pambrighten
Change a PAM image's saturation and value.
TLDR
Increase the saturation of each pixel by the specified percentage
$ pambrighten -saturation [value_percent] [path/to/image.pam] > [path/to/output.pam]
Increase the value (from the HSV color space) of each pixel by the specified percentage
$ pambrighten -value [value_percent] [path/to/image.pam] > [path/to/output.pam]
