Examples
The following three images show the amazing quality difference between PGF and JPEG. The first and the second image are visual representations of PGF coded images, while the third is a real JPEG image. We have measured the quality of the images with the peak signal to noise ratio (PSNR).1st (PGF) image: compression ratio = 1:12, quality (PSNR) = 39 dB
2nd (PGF) image: compression ratio = 1:98, quality (PSNR) = 30 dB
3rd (JPEG) image: compression ratio = 1:98, quality (PSNR) = 27 dB
With PGF you obviously get a better image quality at the same compression ratio. While a PSNR of 3 dB more seems not a lot, the visual difference is huge. Check it out!
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