How to calculate MSE (Mean Squared Error)?

What is the instruction to calculate mean squared error of two images?

[hudof najeeb]

when I am writing

disp(['MSE ' measerr(CoverImg,stegImg)])

the result is 3. it is error because it must be btw 0 and 1. how to solve it?

Answer 1

[Walter Roberson]

immse()

[Walter Roberson]

measerr can return mean squared error, but it does so as the second output.

[~, MSE] = measerr(CoverImg,stegImg);
fprintf('MSE: %.5g\n', MSE)

[hudof najeeb]

Thank you Sir...This is exactly what I wanted