import cv2
img = cv2.imread('../0.jpg')# 图片性质#rows,cols,channels
rows, cols, channels = img.shape   # 返回(310, 310, 3)
print(rows)                        # 宽310(rows)
print(cols)                        # 长310(cols)
print(channels)                    # 3通道(channels)# size
print(img.size)                    # 所有像素数量: 288300 = 310 * 310 * 3 #type
print(img.dtype)   # uint8