Methods and devices for prediction dependent residual scaling for video coding
US12166989B2 · kind B2 · utility
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Key dates
| Filing date | Dec 20, 2021 |
| Grant date | Dec 10, 2024 |
| Priority date | — |
| Expiry date | Jun 19, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/30
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Methods are provided for reducing the computation complexity and on-chip memory requirements as well as the decoding latency introduced by LMCS. In one method, a luma prediction sample is obtained for decoding a luma residual sample, a scaling factor is derived using the luma prediction sample, the scaling factor is used to scale the luma residual sample, and the reconstructed luma sample is calculated by adding the luma prediction sample and the scaled luma residual sample.
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