Differential coding of motion vectors using the median of candidate vectors
US5905535A · kind A · utility
149Cited by
3References
12Claims
0Family size
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Key dates
| Filing date | Sep 27, 1995 |
| Grant date | May 18, 1999 |
| Priority date | — |
| Expiry date | Sep 27, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/577
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A process for differential coding of a motion vector associated with a macro-block, including the steps: of determining the components of the said motion vector, of determining a prediction vector, each component of which is equal to the median value of the corresponding components of at least three candidate motion vectors, a candidate motion vector being a vector associated with a previously coded macro-block, and of subtracting the components thus obtained from the components of the vector to be coded. Implementation of the process is included.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.