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68 wiersze
2.8 KiB
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<!-- received="Sun Aug 31 02:44:18 1997 MST" -->
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<!-- sent="Sun, 31 Aug 1997 10:48:02 +0200 (MET DST)" -->
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<!-- name="Oliver.Rauch@Wolfsburg.DE" -->
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<!-- email="Oliver.Rauch@Wolfsburg.DE" -->
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<!-- subject="umax-backend" -->
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<!-- id="199708310848.KAA02461@Babylon5.wolfsburg.de" -->
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<!-- inreplyto="" -->
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<title>sane-devel: umax-backend</title>
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<h1>umax-backend</h1>
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<a href="mailto:Oliver.Rauch@Wolfsburg.DE"><i>Oliver.Rauch@Wolfsburg.DE</i></a><br>
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<i>Sun, 31 Aug 1997 10:48:02 +0200 (MET DST)</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#108">[ date ]</a><a href="index.html#108">[ thread ]</a><a href="subject.html#108">[ subject ]</a><a href="author.html#108">[ author ]</a>
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<li> <b>Next message:</b> <a href="0109.html">Didier Carlier: "Nikon LS-20"</a>
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<li> <b>Previous message:</b> <a href="0107.html">Michael Ritzert: "Re: Backtracking in color scanning"</a>
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<!-- nextthread="start" -->
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<li> <b>Next in thread:</b> <a href="0110.html">David Mosberger-Tang: "Re: umax-backend"</a>
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<li> <b>Reply:</b> <a href="0110.html">David Mosberger-Tang: "Re: umax-backend"</a>
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</ul>
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<!-- body="start" -->
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Hello David, hello Tristan, hello others<br>
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<p>
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I want so support the 30-bit mode of the UMAX Astra-<br>
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and the UMAX High-End scanners.<br>
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<p>
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That can be devided into two parts, from which only the first<br>
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is important at the moment:<br>
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<p>
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1) Gamma correction with 10 bits input and 8 bits output<br>
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( = 1024 bytes instead of 256 bytes )<br>
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<p>
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2) a real 10 bits per pixel (greyscale) and 30 bits per pixel (rgb)<br>
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support by sane<br>
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=> 2 bytes per pixel (greyscale) and 6 bytes per pixel (rgb)<br>
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and 10 to 10 bits gamma data support<br>
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<p>
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I don't know if the second part really is necessary at all.<br>
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But 10 to 8 bits gamma data is something that must be<br>
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done in future.<br>
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<p>
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So my question is:<br>
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Is it planed to support more than 8 bits per pixel for gamma data?<br>
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If not, I could calculate the missing values in the umax-driver,<br>
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but that's not a good way to do that, I think!<br>
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<p>
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Bye<br>
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Oliver<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.azstarnet.com/~axplinux/sane/">http://www.azstarnet.com/~axplinux/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="0109.html">Didier Carlier: "Nikon LS-20"</a>
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<li> <b>Previous message:</b> <a href="0107.html">Michael Ritzert: "Re: Backtracking in color scanning"</a>
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<!-- nextthread="start" -->
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<li> <b>Next in thread:</b> <a href="0110.html">David Mosberger-Tang: "Re: umax-backend"</a>
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<li> <b>Reply:</b> <a href="0110.html">David Mosberger-Tang: "Re: umax-backend"</a>
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<!-- reply="end" -->
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</ul>
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