Calculate MSE and PSNR

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rashed 2014-1-15

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https://ww2.mathworks.cn/matlabcentral/answers/112436-calculate-mse-and-psnr

编辑： Walter Roberson 2016-1-11

I have develop a steganography algorithm in C#. Now I want to analysis of my cover image and Stego image (After steganography apply). So i want to calculate MSE, PSNR of these image. I found a code here http://www.mathworks.com/matlabcentral/answers/81048-mse-mean-square-error. Is that is ok? But when i run this code i have the following output

I want to know what the output actually mean.

Thanks in advanced.

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Karbala'a Unvi. Science 2015-3-7

that is because you are using an RGB image not a gray level one. You will say how do I know that? I had the same message, then I checked my code I found that each value is for a color band of the color image. When you change your images to gray it will gives you one value... Yours Z

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