- #also, ignore flags starting here
- unppnm=$dir/upg-${pgn}-%01d.pnm
- unpaper $unpaperflags --layout double --overwrite --no-blackfilter -ni 10 -op 2 $preppnm $unppnm || exit 1
+ unppnmbase=$dir/upg-${pgn}
+ if [ ! -e ${unppnmbase}-1.pnm ] || [ ! -e ${unppnmbase}-2.pnm ] || [[ $forceunpaper ]]; then
+ unpaper $unpaperflags --layout double --overwrite -ni 10 -op 2 $preppnm ${unppnmbase}-%01d.pnm || exit 1
+ fi;
+
+ for subpg in $($my_seq 1 2); do
+ echo Processing subpg ${subpg}.
+
+ subpgfile=${unppnmbase}-${subpg}.pnm #$unppnmbase has $dir/ already
+
+ prepsubpnm=$dir/upg-pp-${pgn}-${subpg}.pnm
+
+ # remask and retrim. FIXME: may throw off 2page detection
+ convert $convertflags -resize 10% -depth 8 -gamma 0.01 -median 2 $subpgfile $dir/spg-mask-${pgn}-${subpg}.png ||exit 1
+
+ # Trim #-border 1x1 -bordercolor '#fff' -trim -fuzz 30%
+ cropcords=$(convert -trim -fuzz 90%\
+ -resize 1000% -format "%wx%h%O" $dir/spg-mask-${pgn}-${subpg}.png info: || exit 1)
+
+ # ... crop and despeckle? the final pre-prepared image
+ convert $convertflags -crop $cropcords $subpgfile $prepsubpnm || exit 1
+
+ #detect if the page is 2-up
+
+ if $(dirname $0)/detect2pages.sh ${prepsubpnm} ${pgn} ${subpg}; then
+ if [[ $verbose == 1 ]]; then
+ echo "Resplitting subpg ${subpg}."
+ fi
+ unpaper $unpaperflags --pre-rotate 90 --layout double --overwrite -op 2 $prepsubpnm $dir/upg-${pgn}-${subpg}-%01d.pnm || exit 1
+ else
+ cp $prepsubpnm $dir/upg-${pgn}-${subpg}-1.pnm
+ fi;