Optics: image projectors – Distortion compensation – For projection axis inclined to screen
Reexamination Certificate
2007-09-18
2007-09-18
Perkey, W. B. (Department: 2851)
Optics: image projectors
Distortion compensation
For projection axis inclined to screen
C348S746000, C382S255000, C382S256000
Reexamination Certificate
active
11082978
ABSTRACT:
A projector includes an image projection section, a sensor that senses a projected first calibration image at a low resolution and generates first sensing information, senses the first calibration image at a high resolution and generates third sensing information, and senses a second calibration image at a high resolution and generates second sensing information, a projection area detection section that generates projection area information, based on the first and second sensing information, a projection-target area detection section that generates projection-target area information, based on the first, second, and third sensing information, and an image distortion correction section that corrects distortion of an image projected by the image projection section, based on the projection area information and the projection-target area information.
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U.S. Appl. No. 11/083,033, filed Mar. 18, 2005, Hideki Matsuda, et al.
Kobayashi Masanobu
Matsuda Hideki
Perkey W. B.
Seiko Epson Corporation
Sever Andrew T
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