jhall@UU.NET (Jeremy Hall) writes:
> WAY KULE!
>
> I haven't tried my driver with super-recent kernel, I'm still running
> test8. What version of sane are you running?
1.0.3
>
> Since I am a visually impaired person, perhaps the stripes don't interfeer
> with OcR.
I would think they would; when I print out a scanned image with the
stripes, about every 10th letter is completely illegible.
> I could scan a page with my scanner and provide the image for your
> examination.
Sure. Feel free to email an image to me, or put it somewhere
publicly accessible, and I'll see if it looks at all similar to what
I'm seeing.
> Is this in colour or gray?
I see the strips both when scanning in color, greyscale, or line-art
mode. Of course, they're grey or black-and-white in the other modes.
> I have noticed that the scanner behaves quite differently when
> trying to scan at say 600dpi instead of 300dpi, sane's defaults try
> to produce a horridly LARGE image, trying to produce a 24-bit colour
> image.
I'll play with that some more; I tried different resolutions, but
mostly tested with the defaults.
>
> I've been mostly scanning gray 300dpi images for OCR purposes.
>
> I have considered the possibility that scsi errors may not be getting back
> to the scsi handler, but I find this difficult to understand why since the
> code seems to read correctly. Have you tried running with an USB analyzer
> both in Linux and Windoze to determine if they chat differently?
I have not tried that; this is the first time I've ever tried to use a
USB device. I'll try to find a good analyzer and see if I can make
any headway with it.
> Basically what happens is the following sequence:
>
> We send a command to the OUT endpoint. We may then retrieve data or the
> status handler may be called. Depending on the results of the status
> handler, we may or may not send back an error to the scsi layer.
>
> There may be some race conditions not yet realized, this is why testing is
> suggested.
Thanks for your help!
-----ScottG.
-- Source code, list archive, and docs: http://www.mostang.com/sane/ To unsubscribe: echo unsubscribe sane-devel | mail majordomo@mostang.com
This archive was generated by hypermail 2b29 : Wed Dec 27 2000 - 09:31:03 PST