Calibrate works?

lib/opencv_processing/examples/CalibrationDemo/CalibrationDemo.pde

@@ -0,0 +1,25 @@
+import gab.opencv.*;
+
+PImage src;
+ArrayList<PVector> cornerPoints;
+OpenCV opencv;
+
+void setup() {
+  src = loadImage("checkerboard.jpg");
+  src.resize(500, 0);
+  size(src.width, src.height);
+
+  opencv = new OpenCV(this, src);
+  opencv.gray();
+  
+  cornerPoints = opencv.findChessboardCorners(9,6);
+}
+
+void draw() {
+  image( opencv.getOutput(), 0, 0);
+  fill(255,0,0);
+  noStroke();
+  for(PVector p : cornerPoints){
+    ellipse(p.x, p.y, 5, 5);
+  }
+}