private void sceneRecognize(){
  Log.d(TAG,"sceneRecognize");
  mAction=VisionAction.SceneRecognition;
  lockFocus();
}

private void sceneRecognize ( ) { Log . d ( TAG , "sceneRecognize" ) ; mAction = VisionAction . SceneRecognition ; lockFocus ( ) ; }
initiate a still image capture .
