voluptasquisquam/src/stack/compute/median.js

Image processing and manipulation in JavaScript

import {median as medianFromHistogram} from '../../util/histogram';

/**
 * @memberof Stack
 * @instance
 * @return {number[]}
 */
export default function median() {

    this.checkProcessable('median', {
        bitDepth: [8, 16]
    });


    let histograms = this.getHistograms({maxSlots: this[0].maxValue + 1});
    let result = new Array(histograms.length);
    for (let c = 0; c < histograms.length; c++) {
        let histogram = histograms[c];
        result[c] = medianFromHistogram(histogram);
    }
    return result;
}