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Asked by troy on 1 May 2013

I2 = imread('......'); I2 = rgb2gray (I2); N=8; %N= window size (8x8) [L,L]=size(I2); L2=L/N; S=zeros(L,L);

for i=1:L2 for j=1:L2 S=I2((i-1)*N+1:i*N,(j-1)*N+1:j*N); theSum(i, j) = sum(S(:));

end; end;

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Answer by the cyclist on 1 May 2013

Accepted answer

Do you mean, for example,

i=1:2:L2

?

This would loop over i = 1,3,5, ..., L2

## 2 Comments

Direct link to this comment:http://www.mathworks.com/matlabcentral/answers/74243#comment_146637

To get

whichvalue to be an odd number?Direct link to this comment:http://www.mathworks.com/matlabcentral/answers/74243#comment_146714

I mean to access i and j to be odd number. i and j value will calculate odd number only. i=1,i=3,i=5......... j=1,j=3,j=5.........