def hough_ellipse(img, threshold=4, accuracy=1, min_size=4, max_size=None):
 return _hough_ellipse(img, threshold, accuracy, min_size, max_size)

def hough_ellipse ( img , threshold = 4 , accuracy = 1 , min_size = 4 , max_size = None ) : return _hough_ellipse ( img , threshold , accuracy , min_size , max_size )
perform an elliptical hough transform .