In Image Restoration problem, (still image not video image), why Peak Signal-to-Noise Ratio (PSNR) should not be more than 50 or 55 dB? I got 63 dB and they say it is wrong. why and How it is wrong?
Typical PSNR values
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If your pixels are represented using 8 bits per sample, the maximum possible pixel value of the image is 255.
20*log10(255) = 48 dBthe mean squared error (MSE) of noise is not considered yet. The typical compression ratio of jpeg is no less than 7. In that case the MSE is around 0.224, and the corresponding PSNR is 54 dB. So you probably will not get the PSNR as high as 63 dB.