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<TITLE>sane-devel: Patches for improved batch scanning in scanimage</TITLE>
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<H1>Patches for improved batch scanning in scanimage</H1>
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<!-- received="Sat Jun 2 05:42:01 2001" -->
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<!-- name="caskey-lists-sane-devel@technocage.com" -->
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<!-- subject="Patches for improved batch scanning in scanimage" -->
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<STRONG>From:</STRONG> <A HREF="mailto:caskey-lists-sane-devel@technocage.com?Subject=Re:%20Patches%20for%20improved%20batch%20scanning%20in%20scanimage&In-Reply-To=<Pine.LNX.4.10.10106020514210.843-300000@vaio.factory.tci>"><EM>caskey-lists-sane-devel@technocage.com</EM></A><BR>
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<STRONG>Date:</STRONG> Sat Jun 02 2001 - 05:42:58 PDT
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<LI><STRONG>Next message:</STRONG> <A HREF="0020.html">Gregory F. March: "Re: New member with questions..."</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0018.html">Tim Waugh: "Re: New member with questions..."</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0022.html">Henning Meier-Geinitz: "Re: Patches for improved batch scanning in scanimage"</A>
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<LI><STRONG>Reply:</STRONG> <A HREF="0022.html">Henning Meier-Geinitz: "Re: Patches for improved batch scanning in scanimage"</A>
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<P>
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Hello,
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<BR>
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<P>Short story:
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<BR>
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<P>Attached are two patches for scanimage and its man page to add in a
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<BR>
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collection of useful command line parameters to ease scanning of documents
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<BR>
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on scanners with ADFs.
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<BR>
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<P>Long story:
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<BR>
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<P>I've been wanting to archive some old papers, documents and proceedings
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<BR>
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that I had lying around getting beat up from being moved from one pile to
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<BR>
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the next. I couldn't bear to drop the docs in the shredder because of that
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<BR>
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"I might need it one day" feeling.
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<BR>
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<P>After much head-banging I finally discovered the way to bring my old but
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<BR>
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barely-used scanner back into service was to get it working under SANE. I
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<BR>
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lucked out and just happen to have one of the supported USB HP scanners.
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<BR>
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(An HP C6270A) As far as HP was concerned, I could just drop dead for
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<BR>
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having so old of a scanner so I'm glad for all of the hard work on the
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<BR>
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part of the SANE team. It has been working like a champ for a week now.
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<BR>
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<P>I ran into some troubles while making digital images of documents with my
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<BR>
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ADF for a couple of reasons. First, the HP will happily scan from the ADF
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<BR>
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until its empty then commence doing bed-scans until scanimage is killed.
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<BR>
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Also, the ADF I have is a tiny 20 page model and most of my docs are in
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<BR>
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the 60-120 page range.
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<BR>
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<P>For some reason it doesn't report a status change when the ADF is empty.
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<BR>
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At least not over a USB connection. The 1.0.4 scanimage included in
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<BR>
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sane-backends-1.0.4, only had a simple --batch mode. My extreme thanks to
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<BR>
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whoever put that in, it worked great, but given the limitations of the HP
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<BR>
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I had, I needed more control over batch scanning.
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<BR>
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<P>I've added three more command line parameters for adjusting the starting
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<BR>
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number of the output files, the increment between them and the number of
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<BR>
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pages to scan. This makes it much easier to do a bulk scan of a document
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<BR>
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that won't fit entirely in your ADF, is double-sided when you have a
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<BR>
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single-sided scanner or you have a scanner that won't stop when the ADF is
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<BR>
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empty.
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<BR>
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<P>Here's how my new parameters work:
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<BR>
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<P>To scan in a 63 page double-sided report:
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<BR>
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<P> $ scanimage --batch=document-%03d.pnm \
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<BR>
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--batch-count=32 \
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<BR>
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--batch-double
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<BR>
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<P> $ scanimage --batch=document-%03d.pnm \
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<BR>
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--batch-count=31 \
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<BR>
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--batch-double \
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<BR>
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--batch-start=2
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<BR>
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<P>Some shuffling of the papers is necessary to have all the odd numbered
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<BR>
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pages face-up for the second scan, but it is much easier to gather
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<BR>
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everything into a single composite tiff if their names already sort in the
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<BR>
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proper order.
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<BR>
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<P>The --batch-double command serves as a shortcut to --batch-increment=2.
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<BR>
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<P>Hope this stuff helps someone. Its very low level but it is about all I
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<BR>
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needed.
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<BR>
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<P>C=)
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<BR>
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<P>--------------------------------------------------------------------------
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<BR>
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"Premature optimization is the root of all evil" -Donald Knuth
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<BR>
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--------------------------------------------------------------------------
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<BR>
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Caskey <caskey*technocage.com> /// TechnoCage Inc.
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<BR>
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--------------------------------------------------------------------------
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<BR>
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Heuer's Law: Any feature is a bug unless it can be turned off.
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<BR>
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<P>
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<BR><HR NOSHADE>
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<UL>
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<LI>TEXT/PLAIN attachment: <A HREF="att-0019/01-scanimage.c-1.0.4-batch.patch">scanimage.c-1.0.4-batch.patch</A>
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</UL>
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<!-- attachment="01-scanimage.c-1.0.4-batch.patch" -->
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<BR><HR NOSHADE>
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<UL>
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<LI>TEXT/PLAIN attachment: <A HREF="att-0019/02-scanimage.man-1.0.4-batch.patch">scanimage.man-1.0.4-batch.patch</A>
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</UL>
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<!-- attachment="02-scanimage.man-1.0.4-batch.patch" -->
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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:%20Patches%20for%20improved%20batch%20scanning%20in%20scanimage&In-Reply-To=<Pine.LNX.4.10.10106020514210.843-300000@vaio.factory.tci>">majordomo@mostang.com</A>
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</PRE>
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<LI><STRONG>Next message:</STRONG> <A HREF="0020.html">Gregory F. March: "Re: New member with questions..."</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0018.html">Tim Waugh: "Re: New member with questions..."</A>
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<!-- nextthread="start" -->
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0022.html">Henning Meier-Geinitz: "Re: Patches for improved batch scanning in scanimage"</A>
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<LI><STRONG>Reply:</STRONG> <A HREF="0022.html">Henning Meier-Geinitz: "Re: Patches for improved batch scanning in scanimage"</A>
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<SMALL>
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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 Jun 02 2001 - 05:43:25 PDT</EM>
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