Scripts and output for coloring book pages based on digital elevation data

Adult coloring books are all the rage. Most are hand-drawn, and subjects are wide-ranging. I happen to love maps and landscape data, so I created an automated method to convert digital elevation models (or any greyscale image, for that matter) into a color-able coloring book image.

View the web site here.

Before using the included Perl script, you'll need to make sure that the NetPBM and TurboJPEG packages are installed and in the user's path. You can do this on an RPM system with:

sudo yum install libjpeg-turbo-utils netpbm-progs

The script operates on whole directories. Every image in the indir (below) will be converted and an output image file and thumbnail will be created in the outdir (which will be created if it does not already exist). Run the script like so:

makeOutlineImage.pl indir outdir