Title:
CAMERA CALIBRATION METHOD, CAMERA CALIBRATION DEVICE, CAMERA CALIBRATION SYSTEM AND CAMERA CALIBRATION PROGRAM
Document Type and Number:
WIPO Patent Application WO/2019/193859
Kind Code:
A1
Abstract:
According to the present invention, in a moving image acquisition step, a moving image is acquired by moving a mobile camera so as to overlap the field of view of a monitoring camera. In a step for deriving calibration parameters for the mobile camera, a calibration parameter for the mobile camera is derived for each frame of the moving image. In a three-dimensional trajectory acquisition step, a three-dimensional movement trajectory of the mobile camera in a reference coordinate system is obtained by using the calibration parameter for the mobile camera. In a two-dimensional trajectory detection step, at least a part of the three-dimensional movement trajectory of the mobile camera is detected as a two-dimensional movement trajectory on an image captured by the monitoring camera. In a step for deriving calibration parameters for the monitoring camera, a calibration parameter for the monitoring camera is derived on the basis of the at least part of the three-dimensional movement trajectory and the two-dimensional movement trajectory.
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Inventors:
SEKII TAIKI (JP)
Application Number:
PCT/JP2019/006488
Publication Date:
October 10, 2019
Filing Date:
February 21, 2019
Export Citation:
Assignee:
KONICA MINOLTA INC (JP)
International Classes:
H04N5/232; G03B17/00; G06T7/292; H04N7/18; G03B15/00
Foreign References:
| JP4886560B2 | 2012-02-29 | |||
| JP2001074428A | 2001-03-23 |
Attorney, Agent or Firm:
SANO PATENT OFFICE (JP)
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