Numerical comparison of different upconversion methods|
(Lena image resampled to 128x128 and restored)
Peak Signal to Noise Ratio is a mathematical metrics to measure how well the method approximates the original image. Small improvements often represent drastic improvement in percieved quality. Subjective visual comparision however may not correspond to better PSNR values.|
Speeds below 0.1 sec cannot be well measured due to random (stochastic) events of file I/O and other factors.
|Comparison chart of different upconversion methods|