Method of coding and decoding image
US6483877B2 · kind B2 · utility
26Cited by
13References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 13, 2001 |
| Grant date | Nov 19, 2002 |
| Priority date | — |
| Expiry date | Nov 13, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/145
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of simplifying the arithmetic operation in a global motion compensation process approximates the motion vector field of the whole image without using many parameters. Motion vectors in the global motion compensation are found by the interpolation and/or extrapolation of the motion vectors of a plurality of representative points 602, 603 and 604 having particular features in the spatial distance thereof. Since the shift operation can be substituted for the division for synthesizing a predicted image of global motion compensation, the processing using a computer or a dedicated hardware is simplified.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.