let cg; //variable were I can store a createGraphics 

let cg2;//variable were I can store another createGraphics 

​

function setup() {

  createCanvas(390, 240);

  capture = createCapture(VIDEO);

  capture.size(320, 240);

  capture.hide();

  cg = createGraphics(320, 240);

  cg2 = createGraphics(320, 240);

}

​

function draw() {

  background(255);

  //image(capture, 0, 0, 320, 240);

  //filter(INVERT);

  cg.background(0)

  cg.image(capture, 0, 0, 320, 240);

  cg.filter(INVERT);

  image(cg, 0, 0, 50, 50);

  cg2.background(0)

  cg2.image(capture, 0, 0, 320, 240);

  cg2.filter(GRAY);

  image(cg2, 0, 50, 50, 50);

}