Adaptive chroma quantization in video coding for multiple color imaging formats
US10477212B2 · kind B2 · utility
4Cited by
1References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 10, 2017 |
| Grant date | Nov 12, 2019 |
| Priority date | — |
| Expiry date | Nov 23, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/147
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Methods to improve the quality of coding high-dynamic range (HDR) signals are presented. Instead of using a single chroma quantization table for all color formats, a video encoder may adaptively use separate tables for each one, and transmit the table's ID to a decoder. Examples for chroma quantization tables for video content encoded in the YCbCr (PQ) and ICtCp (PQ) color formats under a variety of color gamut containers are provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.