1603OPENTHISONEINSTEAD

var capture;

​

function setup() {

  createCanvas(windowWidth, windowHeight);

​

  capture = createCapture(VIDEO); // this opens up the camera

  pixelDensity(1); // turns off oversampling ("retina display")

  capture.size(640, 480); // this is in pixels

  capture.hide(); // telling the browser to hide the camera so we can draw it ourselves

​

}

​

function draw() {

  background(0);

  capture.loadPixels();

  for(let i = 0;i<capture.pixels.length;i+=4)

  {

    let L = (capture.pixels[i] + capture.pixels[i+1] + capture.pixels[i+2]) / 3;

    capture.pixels[i] = L;

    capture.pixels[i+1] = L;

    capture.pixels[i+2] = L;

  }

  capture.updatePixels();

  image(capture, 0, 0, width, height);

}