Alignment optimization in image display systems employing multi-camera image acquisition
US7740361B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 2007 |
| Grant date | Jun 22, 2010 |
| Priority date | — |
| Expiry date | Nov 22, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3185
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention relates to projection systems where one or more projectors are utilized to project a video, a still image, or combinations thereof. More particularly, the present invention relates to methods of calibrating and operating such systems. According to one embodiment of the present invention, a method of operating an image display system is provided. According to the method, one or more image sensors acquire respective overlapping portions I1, I2 of a projected image. Screen position coordinates for image fiducials in the first and second portions I1, I2 of the projected image are identified and used to establish first and second sets of distance metrics D1, D2 for the first and second portions of the projected image. A global point set is constructed from the first and second sets of distance metrics D1, D2. Global points within a region where the first and second portions I1, I2 of the projected image overlap are derived from only one of the first and second sets of distance metrics D1, D2. In this manner, a first subset G1 of the global point set will comprise fiducial positions derived from only one of the first and second sets of distance metrics D1, D2 and a …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.