Real-time tracking of non-rigid objects using mean shift
US6590999B1 · kind B1 · utility
36Cited by
3References
33Claims
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Key dates
| Filing date | Feb 14, 2000 |
| Grant date | Jul 8, 2003 |
| Priority date | — |
| Expiry date | Feb 14, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/24
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for real-time tracking of a non-rigid target. The tracking is based on visual features, such as color and/or texture, where statistical distributions of those features characterize the target. A degree of similarity (&rgr;(y0)) is computed between a given target (at y0) in a first frame and a candidate target (at y1) in a successive frame, the degree being expressed by a metric derived from the Bhattacharyya coefficient. A gradient vector corresponding to a maximization of the Bhattacharyya coefficient is used to derive the most probable location of the candidate target in the successive frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.