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Vol. 157, Issue 10, October 2013, pp. 234-239




A Large-Scale Particle Image Velocimetry System Based on Dual-camera Field of View Stitching
1 Fengzhou Wang, 2 Baohua Xu, 3 Mengxi Xu, 3 Jianqiang Shi, 1 Lang Jia, * 1 Chenming Li

1 College of Computer and Information Engineering, Hohai University, Nanjing 211100, P. R. China

2 Yangtze River Estuary Survey Bureau of Hydrology and Water Resource CWRC, Ministry of Water Resources, Shanghai 200136, P. R. China

3 School of Computer Engineering, Nanjing Institute of Technology, Nanjing 211167, P. R. China

* Tel.: +86 25 58099120, fax: +86 25 58099120

* E-mail: banjamin2008@163.com, hhice@126.com


Received: 11 July 2013   /Accepted: 25 September 2013   /Published: 31 October 2013

Digital Sensors and Sensor Sysstems


Abstract: Large-Scale Particle Image Velocimetry (LSPIV) is an effective method for the measurement of the river surface flow velocity. For the wide cross-section river, in the near-field area of river surface image there are small and clear targets. But the flow tracers are almost invisible in the far-field area because of the resolution limit of one single video camera, which makes it difficult to complete the velocimetry task. So a dual-camera based LSPIV system has been developed for monitoring the wide cross-section river. This system is based on two digital Internet Protocol (IP) video cameras either of which captures more than half of the river surface with high resolution. And then the developed system stitches the two images into one covering the entire wide cross-section rivers. In the far field of river, the accuracy of the vector increases from 20.4 % to 80.4 %.


Keywords: River flow velocity measurement, Large scale particle image velocimetry, Dual-camera, Image stitching.


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