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79 wiersze
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<!-- received="Wed Jun 23 14:45:30 1999 PDT" -->
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<!-- sent="Wed, 23 Jun 1999 23:46:26 +0200" -->
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<!-- name="Oliver Rauch" -->
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<!-- email="oliver.rauch@Wolfsburg.DE" -->
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<!-- subject="Re: Fix for grayscale scans with gamma < 1.0" -->
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<!-- inreplyto="Fix for grayscale scans with gamma < 1.0" -->
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<title>sane-devel: Re: Fix for grayscale scans with gamma < 1.0</title>
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<h1>Re: Fix for grayscale scans with gamma < 1.0</h1>
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<b>Oliver Rauch</b> (<a href="mailto:oliver.rauch@Wolfsburg.DE"><i>oliver.rauch@Wolfsburg.DE</i></a>)<br>
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<i>Wed, 23 Jun 1999 23:46:26 +0200</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#169">[ date ]</a><a href="index.html#169">[ thread ]</a><a href="subject.html#169">[ subject ]</a><a href="author.html#169">[ author ]</a>
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<li> <b>Next message:</b> <a href="0170.html">Jeffrey Thompson: "UMAX Vendors"</a>
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<li> <b>Previous message:</b> <a href="0168.html">Oliver Rauch: "Re: Fix for grayscale scans with gamma < 1.0"</a>
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<li> <b>Maybe in reply to:</b> <a href="0154.html">David Fox: "Fix for grayscale scans with gamma < 1.0"</a>
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</ul>
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Nick Lamb wrote:<br>
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<p>
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<i>> On Wed, 23 Jun 1999, Oliver Rauch wrote:</i><br>
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<i>></i><br>
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<i>> > You can change the scanner brightness and contrast and do a new preview</i><br>
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<i>> > scan and see the changes in the histogram.</i><br>
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<i>> > I think about adding support for a preview scan with more than 8/24 bits/pixel> but I am not sure if that really is necessary.</i><br>
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<i>></i><br>
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<i>> One thing which would be nice, and wasn't there when I last looked...</i><br>
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<i>> In HP's Windows software, preview is always done in Full Color (which is</i><br>
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<i>> still low-enough bit rate at preview resolution). Then it is resampled</i><br>
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<i>> to match the settings chosen by the user...</i><br>
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<i>></i><br>
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<i>> This means that when I realise I picked "Grey" instead of "Color", I can</i><br>
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<i>> just change the setting, and the preview updates immediately. In XSane</i><br>
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<i>> I must wait for another preview scan...</i><br>
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<i>></i><br>
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<p>
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That has good and bad points.<br>
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The image might look a bit differnt if you convert a color image<br>
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to a gray image by software compared to a scanned gray image.<br>
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<p>
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But I will add an option that lets the user selecd:<br>
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- preview in selected scan mode<br>
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- grayscale preview<br>
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- color preview<br>
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<p>
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May be next month!<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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<p>
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<pre>
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--
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EMAIL: <a href="mailto:Oliver.Rauch@Wolfsburg.DE">Oliver.Rauch@Wolfsburg.DE</a>
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WWW: <a href="http://www.wolfsburg.de/~rauch">http://www.wolfsburg.de/~rauch</a>
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<p>
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<p>
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<p>
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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="0170.html">Jeffrey Thompson: "UMAX Vendors"</a>
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<li> <b>Previous message:</b> <a href="0168.html">Oliver Rauch: "Re: Fix for grayscale scans with gamma < 1.0"</a>
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<li> <b>Maybe in reply to:</b> <a href="0154.html">David Fox: "Fix for grayscale scans with gamma < 1.0"</a>
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<!-- nextthread="start" -->
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<!-- reply="end" -->
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</ul>
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