def detect_face(fname, opFile):
    """ 
    TODO - not implemented 
    storage = cv.CreateMemStorage()
    haar=cv.LoadHaarClassifierCascade('haarcascade_frontalface_default.xml')
    detected = cv.HaarDetectObjects(fname, haar, storage, 1.2, 2,cv.CV_HAAR_DO_CANNY_PRUNING, (100,100))
    if detected:
        for face in detected:
            print (face, 'saving to ', opFile)
    """
    print('detect_face NOT IMPLEMENTED: ', fname, opFile)
