pamditherbw

Apply dithering to a greyscale image, i.e. turn it into a pattern of black and white pixels that look the same as the original greyscale. More information: <https://netpbm.sourceforge.net/doc/pamditherbw.html>.

Install

All systems
curl cmd.cat/pamditherbw.sh
Debian Debian
apt-get install netpbm
Ubuntu
apt-get install netpbm
Arch Arch Linux
pacman -S netpbm
image/svg+xml Kali Linux
apt-get install netpbm
CentOS
yum install netpbm-progs
Fedora
dnf install netpbm-progs
Windows (WSL2)
sudo apt-get update sudo apt-get install netpbm
OS X
brew install netpbm
Raspbian
apt-get install netpbm
Dockerfile
dockerfile.run/pamditherbw

Apply dithering to a greyscale image, i.e. turn it into a pattern of black and white pixels that look the same as the original greyscale. More information: <https://netpbm.sourceforge.net/doc/pamditherbw.html>.

  • Read a PGM image, apply dithering and save it to a file:
    ppmditherbw path/to/image.pgm > path/to/file.pgm
  • Use the specified quantization method:
    ppmditherbw -floyd|fs|atkinson|threshold|hilbert|... path/to/image.pgm > path/to/file.pgm
  • Use the atkinson quantization method and the specified seed for a pseudo-random number generator:
    ppmditherbw -atkinson -randomseed 1337 path/to/image.pgm > path/to/file.pgm
  • Specify the thresholding value for quantization methods that perform some sort of thresholding:
    ppmditherbw -fs|atkinson|thresholding -value 0.3 path/to/image.pgm > path/to/file.pgm

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