Title:
エンドツーエンド単一レイヤの下位互換性のある符号化パイプラインにおける、高忠実度の完全参照及び低減参照符号化
Document Type and Number:
Japanese Patent JP6964807
Kind Code:
B2
Abstract:
3D mapping statistics are generated for a first image of a first dynamic range and a second image of a second dynamic range different from the first dynamic range. Multivariate multiple regression (MMR) coefficients are generated by solving an optimization problem formulated using an MMR matrix built with the 3D mapping statistics without a letterbox constraint, and used to generate chroma mappings for predicting chroma codeword values of the second image. It is determined whether a letterbox exists in the images. If so, it is determined whether the chroma mappings accurately predict chroma codeword values in the second image. A reconstructed image generated by a recipient device by backward reshaping one of the images is rendered by a display device operating in conjunction with the recipient device.
Inventors:
Thorn, chain
Kadu, Harshad
Su, Gwan-Mean
Kadu, Harshad
Su, Gwan-Mean
Application Number:
JP2020563706A
Publication Date:
November 10, 2021
Filing Date:
May 09, 2019
Export Citation:
Assignee:
Dolby Laboratories Licensing Corporation
International Classes:
H04N19/85; H04N19/30; H04N19/46
Foreign References:
| WO2017165494A2 | ||||
| WO2018005705A1 | ||||
| WO2018049335A1 |
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Osamu Miyazaki
Tadahiko Ito
Osamu Miyazaki