Implementing equation doe 3x3 matrix

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FIR on 19 Dec 2012
I have a image below ,please tell how to implement the equation for a 3x3 matrix
please assist
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Accepted Answer

Matt J on 19 Dec 2012
Edited: Matt J on 19 Dec 2012
qVMF=median(q(:));
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Matt J on 19 Dec 2012
Edited: Matt J on 19 Dec 2012
Yes, the median is the known solution to this problem, which you can also verify by comparing it with the output of the code in your Answer.
The mean minimizes the sum of squared differences.
It would get slightly complicated if there were an even number of pixels, because then the median wouldn't be attained at any of the q(i). Here, however, there are an odd number of pixels.

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More Answers (1)

Walter Roberson on 19 Dec 2012
[minsum, minidx] = min( sum(abs(bsxfun(@minus, q(:), q(:).'))) );
qVFM = q(minidx);
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