Asked by Elysi Cochin
on 24 Jan 2013

please can some help me write the equations below in matlab.... in the following link....

http://img545.imageshack.us/img545/8454/equations.png

please do reply.....

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Answer by Walter Roberson
on 24 Jan 2013

Accepted answer

If I read the equation correctly, then Imu and Isigma do not depend on the x and y parameters and are instead the same for all rows and columns.

Imu = mean2(f) Isigma = std(f(:), 1); %the biased standard deviation

Show 7 older comments

Elysi Cochin
on 6 Feb 2013

sir like mean2 function is there any function to calculate "variance"..... is variance and standard deviation the same??? please do reply sir.....

Walter Roberson
on 6 Feb 2013

Isigma = var(double(f(:)), 1);

Elysi Cochin
on 6 Feb 2013

thank u sir...

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