Nonparametric imaging tracker
US4868871A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 13, 1987 |
| Grant date | Sep 19, 1989 |
| Priority date | — |
| Expiry date | Aug 13, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A nonparametric imaging tracker is disclosed that first declares (10) a reference subimage comprising a plurality of image pixels, each pixel having a numerical light intensity level. The tracker then finds (12) a reference distribution of intensity levels in the reference subimage. A plurality of candidate subimages each having a plurality of pixels are then acquired (20). The intensity level distribution of each candidate subimage is compared to the reference distribution, and a statistic for each candidate subimage is computed based on this comparison (26, 28). One of the candidate subimages is then selected based on the value of its statistic (30, 36, 40). A preferred comparison and statistic calculation sequence includes the Kolmogorov-Smirnov test.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.