CALIBRATION DEVICE, CALIBRATION METHOD, OPTICAL DEVICE, IMAGING DEVICE, PROJECTION DEVICE, MEASUREMENT SYSTEM, AND MEASUREMENT METHOD

Title:

CALIBRATION DEVICE, CALIBRATION METHOD, OPTICAL DEVICE, IMAGING DEVICE, PROJECTION DEVICE, MEASUREMENT SYSTEM, AND MEASUREMENT METHOD

Document Type and Number:

WIPO Patent Application WO/2016/076400

Kind Code:

A1

Abstract:

This calibration device 1 is intended to accurately calculate a camera parameter within a short time. The calibration device 1 is for use in an optical device 2 equipped with a two-dimensional image conversion element having a plurality of pixels, and an optical system for forming an imaging relationship between the image conversion element and a three-dimensional world coordinate space, and is provided with: a calibration data acquisition unit 8 that acquires calibration data showing correlations between two-dimensional image coordinates of the image conversion element and three-dimensional world coordinates of the world coordinate space; and a parameter calculation unit 7 that applies, to the calibration data obtained by the calibration data acquisition unit 8, a camera model in which two coordinate values among the three-dimensional world coordinates are represented as a function of one other world coordinate and two coordinate values of the two-dimensional image coordinates, and calculates a parameter of the camera model.

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Inventors:

MATSUZAWA TOSHIAKI (JP)

Application Number:

PCT/JP2015/081886

Publication Date:

May 19, 2016

Filing Date:

November 12, 2015

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Assignee:

OLYMPUS CORP (JP)

International Classes:

G01B11/00

Foreign References:

JP2002202122A	2002-07-19
US20140085409A1	2014-03-27

Other References:

WENG ET AL.: "Camera Calibration with Distortion Models and Accuracy Evaluation", IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE, vol. 14, no. 10, October 1992 (1992-10-01), pages 965 - 980, XP000328810
See also references of EP 3220099A4

Attorney, Agent or Firm:

UEDA, Kunio et al. (JP)
Ueda Kunio (JP)

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