Multi-frame underwater image restoration

A. V. Kanaev, W. Hou, S. Woods

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

    6 Scopus citations

    Abstract

    Ability to image underwater is highly desired for scientific and military applications, including optical communications, submarine awareness, diver visibility, and mine detection. Underwater imaging is severely impaired by scattering and optical turbulence associated with refraction index fluctuations. This work introduces novel approach to restoration of degraded underwater imagery based on multi-frame correction technique developed for atmospheric distortions. The method represents synthesis of "lucky-region" fusion and optical flow based image warping. Developed multi-frame image restoration algorithm is applied to sets of images collected in laboratory under controlled conditions as well as field test data. Reliance of image restoration on sophistication of the optical flow algorithm is shown. Variable degrees of image degradation mitigation which manifest themselves as high spatial frequency content recovery are demonstrated depending on imaging conditions and ratio of typical image spatial frequency scale to typical degradation spatial frequency scale.

    Original languageEnglish
    Title of host publicationElectro-Optical and Infrared Systems
    Subtitle of host publicationTechnology and Applications VIII
    DOIs
    StatePublished - 2011
    EventElectro-Optical and Infrared Systems: Technology and Applications VIII - Prague, Czech Republic
    Duration: Sep 21 2011Sep 22 2011

    Publication series

    NameProceedings of SPIE - The International Society for Optical Engineering
    Volume8185
    ISSN (Print)0277-786X

    Conference

    ConferenceElectro-Optical and Infrared Systems: Technology and Applications VIII
    Country/TerritoryCzech Republic
    CityPrague
    Period09/21/1109/22/11

    Keywords

    • Imaging through turbulence
    • Multi-frame restoration
    • Underwater imaging

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