Method and device for encoding and decoding a HDR picture and a LDR picture
US10148958B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 27, 2015 |
| Grant date | Dec 4, 2018 |
| Priority date | — |
| Expiry date | Aug 11, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/98
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
At least one of the present embodiments generally relates to a method for encoding a HDR picture and a first LDR picture, the method comprising obtaining a second LDR picture responsive to a ratio between the HDR picture and a backlight picture and encoding the first LDR picture and the second LDR picture by predicting one of the first and second LDR pictures by the other one of the first and second LDR pictures. The method wherein it further comprises, before encoding, adjusting the first LDR picture responsive to the backlight picture. The disclosure relates also to a method and device for decoding an LDR picture providing a lower dynamic range depiction of the picture content of an HDR picture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.