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<TITLE>sane-devel: Re: Getting compressed B/W image data from Fujitsu</TITLE>
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<META NAME="Author" CONTENT="Tom Martone (tom@martoneconsulting.com)">
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<META NAME="Subject" CONTENT="Re: Getting compressed B/W image data from Fujitsu M3096GXm scanner">
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<H1>Re: Getting compressed B/W image data from Fujitsu M3096GXm scanner</H1>
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<STRONG>From:</STRONG> Tom Martone (<A HREF="mailto:tom@martoneconsulting.com?Subject=Re:%20Getting%20compressed%20B/W%20image%20data%20from%20Fujitsu%20M3096GXm%20scanner&In-Reply-To=<3A7B5E3E.D3C68B23@martoneconsulting.com>"><EM>tom@martoneconsulting.com</EM></A>)<BR>
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<STRONG>Date:</STRONG> Fri Feb 02 2001 - 17:26:22 PST
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<LI><STRONG>Next message:</STRONG> <A HREF="0016.html">Patricio Díaz G.: "RE: Problems with KYE ColorPage-HR5+DTC3181LE+Kernel 2.4.0"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0014.html">Randolph Bentson: "Re: Getting compressed B/W image data from Fujitsu M3096GXm scanner"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0008.html">Armistead, Jason: "Getting compressed B/W image data from Fujitsu M3096GXm scanner"</A>
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<P>
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Greetings,
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<BR>
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<P>Armistead, Jason wrote:
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<BR>
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<EM>>
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</EM><BR>
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<EM>> I would have thought that some of the top-end high volume
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</EM><BR>
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<EM>> scanners like Bell & Howell would surely support on-board compression, and
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</EM><BR>
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<EM>> that someone, somewhere might have added them to SANE.
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</EM><BR>
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<P>The Bell & Howell Copiscan II series does support several compressed
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<BR>
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formats (CCITT G3, CCITT G3-2D, CCITT G4) and the SANE driver sane-bh
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<BR>
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supports these. To fully utilize the compressed formats, a patch to
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<BR>
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sane.h is necessary which adds several new frametypes.
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<BR>
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<P> /* optional frames */
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<BR>
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SANE_FRAME_TEXT = 10, /* Human readable text non-image data */
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<BR>
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SANE_FRAME_JPEG = 11, /* JPEG compressed image */
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<BR>
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SANE_FRAME_G31D = 12, /* Group 3 1D compressed image */
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<BR>
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SANE_FRAME_G32D = 13, /* Group 3 2D compressed image */
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<BR>
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SANE_FRAME_G42D = 14 /* Group 4 2D compressed image */
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<BR>
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<P>Compressed formats are not supported in the current SANE standard,
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<BR>
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and are to be addressed in the next major version of SANE. Unofficially,
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<BR>
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and non-standardly, I guess, a simple addition of a few enumeration
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<BR>
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values and a cooperating front and back end is all you would need
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<BR>
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to get this going on your compression-enabled scanner.
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<BR>
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<P>Happy scanning,
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<BR>
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Tom
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<BR>
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<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:%20Getting%20compressed%20B/W%20image%20data%20from%20Fujitsu%20M3096GXm%20scanner&In-Reply-To=<3A7B5E3E.D3C68B23@martoneconsulting.com>">majordomo@mostang.com</A>
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</PRE>
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<LI><STRONG>Next message:</STRONG> <A HREF="0016.html">Patricio Díaz G.: "RE: Problems with KYE ColorPage-HR5+DTC3181LE+Kernel 2.4.0"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0014.html">Randolph Bentson: "Re: Getting compressed B/W image data from Fujitsu M3096GXm scanner"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0008.html">Armistead, Jason: "Getting compressed B/W image data from Fujitsu M3096GXm scanner"</A>
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This archive was generated by <A HREF="http://www.hypermail.org/">hypermail 2b29</A>
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: <EM>Fri Feb 02 2001 - 17:11:13 PST</EM>
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