ppmdither

all

Reduce the number of colors in an image by applying dithering.

Options (4)

-rboolean

Specify the desired number of shades for each primary color

Example: ppmdither {{[-r|-red]}} {{2}} {{[-g|-green]}} {{3}} {{[-b|-blue]}} {{2}} {{path/to/image.ppm}} > {{path/to/file.ppm}}

-gboolean

Specify the desired number of shades for each primary color

Example: ppmdither {{[-r|-red]}} {{2}} {{[-g|-green]}} {{3}} {{[-b|-blue]}} {{2}} {{path/to/image.ppm}} > {{path/to/file.ppm}}

-bboolean

Specify the desired number of shades for each primary color

Example: ppmdither {{[-r|-red]}} {{2}} {{[-g|-green]}} {{3}} {{[-b|-blue]}} {{2}} {{path/to/image.ppm}} > {{path/to/file.ppm}}

-dboolean

Specify the dimensions of the dithering matrix

Example: ppmdither {{[-d|-dim]}} {{2}} {{path/to/image.ppm}} > {{path/to/file.ppm}}

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