Smooth chroma quantization curve for Daala

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6 Aug 2016

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This video is a before and after comparison of continuously varying the chroma quantization offset on still images from the subset1 corpus. The curve has been fitted to minimize the mean of per-pixel CIEDE2000 color distance. A tightly fitted curve was found by global optimization and relaxed to a simple function of similar shape. Daala is the code-name for a new video compression technology. The effort is a collaboration between Mozilla Foundation, Foundation and other contributors.

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