Selecting the 4-neighbours of a pixel [closed]

问题

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Closed 6 years ago.

How can I select the 4-neighbours of a pixel in matlab?

Thanks.

回答1:

If the the image is img and the current pixel indices are i and j, then the four neighbors will be:

img(i-1,j);
img(i+1,j);
img(i,j-1);
img(i,j+1);

来源：https://stackoverflow.com/questions/14771631/selecting-the-4-neighbours-of-a-pixel