Calibration device, calibration method, optical device, image-capturing device, projection device, measuring system, and measuring method
First Claim
1. A calibration device for an optical device provided with a two-dimensional image conversion element having a plurality of pixels, and an optical system that forms an image-formation relationship between the image conversion element and the three-dimensional world coordinate space, the calibration device comprising:
- a calibration-data acquisition unit that acquires calibration data representing the correspondence between two-dimensional pixel coordinates in the image conversion element and three-dimensional world coordinates in the world coordinate space; and
a parameter calculating unit that calculates parameters of a camera model by applying, to the calibration data acquired by the calibration-data acquisition unit, a camera model that expresses two coordinate values of the three-dimensional world coordinates as functions of the other one coordinate value of the world coordinates and the two coordinate values of the two-dimensional pixel coordinates.
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Abstract
A calibration device for an optical device including a two-dimensional image conversion element having a plurality of pixels and an optical system that forms an image-formation relationship between the image conversion element and the three-dimensional world coordinate space. The calibration device includes: a calibration-data acquisition unit that acquires calibration data representing the correspondence between two-dimensional pixel coordinates in the image conversion element and three-dimensional world coordinates in the world coordinate space; and a parameter calculating unit that calculates parameters of a camera model by applying, to the calibration data acquired by the calibration-data acquisition unit, a camera model in which two coordinate values of the three-dimensional world coordinates are expressed as functions of the other one coordinate value of the world coordinates and the two coordinate values of the two-dimensional pixel coordinates.
47 Citations
31 Claims
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1. A calibration device for an optical device provided with a two-dimensional image conversion element having a plurality of pixels, and an optical system that forms an image-formation relationship between the image conversion element and the three-dimensional world coordinate space, the calibration device comprising:
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a calibration-data acquisition unit that acquires calibration data representing the correspondence between two-dimensional pixel coordinates in the image conversion element and three-dimensional world coordinates in the world coordinate space; and a parameter calculating unit that calculates parameters of a camera model by applying, to the calibration data acquired by the calibration-data acquisition unit, a camera model that expresses two coordinate values of the three-dimensional world coordinates as functions of the other one coordinate value of the world coordinates and the two coordinate values of the two-dimensional pixel coordinates. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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13. A calibration method for an optical device provided with a two-dimensional image conversion element having a plurality of pixels, and an optical system that forms an image-formation relationship between the image conversion element and the three-dimensional world coordinate space, the calibration method comprising:
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a step of acquiring calibration data representing the correspondence between two-dimensional pixel coordinates in the image conversion element and three-dimensional world coordinates in the world coordinate space; and a step of calculating parameters of a camera model by applying, to the acquired calibration data, a camera model that expresses two coordinate values of the three-dimensional world coordinates as functions of the other one coordinate value of the world coordinates and the two coordinate values of the two-dimensional pixel coordinates. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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Specification