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()

darkened = np.clip(image.astype(np.int16) - 20, 0, 255).astype(np.uint8)
print("变暗20后的图像:")
print(darkened)
print()

cropped = image[0:2, 0:2]
print("裁剪左上角(2×2区域):")
print(cropped)
print()

flipped = np.fliplr(image)
print("水平翻转后的图像：")
print(flipped)