Segment-based reshaping for coding high dynamic range video
US10902601B2 · kind B2 · utility
1Cited by
3References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2018 |
| Grant date | Jan 26, 2021 |
| Priority date | — |
| Expiry date | Jan 16, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/98
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Given a standard-dynamic range (SDR) video input, techniques for generating and compressing composer metadata describing inverse luma and chroma reshaping functions are described. Given the SDR input, the composer metadata allow a decoder to generate a corresponding output in high-dynamic range. Three techniques are proposed: a static, sequence-based, architecture, a two-stage, scene-based, distributed solution with a centralized post-processing method, and a single-stage distributed solution using overlapped segments. Techniques to reduce the amount of transmitted composer metadata are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.