Coding device predicting chrominance based on downsampled luminance
US11051021B2 · kind B2 · utility
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Key dates
| Filing date | Sep 7, 2018 |
| Grant date | Jun 29, 2021 |
| Priority date | — |
| Expiry date | Sep 7, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/70
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The coding efficiency and the amount of processing can be further improved in methods that use the correlation between spatial and temporal directions to estimate parameters that are required for predictions. In LM prediction that predicts pixel values of chrominance, based on pixel values of luminance, an index for a filter that downsamples a luminance image is adaptively signalled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.