CleanupLeafletMap.sh

#!/bin/bash

for file in `find . -type f -iname "*.png"`
do
    echo -n "processing $file ... "
    
    isWhite=`convert $file -colorspace HSL -channel g -separate +channel -format "%[fx:mean]" info:`

    if [ "$isWhite" == "0" ]
    then
        rm $file
        echo "white $file removed"
    else
        # floodfill - to ne
        #convert $file -bordercolor white -border 1x1 \
        #        -alpha set -channel RGBA -fuzz 10%   \
        #        -fill none -floodfill +0+0 white     \
        #        -shave 1x1 $file

        # smazani bile
        convert $file -channel rgba -alpha set -fill none -opaque white $file
        # smazani bile s toleranci
        # convert $file -channel rgba -alpha set -fuzz 10% -fill none -opaque white $file
        echo "converted"
    fi
done