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17 lines
675 B
Markdown
17 lines
675 B
Markdown
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# pnmcolormap
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> Create quantization color map for a PNM image.
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> More information: <https://netpbm.sourceforge.net/doc/pnmcolormap.html>.
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- Generate an image using only `n_colors` or less colors as close as possible to the input image:
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`pnmcolormap {{n_colors}} {{path/to/input.pnm}} > {{path/to/output.ppm}}`
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- Use the splitspread strategy for determining the output colors, possibly producing a better result for images with small details:
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`pnmcolormap -splitspread {{n_colors}} {{path/to/input.pnm}} > {{path/to/output.ppm}}`
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- Sort the resulting colormap, which is useful for comparing colormaps:
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`pnmcolormap -sort {{path/to/input.pnm}} > {{path/to/output.ppm}}`
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