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Calibration device, calibration method, optical device, image-capturing device, projection device, measuring system, and measuring method

  • US 10,127,687 B2
  • Filed: 05/09/2017
  • Issued: 11/13/2018
  • Est. Priority Date: 11/13/2014
  • Status: Active Grant
First Claim
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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:

  • 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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