tldr/pages/common/pnmcolormap.md

17 lines
675 B
Markdown
Raw Normal View History

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