blank page detection nach dem scannen

[Florian Lohoff]

On Wed, Apr 08, 2009 at 12:17:04PM +0200, Florian Lohoff wrote:
> 	TMPDIR=$1
> 
> 	unpaper=/usr/bin/unpaper
> 	pnmtotiff=/usr/bin/pnmtotiff
> 	tiffcp=/usr/bin/tiffcp
> 	tiff2pdf=/usr/bin/tiff2pdf
> 
> 	set -x
> 
> 	OUTPUT=~/Desktop/scan-`date +%Y%m%d%H%M%S`.pdf
> 
> 	${unpaper} -v --layout none ${TMPDIR}/scan-%d.pnm ${TMPDIR}/unpaper-%d.pnm
> 
> 	for file in ${TMPDIR}/unpaper*; do
> 		${pnmtotiff} $file >$file.tiff
> 	done
> 
> 	${tiffcp} ${TMPDIR}/*.tiff ${TMPDIR}/allpages.tiff
> 
> 	${tiff2pdf} -z -o ${OUTPUT} ${TMPDIR}/allpages.tiff 
> 
> Der naechste schritt waere noch via tesseract ein OCR und das
> als comment ans PDF haengen - aber das beim naechsten mal.
> 
> Jetzt erstmal - Wie werde ich "leere" seiten los?

Okay - die 20kbyte scheinen ganz gut - so loese ich das jetzt und
bisher klappts gut ... 

	#!/bin/sh

	TMPDIR=$1

	blankpagesize=20k
	unpaper=/usr/bin/unpaper
	pnmtojpeg=/usr/bin/pnmtojpeg
	pnmtotiff=/usr/bin/pnmtotiff
	tiffcp=/usr/bin/tiffcp
	tiff2pdf=/usr/bin/tiff2pdf
	pnmtopng=/usr/bin/pnmtopng

	set -x

	OUTPUT=~/Desktop/scan-`date +%Y%m%d%H%M%S`.pdf

	${unpaper} -v --layout none ${TMPDIR}/scan-%d.pnm ${TMPDIR}/unpaper-%d.pnm

	for file in ${TMPDIR}/unpaper*; do
		${pnmtotiff} $file >$file.tiff.uncompress
		${tiffcp} -c zip:2 $file.tiff.uncompress $file.tiff
	done

	files=`find ${TMPDIR} -iname "unpaper*tiff" -size +$blankpagesize`

	${tiffcp} ${files} ${TMPDIR}/allpages.tiff

	${tiff2pdf} -z -o ${OUTPUT} ${TMPDIR}/allpages.tiff 

	ls -la ${TMPDIR}

Flo
-- 
Florian Lohoff                  flo at rfc822.org             +49-171-2280134
	Those who would give up a little freedom to get a little 
          security shall soon have neither - Benjamin Franklin
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