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<H1>Re: Which scanners REALLY provide 36 bit output? HP?</H1>
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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=&lt;200012100630.WAA25587@icarus.com&gt;"><EM>steve@icarus.com</EM></A>)<BR>
<STRONG>Date:</STRONG> Sat Dec 09 2000 - 22:30:33 PST
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<A HREF="mailto:steveu@coppice.org?Subject=Re:%20Which%20scanners%20REALLY%20provide%2036%20bit%20output?%20HP?&In-Reply-To=&lt;200012100630.WAA25587@icarus.com&gt;">steveu@coppice.org</A> said:
<BR>
<EM>&gt; Not at all. The engineering of the eye has the same constraints as any
</EM><BR>
<EM>&gt; engineering humans do. The eye uses three sensor channels.
</EM><BR>
<P>Not exactly. The eye actually has RGB *and luminance* sensors. That is,
<BR>
three narrow spectrums and one broad spectrum. The R G and B sensors overlap
<BR>
in their sensitivity range, but in low light, peripheral vision or during
<BR>
hypoxia the color sensors are not available at all.
<BR>
<P>There are other complexities, but you probably know that.
<BR>
<P>At any rate, my point is that there is more to archiving an image of a
<BR>
precious document then the depth of RGB intensities.
<BR>
<PRE>
--
Steve Williams &quot;The woods are lovely, dark and deep.
<A HREF="mailto:steve@icarus.com?Subject=Re:%20Which%20scanners%20REALLY%20provide%2036%20bit%20output?%20HP?&In-Reply-To=&lt;200012100630.WAA25587@icarus.com&gt;">steve@icarus.com</A> But I have promises to keep,
<A HREF="mailto:steve@picturel.com?Subject=Re:%20Which%20scanners%20REALLY%20provide%2036%20bit%20output?%20HP?&In-Reply-To=&lt;200012100630.WAA25587@icarus.com&gt;">steve@picturel.com</A> and lines to code before I sleep,
<A HREF="http://www.picturel.com">http://www.picturel.com</A> And lines to code before I sleep.&quot;
<P><P><P>--
Source code, list archive, and docs: <A HREF="http://www.mostang.com/sane/">http://www.mostang.com/sane/</A>
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=&lt;200012100630.WAA25587@icarus.com&gt;">majordomo@mostang.com</A>
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