Calibration apparatus, projector and calibration method

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9532020
APP PUB NO 20150319415A1
SERIAL NO

14651107

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A calibration apparatus calibrating a projection unit projecting light-rays includes: an imaging unit taking an image of a surface of an object having a location and an attitude, the light-rays projected onto the surface by the projection unit; a location-and-attitude estimation unit estimating the location and the attitude of the surface based on the image; a reflection-point estimation unit estimating, based on the estimated location and the attitude, a reflection point at which one of the light-rays is reflected by the surface; and an identification unit identifying both a passing point that the one of the light-rays passes and a direction in which the one of the light-rays passes the passing point, or identifying only the direction, based on multiple reflection points obtained by the reflection-point estimation unit with respect to multiple different locations and/or multiple different attitudes of the surface.

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Patent Owner(s)

Patent OwnerAddress
RICOH COMPANY LTDTOKYO 143-8555

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hara, Takayuki Kanagawa, JP 63 465

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