histogram.gl

yarn add histogram.gl
# or 
npm install histogram.gl --save

Example:

import { createRgbaHistogram, createSingleChannelHistogram } from 'histogram.gl';
 
createRgbaHistogram(imageData, imageWidth, imageHeight)
    .then((histogramData) => {
        console.log(histogramData);
    });
 
createSingleChannelHistogram(channelData, imageWidth, imageHeight)
    .then((histogramData) => {
        console.log(histogramData);
    });

0 dependencies.

Inspired by

• https://github.com/hubmapconsortium/vitessce-image-viewer
• https://webglfundamentals.org/webgl/lessons/webgl-image-processing.html#comment-2619624947
• https://jsfiddle.net/greggman/9amgpndt/