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Colorsquash is a colour quantization[^1] crate and algorithm.
At it's core, it sorts the unique colours that appear in an image
and selects the most frequent that are sufficiently different.
To put it more clearly:
The most frequent colour is always selected and placed into the palette.
If the second most frequent colour is *different enough*, it will be selected
as well. If it's not, it is skipped and the third one is tried. This continues
until it selects the necessary amount of colours.
[^1]: [wikipedia: color quantization](https://en.wikipedia.org/wiki/Color_quantization)
### squash
A CLI tool to quantize colours :D
Currently only takes PNG in the RGB colorspace and outputs indexed PNG.
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