setMinFaceSize     20 samples/android/face-detection/src/org/opencv/samples/facedetect/DetectionBasedTracker.java     public void setMinFaceSize(int size) {
setMinFaceSize    232 samples/android/face-detection/src/org/opencv/samples/facedetect/FdActivity.java     private void setMinFaceSize(float faceSize) {