sv035.jpg.ppm 1.5 1.5 0  # backlit window
sv080.jpg.ppm 0   0   9  # daytime image to get nice blue sky, fill-in, etc.
sv097.jpg.ppm 0   3   0  # lower left of building, where vines growing
sv100.jpg.ppm 1   0   0  # top of doorway
sv101.jpg.ppm 2   0   2  # second and third columns
