Daala: Perceptual Vector Quantization (PVQ)

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17 pointsderf_3 comments

The bit on normalized vector quantization reminded me of the normal vector quantization technique on the unit sphere used by Java3D https://docs.oracle.com/cd/E17802_01/j2se/javase/technologie...

Hm. The pictures at the bottom are only really obvious if I middle click to make them big.

Yeah, load them in two browser tabs and switch back and forth for best effect.

Though even at the small size you can see how badly JPEG gets the colors wrong at this rate.