Keyes

let cv = require('opencv');
let fs = require('fs');
let Jimp = require('jimp');

const imageWidth = 640;
const imageHeight = 480;
const movementPadding = 10;
const pixelDiffThreshold = 50;

var diff = new cv.Matrix(imageWidth, imageHeight);

Keyes

/*
* Motion detection with nodeJS
*
* You'll need node-canvas: https://github.com/Automattic/node-canvas
*/

var Canvas = require('canvas'), 
    Image = Canvas.Image,
    canvas = new Canvas(640, 480),
    diffCanvas = new Canvas(640, 480),