image gamma 값 조정 (gamma correction)

def gamma_correction(image, gamma=1.0):    invGamma = 1.0 / gamma    table = np.zeros((256, 1), dtype='uint8')    for i in range(256):       table[i] = ((i / 255.0) ** invGamma) * 255    return cv2.LUT(image, table)

 

(원본/gamma correction 0.5/gamma correction 1.5 적용)