Target tracking
US8121346B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 8, 2007 |
| Grant date | Feb 21, 2012 |
| Priority date | — |
| Expiry date | Jul 27, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/772
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and system are disclosed for tracking a target imaged in video footage. The target may, for example, be a person moving through a crowd The method comprises the steps of: identifying a target in a first frame; generating a population of sub-templates by sampling from a template area defined around the target position; and searching for instances of the sub-templates in a second frame so as to locate the target in the second frame. Sub-templates whose instances are not consistent with the new target position are removed from the population and replaced by newly sampled sub-templates. The method can then be repeated so as to find the target in further frames. It can be implemented in a system comprising video imaging means, such as a CCTV camera, and processing means operable to carry out the method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.