3D deformation monitor with a distributed high-speed videogrammetry system based on shaking table experiment

Benkang Wang; Peng Chen; Xiaohua Tong; Sa Gao; Lintao Hu

doi:10.1117/12.2524691

28 January 2019 3D deformation monitor with a distributed high-speed videogrammetry system based on shaking table experiment

Benkang Wang, Peng Chen, Xiaohua Tong, Sa Gao, Lintao Hu

Author Affiliations +

Proceedings Volume 11051, 32nd International Congress on High-Speed Imaging and Photonics; 110510K (2019) https://doi.org/10.1117/12.2524691
Event: International Conference on High-Speed Imaging and Photonics 2018, 2018, Enschede, The Netherlands

Abstract

In recent years, high-speed videogrammetry has been used to monitor the three-dimension behavior of large vibrating structures. Traditionally, this has been accomplished by transferring image sequences, captured by several cameras, to a central computer after each test has been conducted. Only then have the images been postprocessed and the required kinematic data extracted. This process is slow and inefficient because a large amount of data (image sequences) must be transferred to the host before the data analysis can begin. In order to address this problem, we have developed a novel system that adopts a distributed data processing strategy. The system which combining the processing power built into each of the individual cameras and the processing power of a central computer, uses a wired local area network. the communication between the nodes and the host is achieved using the TCP/IP protocol and a custom application layer. In this way, the processing power of the entire system is more fully utilized and the overall performance of the video processing system is improved. We describe how we have employed two cameras, operating simultaneously, to test the proposed concept. The experimental results from a series of tests showed that the average time required to perform the necessary image processing was reduced 58.7% by using the distributed processing system instead of a traditionally configured system.

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Benkang Wang, Peng Chen, Xiaohua Tong, Sa Gao, and Lintao Hu "3D deformation monitor with a distributed high-speed videogrammetry system based on shaking table experiment", Proc. SPIE 11051, 32nd International Congress on High-Speed Imaging and Photonics, 110510K (28 January 2019); https://doi.org/10.1117/12.2524691

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KEYWORDS

Computing systems

Distributed computing

Image processing

Cameras

High speed cameras

Image transmission

3D image processing

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