ppmflash

Brighten PPM image toward white

Brighten image by factor

$ ppmflash [0.5] [input.ppm] > [output.ppm]

ppmflash factor [file]

ppmflash brightens a PPM image toward white by the specified factor. Useful for creating flash/fade effects. Part of Netpbm toolkit.

factor

Flash factor (0-1, where 1 is white).

sudo apt install netpbm

sudo dnf install netpbm

sudo pacman -S netpbm

sudo apk add netpbm

sudo zypper install netpbm

brew install netpbm

nix profile install nixpkgs#netpbm