Integrated image reshaping and video coding
US10992941B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2018 |
| Grant date | Apr 27, 2021 |
| Priority date | — |
| Expiry date | Jun 29, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/34
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Given a sequence of images in a first codeword representation, methods, processes, and systems are presented for integrating reshaping into a next generation video codec for encoding and decoding the images, wherein reshaping allows part of the images to be coded in a second codeword representation which allows more efficient compression than using the first codeword representation. A variety of architectures are discussed, including: an out-of-loop reshaping architecture, an in-loop-for intra pictures only reshaping architecture, an in-loop architecture for prediction residuals, and a hybrid in-loop reshaping architecture. Syntax methods for signaling reshaping parameters, and image-encoding methods optimized with respect to reshaping are also presented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.