The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 20, 2024
Filed:
Jun. 06, 2019
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Naoki Hayakawa, Ushiku, JP;
Shiho Izumi, Hitachinaka, JP;
HITACHI CONSTRUCTION MACHINERY CO., LTD., Tokyo, JP;
Abstract
A coordinate conversion system including a controller that converts geographic-coordinate-system coordinates of a certain point into site-coordinate-system coordinates includes: an image-capturing device that captures an image of a reference point; and a GNSS antenna that receives a navigation signal. The controller calculates geographic-coordinate-system coordinates of the image-capturing device on the basis of the navigation signal received at the GNSS antenna, and a distance between the image-capturing device and the GNSS antenna; calculates a distance and direction from the image-capturing device to the reference point by performing image processing on the image of the reference point captured by the image-capturing device; calculates the geographic-coordinate-system coordinates of the reference point on the basis of the calculated distance and direction from the image-capturing device to the reference point, and the calculated geographic-coordinate-system coordinates of the image-capturing device; and calibrates the coordinate conversion parameter on the basis of the calculated geographic-coordinate-system coordinates of the reference point, and the site-coordinate-system coordinates of the reference point.