kopia lustrzana https://gitlab.com/sane-project/website
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67 wiersze
3.0 KiB
HTML
<!-- received="Wed May 12 03:02:14 1999 PDT" -->
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<!-- sent="Wed, 12 May 1999 13:02:32 +0300" -->
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<!-- name="Milon Firikis" -->
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<!-- email="milonf@ariadne-t.gr" -->
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<!-- subject="Re: [Announce] WinSANE 0.1.0.0 Release" -->
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<!-- inreplyto="[Announce] WinSANE 0.1.0.0 Release" -->
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<title>sane-devel: Re: [Announce] WinSANE 0.1.0.0 Release</title>
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<h1>Re: [Announce] WinSANE 0.1.0.0 Release</h1>
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<b>Milon Firikis</b> (<a href="mailto:milonf@ariadne-t.gr"><i>milonf@ariadne-t.gr</i></a>)<br>
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<i>Wed, 12 May 1999 13:02:32 +0300</i>
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<p>
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<ul>
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<li> <b>Messages sorted by:</b> <a href="date.html#106">[ date ]</a><a href="index.html#106">[ thread ]</a><a href="subject.html#106">[ subject ]</a><a href="author.html#106">[ author ]</a>
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<li> <b>Next message:</b> <a href="0107.html">Pablo Bendersky: "SANE standards"</a>
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<li> <b>Previous message:</b> <a href="0105.html">Ewald R. de Wit: "Re: [Announce] WinSANE 0.1.0.0 Release"</a>
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<li> <b>Maybe in reply to:</b> <a href="0070.html">Brian Macy: "[Announce] WinSANE 0.1.0.0 Release"</a>
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<!-- nextthread="start" -->
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<li> <b>Next in thread:</b> <a href="0108.html">Matthias Fleischer: "Re: [Announce] WinSANE 0.1.0.0 Release"</a>
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<!-- reply="end" -->
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</ul>
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<!-- body="start" -->
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Matthias Fleischer wrote:<br>
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<i>> Maybe I'm just nitpicking or simply don't get it -</i><br>
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<i>> but shouldn't this actually read:</i><br>
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<i>> </i><br>
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<p>
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No you don't. I actually this question had occured to me also...<br>
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<p>
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<i>> ...a 4 bit sample could be scaled by a factor of _seventeen_...</i><br>
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<i>> </i><br>
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<i>> or maybe</i><br>
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<i>> </i><br>
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<i>> e.g., a 4 bit sample could be shifted left by 4 bit to represent a</i><br>
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<i>> sample value of depth 8 or even better multiplied by a factor of</i><br>
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<i>> 0x11 (17) so that white pixels still map to white pixels (15*17=255)</i><br>
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<i>> </i><br>
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<p>
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Err?<br>
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<p>
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white pixel xxxx 0000 <<4 --> 0000 0000 (0)<br>
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<p>
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White pixels (0) are still white pixels, while black pixels have the<br>
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value of (240) since shifting left by 4 is like multiplying by 16. The<br>
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only reason to multiply by 17 is to use the whole dynamical range<br>
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(0-255) and is not related with the whiteness of pixels AFAIK.<br>
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<p>
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MF<br>
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<p>
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<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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</pre>
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<!-- body="end" -->
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<p>
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<ul>
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<!-- next="start" -->
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<li> <b>Next message:</b> <a href="0107.html">Pablo Bendersky: "SANE standards"</a>
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<li> <b>Previous message:</b> <a href="0105.html">Ewald R. de Wit: "Re: [Announce] WinSANE 0.1.0.0 Release"</a>
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<li> <b>Maybe in reply to:</b> <a href="0070.html">Brian Macy: "[Announce] WinSANE 0.1.0.0 Release"</a>
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<!-- nextthread="start" -->
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<li> <b>Next in thread:</b> <a href="0108.html">Matthias Fleischer: "Re: [Announce] WinSANE 0.1.0.0 Release"</a>
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<!-- reply="end" -->
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</ul>
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