import numpy as np

image = np.array([
    [100, 150, 200],
    [80, 120, 180],
    [60, 90, 140]
], dtype=np.uint8)

print("原图：")
print(image)
print("-" * 20)


image_dark = image - 20
image_dark = np.clip(image_dark, 0, 255)  
print("变暗20后：")
print(image_dark)
print("-" * 20)


image_crop = image[0:2, 0:2]
print("裁剪左上角2×2后：")
print(image_crop)
print("-" * 20)


image_flip = np.fliplr(image)
print("水平翻转后：")
print(image_flip)