I have been trying to determine why is PSNR used instead of SNR for image quality metrics?
I have read through several books and most just say that PSNR is used instead of SNR, but don't give a reason as to why.
I also read these posts:
But I still feel like they don't explain clearly why PSNR is used instead of SNR.
I know that PSNR measures how the peak signal intensity compares to the mean squared error whereas SNR measures signal power compared to noise, but this doesn't help me reach an intuitive conclusion as to why to use PSNR instead of SNR.
Can someone please explain this?