Psnr high or low

1. Is it better to have a higher PSNR?
2. What value of PSNR is good?
3. What is a good PSNR for video?
4. How do I evaluate my PSNR?

Is it better to have a higher PSNR?

Description. The PSNR block computes the peak signal-to-noise ratio, in decibels, between two images. This ratio is used as a quality measurement between the original and a compressed image. The higher the PSNR, the better the quality of the compressed, or reconstructed image.

What value of PSNR is good?

Typical values for the PSNR in lossy image and video compression are between 30 and 50 dB, provided the bit depth is 8 bits, where higher is better. The processing quality of 12-bit images is considered high when the PSNR value is 60 dB or higher. For 16-bit data typical values for the PSNR are between 60 and 80 dB.

What is a good PSNR for video?

The score ranges depending on bit-depth. For 8-bit video, a typical range for scores is 25-50dB with higher values being a better result. 45dB or higher is considered to be excellent.

How do I evaluate my PSNR?

Express the PSNR in decibels. From Step 1, we have the decibel value LdB as LdB = 10 log10 (P1/P0). Now let P1 = MAX^2 and P0 = MSE. We then have PSNR = 10 log10(MAX^2/MSE) = 10 log10(MAX/(MSE)^(1/2))^2 = 20 log10(MAX/(MSE)^(1/2)).