My Sketch

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let capture;

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function setup() {

  createCanvas(windowWidth, windowHeight);

  frameRate(30);

  capture = createCapture(VIDEO)

  capture.size(320,240)

  capture.hide()

  background(0)

}

​

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function draw() {

  image(capture,0,0,160,120)

  capture.loadPixels();

  let widthRatio = capture.width/ width

  let heightRatio = capture.height/height;

  for (let i = 0; i<100; i++){

    let x = int(random(width))

    let y = int(random(height))

    let col = capture.get(x*widthRatio,y*heightRatio)

    noStroke()

    let diameter = map(saturation(col),0,225,1,120)

    fill(red(col),green(col),blue(col),128)

    ellipse(x,y,diameter)

  }

}