Image compression
US6956973B1 · kind B1 · utility
10Cited by
8References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1998 |
| Grant date | Oct 18, 2005 |
| Priority date | — |
| Expiry date | Oct 31, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/13
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of image encoding using subband decomposition followed by modified zerotree coding with a symbols for zero and significant zerotrees and isolated zeroes and isolated significant coefficients.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.