Method and device to estimate motion in a sequence of moving pictures
US4853775A · kind A · utility
45Cited by
6References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 22, 1988 |
| Grant date | Aug 1, 1989 |
| Priority date | — |
| Expiry date | Mar 22, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/51
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The method consists in estimating motion by performing a gradient algorithm which minimalizes the mean square deviation of local luminance variations of the present pel of the picture with the pel that is homologous with it in the prior picture, in initializing the execution of the algorithm by displacement values estimated along several directions within the close causal neighborhood of the present pel and in propagating each estimate in the scanning direction if the picture lines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.