METHOD OF HIGH-PRECISION 3D RECONSTRUCTION OF EXISTING RAILWAY TRACK LINES BASED ON UAV MULTI-VIEW IMAGES

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-d...

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Main Authors GE, Yuhui, GAO, Shuai, NIE, Huxiao, WANG, Guangshuai, ZHAO, Hai, ZHANG, Yingjie, ZHANG, Wenteng, ZHAO, Luoming, WANG, Kai, DENG, Jiwei, ZHANG, Guanjun, YUE, Liang, GAO, Wenfeng
Format Patent
LanguageEnglish
Published 13.04.2023
Subjects
CALCULATING
COMPUTING
COUNTING
GYROSCOPIC INSTRUMENTS
IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
MEASURING
MEASURING DISTANCES, LEVELS OR BEARINGS
NAVIGATION
PHOTOGRAMMETRY OR VIDEOGRAMMETRY
PHYSICS
SURVEYING
TESTING
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Summary: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.
Bibliography:Application Number: US202218063273