pbmnoise
Generate white noise.
TLDR
Generate a PGM image containing white noise
$ pbmnoise [width] [height] > [path/to/output.pbm]
Specify the seed for the pseudo-random number generator
$ pbmnoise [width] [height] -randomseed [value] > [path/to/output.pbm]
Specify the desired rate of white to black pixels
$ pbmnoise [width] [height] -ratio [1/3] > [path/to/output.pbm]
