31 October 2016 Underwater three-dimensional range-gated laser imaging based on triangular-range-intensity profile spatial-correlation method
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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.
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Xinwei Wang, Xiaoquan Liu, Pengdao Ren, Liang Sun, Songtao Fan, Pingshun Lei, 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); doi: 10.1117/12.2246449; https://doi.org/10.1117/12.2246449
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