Method and device for detecting reliability of a field of movement vectors
US7194034B2 · kind B2 · utility
5Cited by
6References
16Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 13, 2002 |
| Grant date | Mar 20, 2007 |
| Priority date | — |
| Expiry date | Nov 20, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/521
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of detecting the reliability of a field of movement vectors of one image in a sequence of video images. The method includes a stage of calculating a stability parameter, Det_Stab(t), for the field. The parameter is based on a comparison (4), over two successive images, of the number of occurrences of the majority vectors of the movement-vectors fields of each of these images. A field is defined as stable if the variation in the number of occurrences lies within a predefined bracket. Reliability (7) is decided on the basis of this stability parameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.