Unmanned vehicles are employed more and more frequently for a range of scientific and commercial undersea applications. However, the critical dependency on a tether link, mainly for the transmission of live images to the surface for command and control, is a significant technological obstacle limiting vehicle maneuverability. The elimination of the tether requires the capability to compress a massive amount of live video data to meet the bandwidth limitations of acoustic telemetry. This paper addresses motion-compensated compression of underwater video imagery and the extraction of the sought-after transformations by the application of the brightness constancy assumption and a generalized dynamic image model for the analysis of time-varying imagery. Two approaches, suitable for automatic vision-based navigation or operator-assisted missions of unmanned submersible vehicles, are considered. In the former case, the 3D motion and position information extracted from the raw data by the vision-based navigation system is used directly to perform the compression. In the latter case, the compression is achieved using the motion and radiometric information extracted from the live and reconstructed images at the surface station. To evaluate the performance of proposed methods, results from experiments with synthetic and real data are presented and compared to compression methods that are based on the brightness constancy model.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Motion-based compression of underwater video imagery for the operations of unmanned submersible vehicles


    Beteiligte:
    Negahdaripour, S. (Autor:in) / Khamene, A. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2000


    Format / Umfang :

    22 Seiten, 32 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




    Motion-Based Compression of Underwater Video Imagery for the Operations of Unmanned Submersible Vehicles

    Negahdaripour, S. / Khamene, A. | British Library Online Contents | 2000


    UNMANNED SUBMERSIBLE FOR MONITORING UNDERWATER FACILITY

    LEE JI YEOL / KIM HYO NAM / SHIN JAE MIN et al. | Europäisches Patentamt | 2019

    Freier Zugriff

    Unmanned submersible special for underwater reconnaissance

    CAI KAILUN | Europäisches Patentamt | 2021

    Freier Zugriff

    Research on Autonomous Docking Control for Underwater Recovery of Unmanned Submersible Vehicles

    Ni, Tian / Zhang, Lindan / Sima, Can et al. | Springer Verlag | 2024


    Emergency load rejection mechanism for underwater unmanned submersible

    GUAN FENGXU / HU RUI / ZHANG WEI et al. | Europäisches Patentamt | 2023

    Freier Zugriff