ppmflash
Brighten PPM image toward white
TLDR
Brighten image by factor
$ ppmflash [0.5] [input.ppm] > [output.ppm]
SYNOPSIS
ppmflash factor [file]
DESCRIPTION
ppmflash brightens a PPM image toward white by the specified factor. Useful for creating flash/fade effects. Part of Netpbm toolkit.
PARAMETERS
factor
Flash factor (0-1, where 1 is white).
SEE ALSO
ppmbrighten(1), ppmdim(1)