Method and apparatus for approximating depth of an object's placement onto a monitored region with applications to virtual interface devices
US7006236B2 · kind B2 · utility
172Cited by
21References
40Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 17, 2002 |
| Grant date | Feb 28, 2006 |
| Priority date | — |
| Expiry date | Oct 31, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2200/1633
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Structured light is directed across a monitored region. An image is captured of a light pattern that forms on the object as a result of the object intersecting the structured light when the object is placed at a first position in the monitored region. A geometric characteristic is identified of the image of the light pattern. The geometric characteristic is variable with a depth of the first position relative to where the image is captured. The depth of the first position is approximated based on the measured geometric characteristic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.