Glue

`imgdiff`

I have a large collection of image-processing tools

Most of them are built around Jef Poskanzer's PBM toolset

PBM is the simplest possible bitmap format:

        P1
        640 480
        1101101101101101110111011011011011011011011011011011011011011011011011
        0110110110110110110110110110110110111011011011011011011011011011011011
        0110110110110110110110110110110110110110110110110110110110110110110110
        1101101101101101101101101101101101101101101101101101101101101101101101
        1011011011011011011011011011011011011011011011011011011011011011011011
        0110110110110110110110110110110111010110110110110110110110110110110110
        1101101101101101101101101101101101101101101101101101101101101101101101
        1011011011011011011011011011011011011011101101101101101101101110000000
        0000000000...

PPM is the simplest possible 24-bit color pixmap format:

        P3
        640 480
        255
        255 255 255  255 255 255  255 255 255  255 255 255  255 255 255  255 255 255
        255 255 255  255 255 255  254 254 254  253 253 253  245 245 245  255 255 255
        106 106 106  235 235 235  255 255 255  246 246 246  100 100 100  255 255 255
        255 255 255  93 93 93  248 248 248  109 109 109  255 255 255  236 236 236
        241 241 241  252 252 252  255 255 255  255 255 255  254 254 254  251 251 251
        ...