Calibrate works?

lib/opencv_processing/examples/FindHistogram/FindHistogram.pde

@@ -0,0 +1,47 @@
+import gab.opencv.*;
+
+OpenCV opencv;
+Histogram grayHist, rHist, gHist, bHist;
+
+PImage img;
+
+void setup() {
+  size(640, 400);
+  img = loadImage("test.jpg");
+  opencv = new OpenCV(this, img);
+
+  grayHist = opencv.findHistogram(opencv.getGray(), 256);
+  rHist = opencv.findHistogram(opencv.getR(), 256);
+  gHist = opencv.findHistogram(opencv.getG(), 256);
+  bHist = opencv.findHistogram(opencv.getB(), 256);
+}
+
+void draw() {
+  background(0);
+  image(img, 10, 0, 300, 200);
+
+  stroke(125); noFill();  
+  rect(320, 10, 310, 180);
+  
+  fill(125); noStroke();
+  grayHist.draw(320, 10, 310, 180);
+
+  stroke(255, 0, 0); noFill();  
+  rect(10, height - 190, 200, 180);
+  
+  fill(255, 0, 0); noStroke();
+  rHist.draw(10, height - 190, 200, 180);
+
+  stroke(0, 255, 0); noFill();  
+  rect(220, height - 190, 200, 180);
+  
+  fill(0, 255, 0); noStroke();
+  gHist.draw(220, height - 190, 200, 180);
+
+  stroke(0, 0, 255); noFill();  
+  rect(430, height - 190, 200, 180);
+  
+  fill(0, 0, 255); noStroke();
+  bHist.draw(430, height - 190, 200, 180);
+}
+