Vision-based pointer tracking and object classification method and apparatus
US7148913B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 12, 2002 |
| Grant date | Dec 12, 2006 |
| Priority date | — |
| Expiry date | Jan 7, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/107
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A vision-based pointer tracking and object recognizing system is presented. The system comprises a computer system including a processor, a memory coupled with the processor, an input coupled with the processor for receiving a series of image frames from a camera, and an output coupled with the processor for outputting a path of a pointer. The computer system includes a tracking system and a recognition system which are configured to accurately and efficiently track the fingertip of a user in order to allow the user to perform coarse segmentation of an object in preparation for object classification. The tracking system includes a Robust Tracking Filter that accommodates uncertainties. The object recognition system incorporates an invariant object recognition technique that allows objects to be recognized despite changes in user viewpoint.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.