Method of compression of video telephony images
US8175375B2 · kind B2 · utility
7Cited by
0References
56Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2002 |
| Grant date | May 8, 2012 |
| Priority date | — |
| Expiry date | Feb 22, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/94
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of compression of videotelephony images characterized by: creating (10) a learning base containing images; centering the learning base about zero; determining component images by principal component analysis (12); and keeping a number of significant principal components (14).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.