what is the maximum limit for psnr, means about what we can say that if value is less then this limit then it will be a bad psnr value and if value is greater then this limit then it will be good psnr value ?

what is the maximum limit for psnr, means about what we can say that if value is less then this limit then it will be a bad psnr value and if value is greater then this limit then it will be good psnr value ?

Answer 1

[Walter Roberson]

If you refer to the resource I pointed to in answering your previous question then you would see that the maximum PSNR is infinite. If there is no difference between two signals then their MSE will be 0 and when you divide by that 0 you will get infinity.

Typical PSNR for compression is listed in that resource. To repeat it, it was http://en.wikipedia.org/wiki/Peak_signal-to-noise_ratio

[shameen khan]

thank you so much sir