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Optical Engineering

Model-based restoration and reconstruction for underwater range-gated imaging
Author(s): Yuzhang Chen; Wei Li; Min Xia; Kecheng Yang
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Paper Abstract

In order to improve underwater range-gated imagery quality, image restoration and super-resolution reconstruction techniques based on maximum a posteriori framework are combined with the point spread function (PSF) of the system. A model based on beam propagation considering time-dependent backscatter is established including the extreme attenuation properties of water and the diffraction limit of sensor for obtaining the PSF. The proposed method is applied for an underwater range-gated imaging system. Performance of the approach is compared with the traditional restoration and reconstruction algorithms. Objective image quality metrics are used to quantify the effectiveness of the restoration and reconstruction. Experimental results showed that the proposed method can effectively improve the resolution and quality of underwater range-gated imaging.

Paper Details

Date Published: 1 November 2011
PDF: 10 pages
Opt. Eng. 50(11) 113203 doi: 10.1117/1.3651810
Published in: Optical Engineering Volume 50, Issue 11
Show Author Affiliations
Yuzhang Chen, Wuhan National Lab. for Optoelectronics (China)
Wei Li, Wuhan National Lab. for Optoelectronics (China)
Min Xia, Wuhan National Lab. for Optoelectronics (China)
Kecheng Yang, Wuhan National Lab. for Optoelectronics (China)

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