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<H1>Re: make backend work on usb</H1>
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<STRONG>From:</STRONG> <A HREF="mailto:msitkows@au1.ibm.com?Subject=Re:%20make%20backend%20work%20on%20usb&In-Reply-To=&lt;CA25687D.007BF9B7.00@d73mta01.au.ibm.com&gt;"><EM>msitkows@au1.ibm.com</EM></A><BR>
<STRONG>Date:</STRONG> Sun Feb 06 2000 - 14:30:43 PST
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Oliver Neukum &lt;<A HREF="mailto:Oliver.Neukum@lrz.uni-muenchen.de?Subject=Re:%20make%20backend%20work%20on%20usb&In-Reply-To=&lt;CA25687D.007BF9B7.00@d73mta01.au.ibm.com&gt;">Oliver.Neukum@lrz.uni-muenchen.de</A>&gt; on 07/02/2000 05:32:15
<BR>
<P><EM>&gt;&gt;The scanner reports two sources of data. I am not sure
</EM><BR>
<EM>&gt;&gt;whether I am reading from the correct one, or even if I need to do some
</EM><BR>
<EM>&gt;&gt;weirder stuff.
</EM><BR>
......
<BR>
<P><EM>&gt;&gt;I am going to try to read from the other source, unless I get better
</EM><BR>
ideas.
<BR>
<EM>&gt;&gt;I'd appreciate links to tools. I know C but neither USB nor scanners.
</EM><BR>
<EM>&gt;&gt;Please, please suggestions !?
</EM><BR>
<P>I've been told that the reason you're seeing this, is that HP scanners use
<BR>
two interpolated sources of scan data, to double the resolution (this could
<BR>
be wrong, but it makes sense...).
<BR>
If this is the case, then you need to read both data streams, and
<BR>
interpolate the pixels - otherwise, you'll get a picture which looks almost
<BR>
correct - but not quite...
<BR>
<P><PRE>
--
Hope this helps,
Mark
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