Technique for bit-accurate comfort noise addition
US7680356B2 · kind B2 · utility
22Cited by
15References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 12, 2004 |
| Grant date | Mar 16, 2010 |
| Priority date | — |
| Expiry date | Mar 19, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20204
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The addition of comfort noise to an image serves to hide compression artifacts. To facilitate comfort noise addition, supplemental information accompanying a video image contains at least one parameter that specifies an attribute regarding comfort noise. Typically, the supplemental information includes parameters that function to turn the comfort noise on and off, as well as to indicate the level of noise to add, based on the expected level of compression artifacts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.