Title:
CAMERA CALIBRATION DEVICE, CAMERA CALIBRATION METHOD, AND NON-TRANSITORY COMPUTER-READABLE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2021/079456
Kind Code:
A1
Abstract:
In this camera calibration device (10), a vanishing point calculation unit (12) calculates a horizontal-direction "first vanishing point" on the basis of a first coordinate pair and a second coordinate pair acquired by an acquisition unit (11), and also calculates a vertical-direction "second vanishing point" on the basis of a third coordinate pair and a fourth coordinate pair acquired by the acquisition unit (11). A camera parameter calculation unit (13) calculates a camera parameter for a camera on the basis of the first and second vanishing points calculated by the vanishing point calculation unit (12). The first coordinate pair and the second coordinate pair are respectively associated with a person's body parts distributed in the horizontal direction within a world coordinate space. The third coordinate pair and the fourth coordinate pair are respectively associated with a person's body parts distributed in the vertical direction within the world coordinate space.
Inventors:
NAKANO GAKU (JP)
Application Number:
PCT/JP2019/041681
Publication Date:
April 29, 2021
Filing Date:
October 24, 2019
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
H04N5/247; G01B11/00; G01B11/26; G03B15/00; H04N5/232
Foreign References:
| JP2010025569A | 2010-02-04 | |||
| JP2007233908A | 2007-09-13 | |||
| US20130322767A1 | 2013-12-05 |
Attorney, Agent or Firm:
IEIRI Takeshi (JP)
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