Rear projection imaging system with image warping distortion correction system and associated method
US7876384B2 · kind B2 · utility
2Cited by
5References
4Claims
0Family size
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Key dates
| Filing date | Aug 28, 2007 |
| Grant date | Jan 25, 2011 |
| Priority date | — |
| Expiry date | Mar 1, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/10
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A rear projection imaging system with an image warping distortion correction system using a camera and processing unit to generate a warping map that corrects for image distortion. The warping map is generated in an iterative process by displaying a known pattern on a viewing screen and, through the use of a camera, having a microprocessor determine the location and shape of the pattern on the screen. The microprocessor then compares the displayed image to the original reference image, calculates the distortion effects present in the projection optics, and generates a warping map.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.