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3D deformation monitor with a distributed high-speed videogrammetry system based on shaking table experiment
Author(s): Benkang Wang; Peng Chen; Xiaohua Tong; Sa Gao; Lintao Hu
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Paper 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.

Paper Details

Date Published: 28 January 2019
PDF: 7 pages
Proc. SPIE 11051, 32nd International Congress on High-Speed Imaging and Photonics, 110510K (28 January 2019); doi: 10.1117/12.2524691
Show Author Affiliations
Benkang Wang, Tongji Univ. (China)
Peng Chen, Tongji Univ. (China)
Xiaohua Tong, Tongji Univ. (China)
Sa Gao, Tongji Univ. (China)
Lintao Hu, Tongji Univ. (China)


Published in SPIE Proceedings Vol. 11051:
32nd International Congress on High-Speed Imaging and Photonics
Michel Versluis; Eleanor Stride, Editor(s)

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