Underwater three-dimensional range-gated laser imaging based on triangular-range-intensity profile spatial-correlation method

Xinwei Wang; Xiaoquan Liu; Pengdao Ren; Liang Sun; Songtao Fan; Pingshun Lei; Yan Zhou

doi:10.1117/12.2246449

31 October 2016 Underwater three-dimensional range-gated laser imaging based on triangular-range-intensity profile spatial-correlation method

Xinwei Wang, Xiaoquan Liu, Pengdao Ren, Liang Sun, Songtao Fan, Pingshun Lei, Yan Zhou

Author Affiliations +

Proceedings Volume 10020, Optoelectronic Imaging and Multimedia Technology IV; 1002006 (2016) https://doi.org/10.1117/12.2246449
Event: SPIE/COS Photonics Asia, 2016, Beijing, China

Abstract

Underwater 3D range-gated imaging can extend the detection range over underwater stereo cameras, and also has great potentials in real-time high-resolution imaging than 3D laser scanning. In this paper, a triangular-range-intensity profile spatial correlation method is used for underwater 3D range-gated imaging. Different from the traditional trapezoidal method, in our method gate images have triangular range-intensity profiles. Furthermore, inter-frame correlation is used for video-rate 3D imaging. In addition, multi-pulse time delay integration is introduced to shape range-intensify profiles and realize flexible 3D SRGI. Finally, in experiments, 3D images of fish net, seaweed and balls are obtained with mm-scaled spatial and range resolution.

Citation Download Citation

Xinwei Wang, Xiaoquan Liu, Pengdao Ren, Liang Sun, Songtao Fan, Pingshun Lei, and Yan Zhou "Underwater three-dimensional range-gated laser imaging based on triangular-range-intensity profile spatial-correlation method", Proc. SPIE 10020, Optoelectronic Imaging and Multimedia Technology IV, 1002006 (31 October 2016); https://doi.org/10.1117/12.2246449

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