PImage scaledImg;
PImage differenceImg;

// size of the webcam capture depends your camera
int captureWidth  = 640;
int captureHeight = 480;

int cvWidth;
int cvHeight;

int rows = 3; // rows
int cols = 4; // cols

Capture camera;

void setupCam() {

  // make sure the draw runs one time to display the "waiting" text
  if(frameCount<2) return;

  println("Checking for webcam");

  String[] cameras = Capture.list();

  if (cameras.length == 0) {
    println("There are no cameras available for capture.");
    exit();
  }
  else {
    println("Available cameras:");
  //  printArray(cameras);

    // The camera can be initialized directly using an element from the array returned by list();
    //cam = new Capture(this, cameras[camNumber]);
    int camNumber = 4;
    camera = new Capture(this, captureWidth, captureHeight, cameras[camNumber]);

    // Start capturing the images from the camera
    camera.start();

    while(camera.available() != true) {
      delay(1);//println("waiting for camera");
    }

    cameraInitDone = true;

  }
}