Optics: image projectors – Distortion compensation
Reexamination Certificate
2004-06-16
2008-12-30
Sever, Andrew T (Department: 2851)
Optics: image projectors
Distortion compensation
C348S745000
Reexamination Certificate
active
07470029
ABSTRACT:
To provide an image processing system and the like which can correct a distortion of a projected image through only a single sensor, a projector has a calibration image information generating section which generates image information used to display a rectangular calibration image; an image projection section which projects the calibration image onto a projection target, based on the image information; a sensing section which senses a region including the projected calibration image plane and generates sensing information; a projection area information generating section which generates shortest-distance projection area information based on the sensing information in such a state that a distance between the projection section and the projection target is different from the distance in an actual operating condition, and generates actual projection area information based on the sensing information in the actual operating condition; and a correction information generating section which generates image distortion correction information, based on the shortest-distance projection area information and actual projection area information.
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Oliff & Berridg,e PLC
Seiko Epson Corporation
Sever Andrew T
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