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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="Stephen Williams (steve@icarus.com)">
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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="Sat Dec 9 22:28:16 2000" -->
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<!-- subject="Re: Which scanners REALLY provide 36 bit output? HP?" -->
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<STRONG>From:</STRONG> Stephen Williams (<A HREF="mailto:steve@icarus.com?Subject=Re:%20Which%20scanners%20REALLY%20provide%2036%20bit%20output?%20HP?&In-Reply-To=<200012100630.WAA25587@icarus.com>"><EM>steve@icarus.com</EM></A>)<BR>
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<STRONG>Date:</STRONG> Sat Dec 09 2000 - 22:30:33 PST
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<LI><STRONG>Next message:</STRONG> <A HREF="0094.html">Jason Aten: "microtek v6: light turns off on during scanning!"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0092.html">Dave Hill: "Re: xsane-0.65 released"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0073.html">Steve Underwood: "Re: Which scanners REALLY provide 36 bit output? HP?"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0123.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="0071.html">Steve Underwood: "Re: Which scanners REALLY provide 36 bit output? HP?"</A>
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<A HREF="mailto:steveu@coppice.org?Subject=Re:%20Which%20scanners%20REALLY%20provide%2036%20bit%20output?%20HP?&In-Reply-To=<200012100630.WAA25587@icarus.com>">steveu@coppice.org</A> said:
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<BR>
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<EM>> Not at all. The engineering of the eye has the same constraints as any
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</EM><BR>
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<EM>> engineering humans do. The eye uses three sensor channels.
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</EM><BR>
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<P>Not exactly. The eye actually has RGB *and luminance* sensors. That is,
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<BR>
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three narrow spectrums and one broad spectrum. The R G and B sensors overlap
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<BR>
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in their sensitivity range, but in low light, peripheral vision or during
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<BR>
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hypoxia the color sensors are not available at all.
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<BR>
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<P>There are other complexities, but you probably know that.
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<BR>
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<P>At any rate, my point is that there is more to archiving an image of a
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<BR>
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precious document then the depth of RGB intensities.
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<BR>
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<PRE>
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--
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Steve Williams "The woods are lovely, dark and deep.
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<A HREF="mailto:steve@icarus.com?Subject=Re:%20Which%20scanners%20REALLY%20provide%2036%20bit%20output?%20HP?&In-Reply-To=<200012100630.WAA25587@icarus.com>">steve@icarus.com</A> But I have promises to keep,
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<A HREF="mailto:steve@picturel.com?Subject=Re:%20Which%20scanners%20REALLY%20provide%2036%20bit%20output?%20HP?&In-Reply-To=<200012100630.WAA25587@icarus.com>">steve@picturel.com</A> and lines to code before I sleep,
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<A HREF="http://www.picturel.com">http://www.picturel.com</A> And lines to code before I sleep."
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<P><P><P>--
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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=<200012100630.WAA25587@icarus.com>">majordomo@mostang.com</A>
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<LI><STRONG>Next message:</STRONG> <A HREF="0094.html">Jason Aten: "microtek v6: light turns off on during scanning!"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0092.html">Dave Hill: "Re: xsane-0.65 released"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0073.html">Steve Underwood: "Re: Which scanners REALLY provide 36 bit output? HP?"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0123.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="0071.html">Steve Underwood: "Re: Which scanners REALLY provide 36 bit output? HP?"</A>
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This archive was generated by <A HREF="http://www.hypermail.org/">hypermail 2b29</A>
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