A comprehensive underwater laser imaging model based on temporal and spatial broadening

You Wei Huang*, Wei Qi Jin, Kun Ding, Hai Lan Li, Feng Mei Cao, Xia Wang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

The imaging of underwater objects which have been illuminated by natural or artificial light has been of long-standing interest to investigators working in oceanographic environments. Analysis of the propagation of imaging light through water is complicated by extreme attenuating and scattering properties of water, especially multiple scattering. A comprehensive computer model to simulate the formation of underwater images has been presented in this article. The model incorporates the temporal and spatial broadening properties of the propagation of light in water. A degraded image is approximated as a convolution of an initial image and point spread functions (PSFs). The spatial PSF plays a significant role in describing the spatial propagation of light and image blurring due to forward scattering. The temporal PSF can describe the pulse broadening effect, which is of great significance to evaluate the performance of range-gated technology. Computed and measured images compare favorably. It is concluded that the use of spatial and temporal broadening models are convenient and viable techniques for analytic computation of underwater images. 2009 SPIE.

Original languageEnglish
Title of host publicationInternational Symposium on Photoelectronic Detection and Imaging 2009
Subtitle of host publicationLaser Sensing and Imaging
DOIs
Publication statusPublished - 2009
EventInternational Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging - Beijing, China
Duration: 17 Jun 200919 Jun 2009

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7382
ISSN (Print)0277-786X

Conference

ConferenceInternational Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging
Country/TerritoryChina
CityBeijing
Period17/06/0919/06/09

Keywords

  • Range-gated
  • Spatial PSF
  • Temporal broadening
  • Underwater laser imaging

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