function usage {
cat >&2 << __EOF__
-Usage: $0 [-vfpsmut] [-d depth] pdffile outdir
+Usage: $0 [-vfpsmutb] [-D DPI] [-d depth] [-F format] pdffile outdir
Convert pdffile - a pdf of scanned facing pages - to a set of images in outdir,
each with only one page.
OPTIONS:
-v: Be verbose.
-d depth: Use given depth. Default is 1 for black and white, 8 for colour.
Unpaper can only handle up to 8.
- -D dpi: Use given DPI. Colour scans on library scanners are usually 300, bw 400.
+ -D dpi: Use given DPI. Colour scans on library scanners are usually 300, bw 400.
+ -F extension: use the output format signified by the extension. Default is png
-s: skip masking/trimming. Overrides -m.
-f: Forceably redo everything.
-p: Forceably redo pdf conversion. Implies options below, equivalent to -f.
-m: Forceably redo masking/trimming and other preprocessing. Impiles options below.
-u: Forceably redo unpaper processing. Implies option below. IGNORED
-t: Forceably redo final trimming and cleaning. IGNORED
+ -b: Optimize for BeBook One.
__EOF__
}
dpi=
skipmask=
verbose=
-while getopts 'vd:sfpmuc' OPTION
+extension="png"
+bebook=
+while getopts 'vd:D:sfpmucF:b' OPTION
do
case $OPTION in
v) verbose=1
;;
t) forceclean=1
;;
-# b) bflag=1
-# bval="$OPTARG"
-# ;;
+ F) extension="$OPTARG"
+ ;;
+ b) bebook=1
+ ;;
?) usage
exit 2
;;
if [[ ! $skipmask && ( ! $([ -e $preppnm ]) || $forcemask ) ]]; then
# create mask:
# ... downscale, blur,
- convert $convertflags -resize 25% -depth 8 -blur 10 $origpnm $dir/pg-mask-${pgn}.pnm ||exit 1
+ convert $convertflags -resize 10% -depth 8 -blur 10 -median 2 $origpnm $dir/pg-mask-${pgn}.pnm ||exit 1
# ... get crop co-ords. They're off by ~2 as I don't know how to
# properly correct for the border.
- cropcords=$(convert -border 1x1 -bordercolor '#000' -resize 400% -trim -fuzz 90% -format "%wx%h%O" $dir/pg-mask-${pgn}.pnm info: || exit 1)
+ cropcords=$(convert -border 1x1 -bordercolor '#000' -resize 1000% -trim -fuzz 90% -format "%wx%h%O" $dir/pg-mask-${pgn}.pnm info: || exit 1)
# ... crop and despeckle? the final pre-prepared image
convert $convertflags -crop $cropcords $origpnm $preppnm || exit 1
unppnm=$dir/upg-${pgn}-%01d.pnm
unpaper $unpaperflags --layout double --overwrite --no-blackfilter -ni 10 -op 2 $preppnm $unppnm || exit 1
- # final convert and clean
- convert $convertflags $dir/upg-${pgn}-?.pnm $dir/upg-${pgn}-%01d.tiff || exit 1
-
+ #final convert and clean w/ bebook optimisation
+ if [[ $bebook ]]; then
+ convert $convertflags -colorspace Gray -median 1 $dir/upg-${pgn}-?.pnm -resize 1200x1600 $dir/final-${pgn}-%01d.${extension} || exit 1
+ else
+ convert $convertflags $dir/upg-${pgn}-?.pnm $dir/final-${pgn}-%01d.${extension} || exit 1
+ fi
done
mkdir $dir/pages
-mv $dir/upg-*.tiff $dir/pages
+mv $dir/final-*.${extension} $dir/pages