Examples for Symmetry

features.py

def horizontal_asymmetry(image):
    left, right = np.hsplit(image, 2)
    right_flipped = np.flip(right, axis=1)
    return np.sum(left - right_flipped) ** 2

def vertical_asymmetry(image):
    top, bottom = np.vsplit(image, 2)
    bottom_flipped = np.flip(bottom, axis=0)
    return np.sum(top - bottom_flipped) ** 2