How to decide the weight of Luma and Chroma distortion in the RDO process?

StackOverflow https://stackoverflow.com/questions/20464552

  •  30-08-2022
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Question

In the HEVC reference software HM, in the RDO process, the distortion contains the luma and chroma, and they have different weights. Through debugging the codes, I find the chroma weight is higher than 1. So does anyone know how to decide the the weights? Are there any papers talking about this problem?

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Solution

I will answer my own question. This topic is discussed in the proposal JCT-VC F386. It is about the RDO of Chroma.

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