dpi
> mode, with the raw histogram only occupying about
> the left hand 25%
> of that window. Also, all the britness and contrast
> sliders for
> both overall and rgb are pegged at the right border
> of the slider,
> and labeled 100 at that point. The initial image
> doesn't look that
> bad in the preview window, but 1/2 second later when
> the autoadjust
> kicks in, the image drops to be dark enough to be
> obvious. It can
> only be rescued by the options window britness
> slider being set for
> about +4 and a new scan done.
>
> Also, the white line artifact is (hooray!) gone when
> at 600 dpi.
> However, at 300dpi, its back and the output is too
> dark as before.
> Then at 1200 dpi, the inverse appears to be true,
> I'm on the third
> scan right now with the britness slider in the
> option window now at
> -15 and its still quite a bit too bright. Not
> making too much
> progress, I'm trying -30 now. Still too bright in
> the whites, but
> the darker colors are now all black, but the
> histograms haven't
> changed. Now the contrast is set for -30 also, but
> its still too
> bright and contrasty. Final settings for a decent
> scan are
> brightness=0 and contrast = -65. So thats a bit
> off.
>
> I also tried a 2400dpi scan (can we say slow?) at
> those settings and
> it looked pretty close to the 1200 dpi result except
> its beginnng
> to look like it was jpegged a wee bit too much. Is
> this mode by
> interpolation? Even the white line artifact is
> fuzzy.
>
> Then at 150dpi, the inverse is true, the usable
> setting is +7 and
> +50. Ditto for the 75dpi setting.
>
> I don't recall this change dpi, change everything
> else as being this
> obvious before, and ISTR the main control windows
> sliders all were
> centered at 100.0 prior to this. The motor you'll
> be glad to hear
> is running very quietly, only noticable at 150 and
> 300 dpi.
>
> This is odd indeed, I went back to do one more check
> at 600dpi, and
> had to virtually zero those sliders to get a decent
> scan again. I
> think I've got ghosts or something... Should this
> not be
> repeatable?
>
> --
> Cheers, Gene
> AMD K6-III@500mhz 320M
> Athlon1600XP@1400mhz 512M
> 99.22% setiathome rank, not too shabby for a WV
> hillbilly
>
>
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