# from sites:
# http://matthew.mceachen.us/blog/how-to-clean-up-photos-of-whiteboards-with-gimp-403.html
# http://registry.gimp.org/node/19822
# from sites:
# http://matthew.mceachen.us/blog/how-to-clean-up-photos-of-whiteboards-with-gimp-403.html
# http://registry.gimp.org/node/19822