Asked by pammy
on 16 Apr 2013

i've a grayscale image and i've divided it into discrete blocks of 8x8

Then, i've calculated the mean of each block and i want to check how one block is correlated to the other block

which type of correlation should i use?

xcorr2

corr2

or something else???

i want the correlation of two image blocks in the range -1, 0, 1

can anybody tell me how to do so?

i've used corrcoef

Error using bsxfun Mixed integer class inputs are not supported.

Error in cov (line 93) xc = bsxfun(@minus,x,sum(x,1)/m); % Remove mean

Error in corrcoef>correl (line 209) r = cov(x);

Error in corrcoef (line 92) r = correl(x);

93 xc = bsxfun(@minus,x,sum(x,1)/m); % Remove mean

but the above error occurs.

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