image-palette

Extract palette from pixels array, return pixels mapped to palette. Useful for organizing palette-based encoding, like GIF, or various limited colors renderers, like gl-scatter2d. Inspired by get-rgba-palette.

Usage

```javascript var palette = require('image-palette') var pixels = require('image-pixels') var {ids, colors} = palette(await pixels('./image.png')) ```

API

var {ids, colors, amount} = palette(pixels, count=5)

Extract palette from the input pixels array with rgba pixels sequence, whether flat or nested.

• colors is a list of extracted colors [[r, g, b, a], [r, g, b, a], ...].

• ids is an array of input pixels mapped to extracted colors.

• amount is an array with amounts corresponding to the extracted colors, from 0..1 range.

• count is max number of colors to extract.

Related

• image-pixels − load pixels data from any image source.

• image-save − save image/pixel data to a file, canvas or array.

• image-equal − test if two images are equal, based on fuzzy comparison.

License

© 2018 Dmitry Yv. MIT License.