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18 December 2023 Improvement of three-dimensional gated range-intensity correlation imaging by polarization in turbid water
Bo Song, Xinwei Wang, Liang Sun, Zhensong Xu, Pinshun Lei, Jianan Chen, Yan Zhou
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Proceedings Volume 12963, AOPC 2023: Optical Sensing, Imaging, and Display Technology and Applications; and Biomedical Optics; 1296312 (2023) https://doi.org/10.1117/12.3007647
Event: Applied Optics and Photonics China 2023 (AOPC2023), 2023, Beijing, China
Abstract
Underwater three-dimensional gated range-intensity correlation imaging (3D GRICI) can obtain two-dimensional images with large target-to-background contrast by suppressing backscatter and background noise outside volume of interest (VOI), and simultaneously reconstruct 3D images by the range-intensity correlation algorithm. However, it is still affected by the sub-backscatter noise from VOI in turbid water, resulting in short 3D detection distance and low contrast images. Therefore, in this paper the optical polarization is used for 3D GRICI. Due to the polarization-preserving property of water backscattering, the sub-backscatter noise can be removed from gate images by polarization. Experimental results show that when the water attenuation coefficient is less than or equal to the critical attenuation coefficient of c0, the polarization has no effect on improving detection distance and imaging quality of 3D GRICI; when the water attenuation coefficient is greater than c0, the polarization is helpful for improving performance of 3D GRICI. This research is conducive to optimize the applications of 3D GRICI in turbid water.
(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Bo Song, Xinwei Wang, Liang Sun, Zhensong Xu, Pinshun Lei, Jianan Chen, and Yan Zhou "Improvement of three-dimensional gated range-intensity correlation imaging by polarization in turbid water", Proc. SPIE 12963, AOPC 2023: Optical Sensing, Imaging, and Display Technology and Applications; and Biomedical Optics, 1296312 (18 December 2023); https://doi.org/10.1117/12.3007647
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KEYWORDS
3D acquisition
3D image processing
Target detection
Gated imaging
Polarization
Underwater imaging
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