ppmdither Command Examples
Reduce the number of colors in an image by applying dithering. More information: https://netpbm.sourceforge.net/doc/ppmdither.html.
- Read a PPM image, apply dithering and save it to a file:
ppmdither {{path/to/image.ppm}} > {{path/to/file.ppm}}
- Specify the desired number of shades for each primary color:
ppmdither {{[-r|-red]}} {{2}} {{[-g|-green]}} {{3}} {{[-b|-blue]}} {{2}} {{path/to/image.ppm}} > {{path/to/file.ppm}}
- Specify the dimensions of the dithering matrix:
ppmdither {{[-d|-dim]}} {{2}} {{path/to/image.ppm}} > {{path/to/file.ppm}}