a=imread('lena.jpg') B=a(1:2:end) B1=reshape(B,128,256,3) subplot(2,2,4) imshow(B1) 修改代码
时间: 2024-04-12 11:30:09 浏览: 156
你可以修改代码如下:
```python
a = imread('lena.jpg')
B = a(1:2:end,:,:)
B1 = reshape(B, 128, 256, 3)
subplot(2, 2, 4)
imshow(B1)
```
这样就完成了代码的修改。注意,我将 `B` 的维度调整为 `(128, 256, 3)`,以便在 `imshow` 中正确显示图像。
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