19 December 2013 Underwater pulsed laser range-gated imaging model and its effect on image degradation and restoration
Author Affiliations +
Optical Engineering, 53(6), 061608 (2013). doi:10.1117/1.OE.53.6.061608
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.
© 2014 Society of Photo-Optical Instrumentation Engineers (SPIE)
Youwei Huang, Fengmei Cao, Weiqi Jin, Su Qiu, "Underwater pulsed laser range-gated imaging model and its effect on image degradation and restoration," Optical Engineering 53(6), 061608 (19 December 2013). https://doi.org/10.1117/1.OE.53.6.061608

Pulsed laser operation


Point spread functions

Light scattering

Imaging systems

Image restoration

Submerged target modeling


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