Page Comparison

import processing.video.*;
Capture video;

PVector brightestPoint = new PVector(0,0);

void setup() {
  size(640, 480);

  // start video capture
  video = new Capture(this, width, height, 30);
  video.start();
}

void draw() {
  // read new video frame if available
  if (video.available()) {
    video.read();
  }

  // initially floatset brightness =to 0;zero
   for (float brightness = 0;

  // initially set point to center
  PVector point = new PVector(width/2, height/2);

  // go through video pisel by pixel
  for (int x=0; x < width; x++) {
    for (int y=0; y < height; y++) {
      // get pixel location
      int loc = x + y * width;

      // get color of pixel
      color c = video.pixels[loc];

      // check if brightness is higher than current value
      if (brightness(c) > brightness) {
        // set new brightness
        brightness = brightness(c);

        // save location of brighter point
        brightestPointpoint.x = x;
        brightestPointpoint.y = y;
      }
    }
  }

  // draw video
  image(video, 0, 0);

  // draw circle
  ellipse(brightestPointpoint.x, brightestPointpoint.y, 20, 20);
}