What was problem saving this question?

function [Ps]=psnr(originalImage,embeddedImage)
    I=double(originalImage);
    B=double(embeddedImage);
    MSE=mean(mean((I-B).^2));
    MAXI=255;  %MAXI is the maximum possible pixel value of the image. 
%When the pixels are represented using 8 bits per sample, this is 255.
Ps=10*log10(MAXI^2/MSE);
end

here call function in embedd

   Ps=psnr(originalImage,embeddedImage);
    disp(Ps);

This error

Error in psnr (line 4)
    MSE=mean(mean((I-B).^2));

Error in Embed (line 141)
  Ps=psnr(originalImage,embeddedImage);

Answer 1

[Walter Roberson]

You did not show us what the error message was.

I suspect that your originalImage and your embeddedImage are not the same size()

Answer 2

[Reem Al Shehri]

The error MSE=mean(mean((I-B).^2));

[Walter Roberson]

That tells us where the error was, but not what the error was. For example just before that did it say,

"Error in license manager, -97"

or did it say

"Matrix dimensions must agree"

?