完成作业一:3-1-3

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2026-04-16 15:54:57 +08:00
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commit bc6c115d45
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0416.py Normal file
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import numpy as np
# 1. 定义原始3×3灰度图像
image = np.array([
[100, 150, 200],
[80, 120, 180],
[60, 90, 140]
], dtype=np.uint8)
print("原图:")
print(image)
print("-" * 20)
# 2. 变暗20每个像素值减20uint8会自动截断负数这里所有值减20后均为正无溢出
image_dark = image - 20
print("变暗20后")
print(image_dark)
print("-" * 20)
# 3. 裁剪左上角2×2区域image[0:2, 0:2]
image_crop = image_dark[0:2, 0:2]
print("裁剪左上角2×2后")
print(image_crop)
print("-" * 20)
# 4. 水平翻转使用np.fliplr()
image_flip = np.fliplr(image_crop)
print("水平翻转后:")
print(image_flip)