Matrix Zero padding for filter (image processing)

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YongHyun
YongHyun 2016-5-14
回答： Azzi Abdelmalek 2016-5-14
I have a matrix and size 5x5. I want to zero padding between each row and column. Thus, result matrix is 9x9 after zero padding. I'll use this in wavelet zero-padding. Thanks!!
matrix = ones(5)
result_matrix = [1 0 1 0 1 0 1 0 1;
0 0 0 0 0 0 0 0 0;
1 0 1 0 1 0 1 0 1;
0 0 0 0 0 0 0 0 0;
1 0 1 0 1 0 1 0 1;
0 0 0 0 0 0 0 0 0;
1 0 1 0 1 0 1 0 1;
0 0 0 0 0 0 0 0 0;
1 0 1 0 1 0 1 0 1]

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采纳的回答

Andrei Bobrov
Andrei Bobrov 2016-5-14
a = ones(5);
out = zeros(size(a)*2-1);
out(1:2:end,1:2:end) = a;

更多回答（1 个）

Azzi Abdelmalek
Azzi Abdelmalek 2016-5-14
matrix = ones(5)
n=size(matrix,1)
result_matrix=zeros(2*n-1)
result_matrix(1:2:end,1:2:end)=matrix

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