Say, I have original image, noised and denoised. By PSNR value I want to find out how good does my denoising algorithm works.
For which pair of the images should I calculate it? I've tried it for original+noised, noised+denoised and original+denoised and got PSNR = 28, 29 and 31 respectively.
What value shall be appropriate?
I'm calculating PNSR as here.