pamditherbw

converts grayscale images to black and white using dithering

TLDR

Dither to black and white

$ pamditherbw [input.pgm] > [output.pbm]

Dither with Floyd-Steinberg

$ pamditherbw -fs [input.pgm] > [output.pbm]

Dither with threshold

$ pamditherbw -threshold -value [0.5] [input.pgm] > [output.pbm]

SYNOPSIS

pamditherbw [options] [file]

DESCRIPTION

pamditherbw converts grayscale images to black and white using dithering. Multiple algorithms available for different quality/speed tradeoffs. Part of Netpbm toolkit.

PARAMETERS

-fs

Floyd-Steinberg dithering.

-threshold

Simple threshold.

-hilbert

Hilbert curve dithering.

-value n

Threshold value (0.0-1.0).