quantize

Node.js module for color quantization, based on Leptonica.

Install

npm install @federicobond/quantize

Quick Overview

Usage

import quantize from '@federicobond/quantize';

const arrayOfPixels = [[190, 197, 190], [202, 204, 200], [207, 214, 210], [211, 214, 211], [205, 207, 207]];
const maximumColorCount = 4;

const colorMap = quantize(arrayOfPixels, maximumColorCount);

• arrayOfPixels - An array of pixels (represented as [R, G, B] arrays) to quantize
• maximumColorCount - The maximum number of colors allowed in the reduced palette

Reduced Palette

The .palette() method returns an array that contains the reduced color palette.

// Returns the reduced palette
colorMap.palette(); 
// [[204, 204, 204], [208,212,212], [188,196,188], [212,204,196]]

Reduced pixel

The .map(pixel) method maps an individual pixel to the reduced color palette.

// Returns the reduced pixel
colorMap.map(arrayOfPixels[0]);
// [188,196,188]

Author

• Olivier Lesnicki

Contributors

• Nick Rabinowitz
• Mike Bostock
• Lokesh Dhakar
• Federico Bond

License

Licensed under the MIT License.