Image distortion correcting apparatus and method thereof

Details Image distortion correcting apparatus and method thereof Image distortion correcting apparatus and method thereof

2006-11-28

2006-11-28

Hsia, Sherrie (Department: 2622)

Television

Video display

Projection device

C345S215000, C345S215000

Reexamination Certificate

active

07142258

ABSTRACT:
An image distortion correcting apparatus is provided tat is capable of correcting keystone distortion and pincushion distortion in a video display device. The apparatus may include a reference image generating device for generating a reference image and setting a coordinate of the reference image. A displacement measuring device may display the reference image on a screen and measure a coordinate of the displayed image. A distortion information extracting device may extract distortion information on the basis of a coordinate value of the set reference image and a coordinate value of the measured image and generating inverse-distortion information. Still further, a distortion correcting device may generate an inverse-distorted (pre-warping) image of the reference image on the basis of the generated inverse-distortion information.

REFERENCES:
patent: 6288689 (2001-09-01), Shikama
patent: 6491400 (2002-12-01), Chen et al.
patent: 1659867 (2005-08-01), None

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