System and method for calibrating an image projection system
US7893393B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 2007 |
| Grant date | Feb 22, 2011 |
| Priority date | — |
| Expiry date | Dec 20, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3147
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and system for calibrating and operating projection systems where one or more projectors are utilized to project an image. One or more projectors are oriented to project an image on a projection screen and one or more image sensors are oriented to acquire the projected image. Three-dimensional position coordinates of the respective image fiducials as projected on the screen are identified by applying three-dimensional mapping functions to represent the manner in which two-dimensional points in a projector frame map to three-dimensional points on the projection screen. Parametric functions are fit to a neighborhood of points representing the three-dimensional image fiducial position coordinates and corresponding parametric models are generated. The projectors are then operated in accordance with geometric calibration data generated from validation and correction of the fiducial coordinates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.