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68 wiersze
3.4 KiB
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<!-- received="Wed May 6 14:37:52 1998 PDT" -->
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<!-- sent="Wed, 6 May 1998 21:15:56 +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="Re: [umax] Can't use 10-bit scan: "preview cannot handle depth 16"" -->
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<!-- id="199805061915.VAA14109@Babylon5.wolfsburg.de" -->
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<!-- inreplyto="XFMail.980506104219.dburr@POBoxes.com" -->
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<title>sane-devel: Re: [umax] Can't use 10-bit scan: "preview cannot handle depth 16"</title>
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<h1>Re: [umax] Can't use 10-bit scan: "preview cannot handle depth 16"</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>Wed, 6 May 1998 21:15:56 +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#65">[ date ]</a><a href="index.html#65">[ thread ]</a><a href="subject.html#65">[ subject ]</a><a href="author.html#65">[ author ]</a>
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<li> <b>Next message:</b> <a href="0066.html">Oliver.Rauch@Wolfsburg.DE: "Re: [umax] what options to use to get best results?"</a>
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<li> <b>Previous message:</b> <a href="0064.html">Hugo van der Kooij: "Re: Coolscan not detected"</a>
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<li> <b>Next in thread:</b> <a href="0070.html">Paul D. Robertson: "Re: [umax] Can't use 10-bit scan: "preview cannot handle depth 16""</a>
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<li> <b>Reply:</b> <a href="0070.html">Paul D. Robertson: "Re: [umax] Can't use 10-bit scan: "preview cannot handle depth 16""</a>
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</ul>
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<!-- body="start" -->
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Hi,<br>
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<p>
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<i>> I am trying to use the "10-bit scan" option in xscanimage. However, it is</i><br>
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<i>> not working. When I try to acquire a Preview image, the scanner whirs,</i><br>
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<i>> then I get the error:</i><br>
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<i>> </i><br>
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<i>> Error: Preview cannot handle depth 16.</i><br>
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<i>> </i><br>
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<i>> But I am running my Xserver in 32bpp mode!</i><br>
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<i>> </i><br>
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<i>> Is this a known problem? Is there a fix available?</i><br>
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<p>
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There is no frontend that can handle more then 8 bits per color.<br>
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The umax-backend already supports this function, but you can not<br>
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use it because there is no other software that can handle it.<br>
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<p>
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But if you use gamma correction, the image is scanned with 10 bits/color<br>
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and converted with a 10 to 8 bit gamma table, so you get improvement<br>
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by the 10 bit mode of your scanner.<br>
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<p>
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There is no graphic card that can handle more than 8 bits/color<br>
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(= 24 bits/pixel), so you don't have a need of it. The only<br>
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sense of more than 8 bits/color is if you like to do color manipulation<br>
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after the scan.<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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</pre>
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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="0066.html">Oliver.Rauch@Wolfsburg.DE: "Re: [umax] what options to use to get best results?"</a>
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<li> <b>Previous message:</b> <a href="0064.html">Hugo van der Kooij: "Re: Coolscan not detected"</a>
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<!-- nextthread="start" -->
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<li> <b>Next in thread:</b> <a href="0070.html">Paul D. Robertson: "Re: [umax] Can't use 10-bit scan: "preview cannot handle depth 16""</a>
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<li> <b>Reply:</b> <a href="0070.html">Paul D. Robertson: "Re: [umax] Can't use 10-bit scan: "preview cannot handle depth 16""</a>
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<!-- reply="end" -->
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</ul>
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