Interframe wavelet video coding method
US7292635B2 · kind B2 · utility
1Cited by
6References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 16, 2004 |
| Grant date | Nov 6, 2007 |
| Priority date | — |
| Expiry date | Sep 30, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/13
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An interframe wavelet video coding (IWVC) method by which an average temporal distance (ATD) is minimized is provided. The IWVC method comprises receiving a group-of-frames and decomposing the group-of-frames into difference frames and first average frames between the frames in a first forward temporal direction and a backward temporal direction, wavelet-decomposing the first difference frames and the first average frames, and quantizing coefficients resulting from the wavelet-decomposition to generate a bitstream. The IWVC method provides improved video coding performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.