Re: make backend work on usb

From: Oliver Neukum (Oliver.Neukum@lrz.uni-muenchen.de)
Date: Sun Feb 06 2000 - 15:10:07 PST

  • Next message: msitkows@au1.ibm.com: "Re: make backend work on usb"

    Am Son, 06 Feb 2000 schrieben Sie:
    > Oliver Neukum <Oliver.Neukum@lrz.uni-muenchen.de> on 07/02/2000 05:32:15
    >
    > >>The scanner reports two sources of data. I am not sure
    > >>whether I am reading from the correct one, or even if I need to do some
    > >>weirder stuff.
    > ......
    >
    > >>I am going to try to read from the other source, unless I get better
    > ideas.
    > >>I'd appreciate links to tools. I know C but neither USB nor scanners.
    > >>Please, please suggestions !?
    >
    > I've been told that the reason you're seeing this, is that HP scanners use
    > two interpolated sources of scan data, to double the resolution (this could
    > be wrong, but it makes sense...).

    Is that true for Microtek, too ?

    > If this is the case, then you need to read both data streams, and
    > interpolate the pixels - otherwise, you'll get a picture which looks almost
    > correct - but not quite...

    But what would I want to read an interpolated stream for?
    In addition I get no data at all.
    Could you please elaborate ?
    >
    > --
    > Hope this helps,
    > Mark
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