Author(s): Wang, MM (Wang, Minmin); Wang, XW (Wang, Xinwei); Zhang, Y (Zhang, Yue); Sun, L (Sun, Liang); Lei, PS (Lei, Pingshun); Yang, YQ (Yang, Yuqing); Chen, JN (Chen, Jianan); He, J (He, Jun); Zhou, Y (Zhou, Yan)

Source: OPTICS EXPRESS Volume: 29 Issue: 5 Pages: 7630-7640 DOI: 10.1364/OE.417131 Published: MAR 1 2021

Abstract: This paper is concerned with the mitigation of backscatter effects in a single gated image. A range-intensity-profile prior dehazing method is proposed to estimate scene depth and finely remove water backscatter at different depths for underwater range-gated imaging. It is based on the prior that the target intensity is distributed with range intensity profiles in gated images. The depth transmission and depth-noise map are then calculated from the scene depth. A high-quality image is restored by subtracting the depth-noise map and dividing the depth transmission. The simulation and experimental results show that the proposed method works well even if a portion of the estimated depth may be smaller than its real value, and the peak signal-to-noise ratio of dehazing images gets up to a doubled increase. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

Accession Number: WOS:000624968100107

PubMed ID: 33726260

ISSN: 1094-4087

Full Text: https://www.osapublishing.org/oe/fulltext.cfm?uri=oe-29-5-7630&id=448582