Pointing position detection device, presentation system, and method, and computer-readable medium
US6512507B1 · kind B1 · utility
73Cited by
15References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 26, 1999 |
| Grant date | Jan 28, 2003 |
| Priority date | — |
| Expiry date | Mar 26, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/04892
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a pointing position detection device that can automatically sense a pointing position within a display region. This pointing position detection device comprises a CCD camera acquiring an image of a display region in which an image has been displayed; a binary-data processing section for detecting a pointing position of a shadow region or an actual image region that is an image region of a pointing image included within an image-acquisition area, based on an image-acquisition signal of the CCD camera 14; and a pointing coordinates detection section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.