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<TITLE>sane-devel: image data format polarity</TITLE>
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<META NAME="Author" CONTENT="David Paschal (paschal@rcsis.com)">
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<META NAME="Subject" CONTENT="image data format polarity">
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<H1>image data format polarity</H1>
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<STRONG>From:</STRONG> David Paschal (<A HREF="mailto:paschal@rcsis.com?Subject=Re:%20image%20data%20format%20polarity&In-Reply-To=<200009091003.DAA03097@axel.local>"><EM>paschal@rcsis.com</EM></A>)<BR>
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<STRONG>Date:</STRONG> Sat Sep 09 2000 - 03:03:02 PDT
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0093.html">Petter Reinholdtsen: "Re: image data format polarity"</A>
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<LI><STRONG>Reply:</STRONG> <A HREF="0093.html">Petter Reinholdtsen: "Re: image data format polarity"</A>
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<HR NOSHADE><P>
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Hi. I discovered a quirk about the image data format expected by frontends,
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<BR>
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in particular xsane and xscanimage. For bit depths >=8 (grayscale, color),
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<BR>
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larger values mean more red, green, blue, or white. On the other hand, for
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<BR>
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1-bit depths (lineart, halftone), 0 means white and 1 means black. Is there
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<BR>
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any particular reason for this, especially since xsane and xscanimage both
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<BR>
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end up having to invert it anyway in order to display a preview? In any
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<BR>
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case, I think this requirement should be mentioned in the SANE Standard
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<BR>
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document.
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<BR>
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<P>David
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<BR>
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<P><P><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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To unsubscribe: echo unsubscribe sane-devel | mail <A HREF="mailto:majordomo@mostang.com?Subject=Re:%20image%20data%20format%20polarity&In-Reply-To=<200009091003.DAA03097@axel.local>">majordomo@mostang.com</A>
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<EM>
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This archive was generated by <A HREF="http://www.hypermail.org/">hypermail 2b29</A>
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: <EM>Sat Sep 09 2000 - 02:57:01 PDT</EM>
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