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<TITLE>sane-devel: Re: Which scanners REALLY provide 36 bit output? HP?</TITLE>
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<META NAME="Author" CONTENT="Ian Stirling (root@mauve.demon.co.uk)">
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<META NAME="Subject" CONTENT="Re: Which scanners REALLY provide 36 bit output? HP?">
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<H1>Re: Which scanners REALLY provide 36 bit output? HP?</H1>
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<!-- received="Thu Dec 14 10:40:32 2000" -->
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<!-- subject="Re: Which scanners REALLY provide 36 bit output? HP?" -->
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<STRONG>From:</STRONG> Ian Stirling (<A HREF="mailto:root@mauve.demon.co.uk?Subject=Re:%20Which%20scanners%20REALLY%20provide%2036%20bit%20output?%20HP?&In-Reply-To=<200012082001.UAA20970@mauve.demon.co.uk>"><EM>root@mauve.demon.co.uk</EM></A>)<BR>
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<STRONG>Date:</STRONG> Fri Dec 08 2000 - 12:01:31 PST
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<LI><STRONG>Next message:</STRONG> <A HREF="0161.html">Jeremy Anderson: "problems compiling SnapScan USB in pre-1.0.4"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0159.html">Bob Washburne: "Re: Which scanners REALLY provide 36 bit output? HP?"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0062.html">Bob Washburne: "Re: Which scanners REALLY provide 36 bit output? HP?"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0059.html">Steve Underwood: "Re: Which scanners REALLY provide 36 bit output? HP?"</A>
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<P>
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<EM>> Paul Floyd wrote:
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</EM><BR>
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<EM>> > Quoting Bob Washburne <<A HREF="mailto:rcwash@concentric.net?Subject=Re:%20Which%20scanners%20REALLY%20provide%2036%20bit%20output?%20HP?&In-Reply-To=<200012082001.UAA20970@mauve.demon.co.uk>">rcwash@concentric.net</A>>:
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</EM><BR>
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<snip>
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<BR>
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<EM>> My application is archival. I have a collection of old (about a
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</EM><BR>
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<EM>> century) documents and photos. They will not be around much longer.
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</EM><BR>
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<snip>
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<BR>
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<EM>> The images are of borderline quality. Text is sometimes difficult to
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</EM><BR>
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<EM>> read. Photos are blurred or smeared. Everything has taken on the
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</EM><BR>
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<EM>> patina of age. There are some effective software packages out there for
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</EM><BR>
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<EM>> image enhancement. They can remove red-eye, interpret text and
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</EM><BR>
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<EM>> generally clean things up. Thirty, fifty years from now I'll bet that
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</EM><BR>
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<EM>> they will perform magic - removing coffee stains, filling in destroyed
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</EM><BR>
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<EM>> areas, sharpening a blurred photo.
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</EM><BR>
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<P>Not very likely.
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<BR>
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What's really needed is yet more info.
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<BR>
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A scanner that can do RGB + several IR bands would really help, as it can
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<BR>
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pick up data that's not obsucured by stains, rather than trying to
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<BR>
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see through the stain.
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<BR>
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<P>Seeing what the real resolution that can be got isn't to hard.
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<BR>
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A human hair is about 0.1mm in diameter.
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<BR>
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Tie a knot of several hairs, and see how well it resolves.
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<BR>
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<P><P><PRE>
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--
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Source code, list archive, and docs: <A HREF="http://www.mostang.com/sane/">http://www.mostang.com/sane/</A>
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To unsubscribe: echo unsubscribe sane-devel | mail <A HREF="mailto:majordomo@mostang.com?Subject=Re:%20Which%20scanners%20REALLY%20provide%2036%20bit%20output?%20HP?&In-Reply-To=<200012082001.UAA20970@mauve.demon.co.uk>">majordomo@mostang.com</A>
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</PRE>
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<!-- next="start" -->
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<LI><STRONG>Next message:</STRONG> <A HREF="0161.html">Jeremy Anderson: "problems compiling SnapScan USB in pre-1.0.4"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0159.html">Bob Washburne: "Re: Which scanners REALLY provide 36 bit output? HP?"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0062.html">Bob Washburne: "Re: Which scanners REALLY provide 36 bit output? HP?"</A>
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<!-- nextthread="start" -->
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0059.html">Steve Underwood: "Re: Which scanners REALLY provide 36 bit output? HP?"</A>
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<EM>
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This archive was generated by <A HREF="http://www.hypermail.org/">hypermail 2b29</A>
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: <EM>Thu Dec 14 2000 - 10:51:54 PST</EM>
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