voluptasquisquam/src/image/compute/mean.js

Image processing and manipulation in JavaScript

import {mean as histogramMean} from '../../util/histogram';


/**
 * Returns an array with the average value of each channel
 * @memberof Image
 * @instance
 * @return {number[]} Array having has size the number of channels
 */
export default function mean() {
    let histograms = this.getHistograms({maxSlots: this.maxValue + 1});
    let result = new Array(histograms.length);
    for (let c = 0; c < histograms.length; c++) {
        let histogram = histograms[c];
        result[c] = histogramMean(histogram);
    }
    return result;
}