Method of and system for activity-based frequency weighting for FGS enhancement layers
US6792044B2 · kind B2 · utility
20Cited by
6References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 16, 2001 |
| Grant date | Sep 14, 2004 |
| Priority date | — |
| Expiry date | May 27, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/33
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides methods and systems to determine the frequency weighting matrix that will provide the best image quality during MPEG4 FGS enhancement layer encoding, and to change this determination on a scene characteristics change basis, thereby optimizing the resulting output picture quality, especially in bandwidth-deprived applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.