Rear projection imaging system with image warping distortion...

Details Rear projection imaging system with image warping distortion... Rear projection imaging system with image warping distortion...

2011-01-25

2011-01-25

Ometz, David L (Department: 2622)

Television

Video display

Projection device

C348S744000, C348S746000, C348S756000, C359S456000, C353S069000

Reexamination Certificate

active

07876384

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.

REFERENCES:
patent: 6618076 (2003-09-01), Sukthankar et al.
patent: 6836298 (2004-12-01), Song et al.
patent: 7055958 (2006-06-01), Tajima
patent: 7196741 (2007-03-01), Hicks
patent: 7227592 (2007-06-01), Waters et al.

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