Title:
LASER CALIBRATION DEVICE, CALIBRATION METHOD THEREFOR, AND IMAGE INPUT DEVICE INCLUDING LASER CALIBRATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/230171
Kind Code:
A1
Abstract:
In the present invention, a laser calibration pattern display means (102) outputs laser projection position identification pattern information for displaying a laser projection position identification pattern (20) on a display screen of a display (4), the laser projection position identification pattern being from a laser measurement device (1). A laser projection position identification means (103): receives reflection intensity value information including a laser light reflection intensity value output from the laser measurement device (1) that has received laser light reflected from the laser projection position identification pattern (20) emitted from the laser measurement device (1) and displayed on the display screen (41) of the display (4); and derives a laser projection position on the display screen (41) of the display (4) on the basis of the reflection intensity value in the reflection intensity value information. A camera calibration pattern display means (101) outputs camera calibration pattern information for displaying a camera calibration pattern (10) on the display screen (41) of the display (4). On the basis of the laser projection position information indicating the laser projection position derived by the laser projection position identification means (103), a position relationship calculation means (104) calculates the position relationship of a camera (2) and the laser measurement device (1) using captured camera calibration pattern information obtained by the camera (2) capturing the camera calibration pattern (10) displayed on the display screen (41) of the display (4), and outputs the position relationship information of the laser measurement device (1) with respect to the camera (2).
Inventors:
SUZUKI RYOGA (JP)
MAEHARA HIDEAKI (JP)
HINO MOMOYO (JP)
TAIRA KENJI (JP)
KATO SUMIO (JP)
MAEHARA HIDEAKI (JP)
HINO MOMOYO (JP)
TAIRA KENJI (JP)
KATO SUMIO (JP)
Application Number:
PCT/JP2019/013295
Publication Date:
December 05, 2019
Filing Date:
March 27, 2019
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
G01S7/497; G01B11/00
Foreign References:
| JP2007171092A | 2007-07-05 | |||
| JP2007064723A | 2007-03-15 | |||
| JP2009264898A | 2009-11-12 | |||
| JP2005077385A | 2005-03-24 | |||
| JP2013015413A | 2013-01-24 | |||
| JP2017026551A | 2017-02-02 | |||
| JP2007064723A | 2007-03-15 |
Other References:
TORN HIRAOKA: "Calibration Method of Laser Scanner by Target Measurement", PHOTOGRAMMETRY AND REMOTE SENSING, vol. 47, no. 4, 2008, pages 53 - 58
See also references of EP 3779504A4
See also references of EP 3779504A4
Attorney, Agent or Firm:
TAZAWA, Hideaki et al. (JP)
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