17 lines
547 B
Markdown
17 lines
547 B
Markdown
# ppmdither
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> Reduce the number of colors in an image by applying dithering.
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> More information: <https://netpbm.sourceforge.net/doc/ppmdither.html>.
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- Read a PPM image, apply dithering and save it to a file:
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`ppmdither {{path/to/image.ppm}} > {{path/to/file.ppm}}`
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- Specify the desired number of shades for each primary color:
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`ppmdither -red {{2}} -green {{3}} -blue {{2}} {{path/to/image.ppm}} > {{path/to/file.ppm}}`
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- Specify the dimensions of the dithering matrix:
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`ppmdither -dim {{2}} {{path/to/image.ppm}} > {{path/to/file.ppm}}`
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