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<!-- received="Tue Aug 3 08:00:24 1999 PDT" -->
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<!-- sent="Tue, 03 Aug 1999 17:01:02 +0200" -->
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<!-- name="Oliver Rauch" -->
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<!-- email="oliver.rauch@Wolfsburg.DE" -->
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<!-- subject="Re: xsane-0.31 available" -->
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<title>sane-devel: Re: xsane-0.31 available</title>
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<h1>Re: xsane-0.31 available</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>Tue, 03 Aug 1999 17:01:02 +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#22">[ date ]</a><a href="index.html#22">[ thread ]</a><a href="subject.html#22">[ subject ]</a><a href="author.html#22">[ author ]</a>
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<li> <b>Next message:</b> <a href="0023.html">Allan Strand: "Re: Sane + FreeBSD 3.2"</a>
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<li> <b>Previous message:</b> <a href="0021.html">Oliver Rauch: "Re: Sane + FreeBSD 3.2"</a>
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<li> <b>Maybe in reply to:</b> <a href="0005.html">Oliver Rauch: "xsane-0.31 available"</a>
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"Ewald R. de Wit" wrote:<br>
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<p>
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<i>> Oliver Rauch (<a href="mailto:oliver.rauch@Wolfsburg.DE">oliver.rauch@Wolfsburg.DE</a>) wrote:</i><br>
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<i>></i><br>
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<i>> > the idea of the infrared-channel of the slide scanners is comparable</i><br>
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<i>> > to the alpha channel. It is to detect dust and things like that to</i><br>
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<i>> > identify the transparency of the slide.</i><br>
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<i>></i><br>
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<i>> Well I hope the name RGBI will be used in a new SANE standard. There</i><br>
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<i>> is a vague analogy between the IR and the alpha channel but this</i><br>
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<i>> doesn't warrent to call them 'comparable', let alone to use their</i><br>
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<i>> names interchangebly.</i><br>
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<i>></i><br>
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<i>> > Of course we could add an IR and an UV channel and thousands of other</i><br>
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<i>> > channels, but then somone should go and define image file formats that do</i><br>
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<i>> > suppurt such data.</i><br>
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<i>></i><br>
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<i>> What image file formats do or do not exist has actually got nothing to</i><br>
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<i>> do with the topic at hand. SANE is only concerned with the data flow</i><br>
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<i>> between scanner, backend, frontend and potentially something</i><br>
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<i>> in between. It is of no concern to SANE how the data is stored on file.</i><br>
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<i>> Besides, perhaps a future frontend will know how to process these</i><br>
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<i>> thousends of data channels to export only 3 neatly corrected RGB channels</i><br>
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<i>> (hyperscanning comes to mind, where the full spectrum for each pixel</i><br>
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<i>> is measured).</i><br>
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<i>></i><br>
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<i>> You don't seem to have addressed my concerns, namely that your name</i><br>
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<i>> change is confusing to people and an obsticle to future additions of</i><br>
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<i>> functionality.</i><br>
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<i>></i><br>
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<p>
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Hi Ewald,<br>
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<p>
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it does not make any sense to define thousands of frame formats if the frontends<br>
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<p>
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are not able to handle them.<br>
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So the right way is to make available the formats the frontends are able to<br>
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save,<br>
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that is 1 bit, gray, RGB and RGBA. We could also add CMYK and such things,<br>
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also JPEG could be interisting, and I think one day we will add this.<br>
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A second thing is to define a frame like SANE_FRAME_RAW<br>
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where the frontend simply dumps the data into a file. But that is one file<br>
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format and<br>
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there is no need to define thousands of SANE_FRAME_WHATEVER<br>
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because the fronends will not be able to handle it.<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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<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="0023.html">Allan Strand: "Re: Sane + FreeBSD 3.2"</a>
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<li> <b>Previous message:</b> <a href="0021.html">Oliver Rauch: "Re: Sane + FreeBSD 3.2"</a>
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<li> <b>Maybe in reply to:</b> <a href="0005.html">Oliver Rauch: "xsane-0.31 available"</a>
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<!-- nextthread="start" -->
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<!-- reply="end" -->
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</ul>
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