import numpy as np
image = np.array([
    [100, 150, 200],
    [80, 120, 180],
    [60, 90, 140]
], dtype=np.uint8)
print("原图:")
print(image)
image_dark = np.clip(image - 20, 0, 255)
print("\n1. 变暗20后:")
print(image_dark)
image_crop = image[0:2, 0:2]
print("\n2. 裁剪左上角(2x2):")
print(image_crop)
image_flip = np.fliplr(image)
print("\n3. 水平翻转:")
print(image_flip)