完成作业X
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import numpy as np.py
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30
import numpy as np.py
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import numpy as np
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# 定义原始图像矩阵
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image = np.array([
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[100, 150, 200],
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[80, 120, 180],
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[60, 90, 140]
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], dtype=np.uint8)
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print("原图:")
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print(image)
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print("-" * 20)
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# 1. 变暗20:每个像素值减20
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# 注意:uint8类型不会出现负数,自动取模(小于0会变成255附近)
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image_dark = image - 20
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print("1. 变暗20后的图像:")
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print(image_dark)
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print("-" * 20)
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# 2. 裁剪左上角:保留 image[0:2, 0:2]
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image_crop = image[0:2, 0:2]
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print("2. 裁剪左上角2*2区域:")
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print(image_crop)
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print("-" * 20)
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# 3. 水平翻转:使用 np.fliplr()
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image_flip = np.fliplr(image)
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print("3. 水平翻转后的图像:")
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print(image_flip)
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