Title:
DEVICE, METHOD, AND PROGRAM WHICH CONVERT COORDINATES OF 3D POINT CLOUD
Document Type and Number:
WIPO Patent Application WO/2022/059051
Kind Code:
A1
Abstract:
The purpose of the present disclosure is to convert point cloud data acquired by a fixed three-dimensional laser scanner into absolute coordinates and to enable centralized management with point cloud data acquired by using another means such as an MMS. The present disclosure is a 3D point cloud coordinate conversion device comprising: an origin coordinate conversion processing unit which acquires first point cloud data in which an object to be measured present in a three-dimensional space is represented by a point cloud with relative coordinates centered on a predetermined origin, and absolute coordinates of the origin, and converts the coordinates of the point cloud into relative coordinates with the absolute coordinates as the origin; an object-to-be-measured reference coordinate calculation unit which specifies, by using the point cloud, the reference point of the object to be measured at the relative coordinates having the origin of the absolute coordinates; and a rotation coordinate conversion calculation unit which obtains the absolute coordinates of the reference point of the object to be measured by using the absolute coordinates of the origin, calculates the angle of rotation from the reference point of the object to be measured to the absolute coordinates of the reference point of the object to be measured in the relative coordinates having the origin of the absolute coordinates centered on the origin of the absolute coordinates, and by using the calculated angle of rotation, converts the coordinates of the point cloud of relative coordinates having the origin of absolute coordinates into absolute coordinates.
Inventors:
INOUE MASAAKI (JP)
OSHIDA HIROYUKI (JP)
OSHIDA HIROYUKI (JP)
Application Number:
PCT/JP2020/034819
Publication Date:
March 24, 2022
Filing Date:
September 15, 2020
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
G01C15/00; G01S17/89; G06T1/00
Foreign References:
| JP2020052046A | 2020-04-02 | |||
| JP2007004578A | 2007-01-11 | |||
| JP2020035448A | 2020-03-05 | |||
| JP2019101000A | 2019-06-24 | |||
| JP2020020747A | 2020-02-06 |
Attorney, Agent or Firm:
OKADA, Kenji et al. (JP)
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