Projection system that adjusts for keystoning

Details Projection system that adjusts for keystoning Projection system that adjusts for keystoning

2007-07-03

2007-07-03

Perkey, W B (Department: 2851)

Optics: image projectors

Distortion compensation

For projection axis inclined to screen

C353S121000, C348S747000

Reexamination Certificate

active

11642608

ABSTRACT:
A system for adjusting keystoning in a projector may include sensing using an imaging device at least two boundaries defining a projection screen and determining a transformation to adjust the keystoning of an image projected from the projector. The image may be modified from the projector in accordance with the transformation and projecting the modified image from the projector, wherein the imaging device and the projector are maintained in a fixed relationship with respect to each other.

REFERENCES:
patent: 2002/0021418 (2002-02-01), Raskar
patent: 2003/0210381 (2003-11-01), Itaki
patent: 2004/0061838 (2004-04-01), Mochizuki et al.

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