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:
Jul. 01, 2025
Filed:
Dec. 08, 2022
China Railway Design Corporation, Tianjin, CN;
Guangshuai Wang, Tianjin, CN;
Jiwei Deng, Tianjin, CN;
Wenfeng Gao, Tianjin, CN;
Hai Zhao, Tianjin, CN;
Guanjun Zhang, Tianjin, CN;
Kai Wang, Tianjin, CN;
Yingjie Zhang, Tianjin, CN;
Huxiao Nie, Tianjin, CN;
Wenteng Zhang, Tianjin, CN;
Liang Yue, Tianjin, CN;
Yuhui Ge, Tianjin, CN;
Shuai Gao, Tianjin, CN;
Luoming Zhao, Tianjin, CN;
CHINA RAILWAY DESIGN CORPORATION, Tianjin, CN;
Abstract
Disclosed is a method of high-precision 3D reconstruction of existing railway track lines based on UAV multi-view images, including: acquiring initial data, acquiring a UAV image rail top centerline, calculating a rail top centerline based on a nonlinear least squares method, and calculating three-dimensional coordinates of the rail centerline. Based on the multi-view geometry principle in computer vision and photogrammetry, object space coordinates of the line can be directly calculated by using image information, which does not require outdoor workers to work online and can effectively improve the safety of railway operation line surveying and mapping. Therefore, this method has important engineering application value and application prospect.