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How to dialte a binary matrix?

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Ahmad Adee
Ahmad Adee 2017-5-29
回答： Image Analyst 2017-5-29
I want to dilate a binary matrix (containing 0 and 1). So if I have a matrix 10x10 Note that dilation is all 4 sides (row left, row right, column left and column right). The Output matrix should be of the same size.
if true
A=
1 1 1 1 1 1 1 1 1
1 0 0 0 1 1 0 0 1
1 0 0 0 1 1 0 0 1
1 0 0 0 0 0 0 0 1
1 0 0 0 0 0 0 0 1
1 0 0 0 0 0 0 0 1
1 0 0 1 1 0 0 0 1
1 0 0 0 0 0 0 0 1
1 0 0 0 0 0 0 0 1
1 1 1 1 1 1 1 1 1
% i need this
B=
1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1
1 1 0 1 1 1 1 1 1
1 1 0 1 1 1 1 1 1
1 1 0 0 0 0 0 1 1
1 1 1 1 1 1 0 1 1
1 1 1 1 1 1 0 1 1
1 1 1 1 1 1 0 1 1
1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1
or this
B=
1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1
1 1 0 1 1 1 1 1 1
1 1 0 0 1 1 0 1 1
1 1 0 0 0 0 0 1 1
1 1 0 1 1 0 0 1 1
1 1 1 1 1 1 0 1 1
1 1 1 1 1 1 0 1 1
1 1 0 1 1 0 1 1 1
1 1 1 1 1 1 1 1 1
end

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回答（1 个）

Image Analyst
Image Analyst 2017-5-29
Use imdilate()
B = imdilate(A, ones(3));

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