Method and device for the estimation of motion in a sequence of moving images
US5089887A · kind A · utility
97Cited by
7References
38Claims
0Family size
Assignee
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Key dates
| Filing date | May 14, 1990 |
| Grant date | Feb 18, 1992 |
| Priority date | — |
| Expiry date | May 14, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/523
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The process consists in estimating motion by execution of a gradient algorithm (2, 3) which brings to a minimum the mean square deviation of the local variations of the current point of the image with the point that is homologous to it in the preceding image, in initializing (7) the execution of the algorithm by the displacement values estimated in several directions within the close vicinity of the current point and by an initial vector of temporal prediction of the displacement between successive frames of the image, then in propagating each estimation in the direction of scanning of the lines of the image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.