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("-" * 30)

image_dark = (image.astype(np.int16) - 20).astype(np.uint8)
print("操作1：变暗20后：")
print(image_dark)
print("-" * 30)

image_crop = image_dark[0:2, 0:2]
print("操作2：裁剪左上角2×2后：")
print(image_crop)
print("-" * 30)

image_flip = np.fliplr(image_crop)
print("操作3：水平翻转后：")
print(image_flip)