Backwards-compatible delivery of digital cinema content with higher dynamic range and related preprocessing and coding methods
US8866975B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2014 |
| Grant date | Oct 21, 2014 |
| Priority date | — |
| Expiry date | Apr 25, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/36
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Methods and systems for image processing and delivery of higher dynamic range cinema content are disclosed. A digital cinema signal with a lower dynamic range is obtained from a digital cinema signal with a higher dynamic range, for example through mapping. The lower dynamic range digital cinema signal is encoded and decoded at the transmitting end. The decoded lower dynamic range digital cinema signal is normalized to produce a set of normalization parameters which enable the mapping process at the receiving end to produce a final image with higher dynamic range that is of a higher quality. Alternatively, the higher dynamic range digital cinema signal is also encoded and decoded at the transmitting end, to produce a set of normalization parameters which enable the mapping process at the receiving end to produce a final image with higher dynamic range that is of a higher quality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.