Three-dimensional object tracking using distributed thin-client cameras
US8059153B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2004 |
| Grant date | Nov 15, 2011 |
| Priority date | — |
| Expiry date | Jun 19, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/63
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An object tracking system which includes a plurality of camera devices, each of which captures image data, a plurality of thin-client processors, each of which is connected to a respective camera device via a local connection, each thin-client processor hosting a thin-client application that processes the captured image data to obtain two-dimensional foreground region information by using a background subtraction algorithm, and a server hosting an object tracking application that receives the foreground region information from each thin-client processor via a network and generates a three-dimensional visual hull corresponding to each foreground region represented in the received foreground region information, wherein the object tracking application generates identification and position data corresponding to each three-dimensional visual hull. The thin-client application uses two-dimensional object tracking to identify each object in the foreground region information, and sends each object identity to the object tracking application with the foreground region information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.