26 lines
576 B
Python
26 lines
576 B
Python
import numpy as np
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# 定义3x3灰度图像
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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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# 1. 变暗20：每个像素值减20（需确保数值非负，uint8会自动截断，这里手动保证）
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image_dark = np.clip(image - 20, 0, 255)
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print("\n变暗20后：")
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print(image_dark)
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# 2. 裁剪左上角2x2区域
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image_crop = image[:2, :2]
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print("\n裁剪左上角2x2区域：")
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print(image_crop)
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# 3. 水平翻转
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image_flip = np.fliplr(image)
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print("\n水平翻转：")
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print(image_flip) |