}
## Setup and utilities ##
-# Mac OS X doesn't have seq. It has jot instead.
-Linux_seq="seq"
-Darwin_seq="jot -"
-if [[ $(uname) == "Darwin" ]]; then my_seq=$Darwin_seq;
-else my_seq=$Linux_seq;
-fi;
-
+source $(dirname $0)/my_seq.sh
## Process flags ##
forcepdf=
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
cp $origpnm $preppnm
fi;
+ # check it hasn't mostly disappeared - e.g. if the scan was all black
+ # (e.g. forgot to put the book down when you first hit scan)
+ if [[ $(convert $preppnm -format '%[fx:s.w*s.h>1000]' info:) = "0" ]]; then
+ [[ $verbose == 1 ]] && echo "Discarding pg ${pgn}: not enough remains after masking."
+ continue;
+ fi;
+
#unpaper it
#names go a bit funny here
#also, ignore flags starting here
unppnm=$dir/upg-${pgn}-%01d.pnm
unpaper $unpaperflags --layout double --overwrite --no-blackfilter -ni 10 -op 2 $preppnm $unppnm || exit 1
+ #detect if the page is 2-up
+ for subpg in $($my_seq 1 2); do
+ echo Processing subpg ${subpg}.
+ if $(dirname $0)/detect2pages.sh $dir/upg-${pgn}-${subpg}.pnm ${pgn} ${subpg}; then
+ if [[ $verbose == 1 ]]; then
+ echo "Resplitting subpg ${subpg}."
+ fi
+ unpaper $unpaperflags --pre-rotate 90 --layout double --overwrite --no-blackfilter -op 2 $dir/upg-${pgn}-${subpg}.pnm $dir/upg-${pgn}-${subpg}-%01d.pnm
+ else
+ cp $dir/upg-${pgn}-${subpg}.pnm $dir/upg-${pgn}-${subpg}-1.pnm
+ fi;
+
+ done;
+
#final convert and clean w/ bebook optimisation
if [[ $bebook ]]; then
- convert $convertflags $dir/upg-${pgn}-?.pnm -depth 4 -resize 600x800 $dir/final-${pgn}-%01d.${extension} || exit 1
+ convert $convertflags -colorspace Gray -median 1 $dir/upg-${pgn}-1-?.pnm -trim -resize 1800x2400 $dir/final-${pgn}-1-%01d.${extension} || exit 1
+ convert $convertflags -colorspace Gray -median 1 $dir/upg-${pgn}-2-?.pnm -trim -resize 1800x2400 $dir/final-${pgn}-2-%01d.${extension} || exit 1
else
- convert $convertflags $dir/upg-${pgn}-?.pnm $dir/final-${pgn}-%01d.${extension} || exit 1
+ convert $convertflags $dir/upg-${pgn}-1-?.pnm $dir/final-${pgn}-1-%01d.${extension} || exit 1
+ convert $convertflags $dir/upg-${pgn}-2-?.pnm $dir/final-${pgn}-2-%01d.${extension} || exit 1
fi
done
-mkdir $dir/pages
+mkdir -p $dir/pages
mv $dir/final-*.${extension} $dir/pages