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Optical Engineering

Underwater pulsed laser range-gated imaging model and its effect on image degradation and restoration
Author(s): Youwei Huang; Fengmei Cao; Weiqi Jin; Su Qiu
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Paper Abstract

The imaging of underwater objects illuminated by artificial light has been of long-standing interest to investigators working in oceanographic environments. Pulsed lasers together with range-gated technology have been widely used for underwater optical imaging applications. In order to describe the formation of underwater range-gated images, a pulsed laser underwater imaging model based on pulse spatial and temporal broadening is proposed. Experiments based on a self-assembled laser range-gated imaging system were implemented in our laboratory. Results show good agreements between experiments and simulations. Both results also confirm higher image contrast toward the tail region of the target-reflected light. Furthermore, experiments on underwater image blur and restoration are also implemented and show good image recovery results. The modulation transfer function-based restoration mechanism also implies a way to eliminate the blur effect caused by light forward scattering.

Paper Details

Date Published: 19 December 2013
PDF: 6 pages
Opt. Eng. 53(6) 061608 doi: 10.1117/1.OE.53.6.061608
Published in: Optical Engineering Volume 53, Issue 6
Show Author Affiliations
Youwei Huang, Beijing Institute of Technology (China)
Institute of Microelectronics (China)
Fengmei Cao, Beijing Institute of Technology (China)
Weiqi Jin, Beijing Institute of Technology (China)
Su Qiu, Beijing Institute of Technology (China)

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