WCSE

The Application of High-speed Videogrammetric Technique in Underwater 3D Displacement Measurement Scenario

Abstract— With the rapid development of underwater engineering, acquiring accurate three-dimension (3D) measurement of underwater objects has become a very concerned topic. High-speed videogrammetry, which has advantages of non-contact measurement, flexibility and high precision, provides a feasible method to extract transient 3D displacement of objects. This paper presents the application of high-speed videogrammetric technique in underwater 3D displacement measurement scenario, which includes the following four main components: (1) An underwater high-speed videogrammetry network is established to capture and record the 3D displacement of underwater objects; (2) The underwater camera calibration is performed to obtain the interior orientation parameters and eliminate lens distortion; (3) Accurate target recognition and tracking algorithms are introduced to calculate the image coordinates of the target points in the high-speed image sequence; (4) 3D displacement is calculated based on 3D reconstruction of target points on objects via videogrammetric analysis algorithms. The underwater simulation experiment indicates that the proposed technique has a fairly good application performance in underwater measurement scenario with submillimeter accuracy

Index Terms— High-speed videogrammetry, Underwater measurement, Image sequence processing, 3D displacement measurement

Peng Chen
College of Surveying and Geo‐Informatics, Tongji University, CHINA
State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, CHINA
Jiajun Zhao
College of Surveying and Geo‐Informatics, Tongji University, CHINA
Sa Gao
College of Surveying and Geo‐Informatics, Tongji University, CHINA
Benkang Wang
College of Surveying and Geo‐Informatics, Tongji University, CHINA
Huangping Ma
College of Surveying and Geo‐Informatics, Tongji University, CHINA
Xiaohua Tong
College of Surveying and Geo‐Informatics, Tongji University, CHINA
State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, CHINA

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Cite: Peng Chen, Jiajun Zhao, Sa Gao, Benkang Wang, Huangping Ma, Xiaohua Tong, "The Application of High-speed Videogrammetric Technique in Underwater 3D Displacement Measurement Scenario ," 2021 The 11th International Workshop on Computer Science and Engineering (WCSE 2021), pp. 58-63, Shanghai, China, June 19-21, 2021.