29 lines
671 B
Python
29 lines
671 B
Python
import numpy as np
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# 1. 定义原始3×3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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print("-" * 20)
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# 2. 变暗20：每个像素值减20（uint8会自动截断负数，这里所有值减20后均为正，无溢出）
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image_dark = image - 20
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print("变暗20后：")
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print(image_dark)
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print("-" * 20)
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# 3. 裁剪左上角2×2区域：image[0:2, 0:2]
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image_crop = image_dark[0:2, 0:2]
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print("裁剪左上角2×2后：")
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print(image_crop)
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print("-" * 20)
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# 4. 水平翻转：使用np.fliplr()
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image_flip = np.fliplr(image_crop)
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print("水平翻转后：")
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print(image_flip) |