This paper presents a photogrammetric model for digital underwater video imagery, which has been mostly applied to qualitative analysis in the marine environment. With this model, quantitative analysis of underwater images is possible, e.g., to locate positions, calculate sizes, and measure shapes of objects from image features. The underwater photogrammetric model is based on a three-dimensional optical ray tracing technique which rigorously models imaging systems with multilens configurations and multiple refractions. The calibration procedure with two independent phases has been proven to be efficient in simplifying the computation and improving the calibration accuracy. With the current imaging system configuration and photogrammetric model, an accuracy of 0.8 cm in lateral directions and 1.2 cm along the depth direction for objects located about 2-3 m from the camera system in the object space is attainable. A PC-based digital underwater photogrammetric prototype system has been developed to implement the underwater photogrammetric model.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Quantitative photogrammetric analysis of digital underwater video imagery


    Weitere Titelangaben:

    Quantitative fotogrammetrische Bildanalyse digitaler Unterwasser-Videoaufnahmen. Identifikation von Unterwasserobjekten


    Beteiligte:
    Li, Rongxin (Autor:in) / Li, Haihao (Autor:in) / Zou, Weihong (Autor:in) / Smith, R.G. (Autor:in) / Curran, T.A. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    1997


    Format / Umfang :

    12 Seiten, 30 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




    Fusing ROV-based photogrammetric underwater imagery with multibeam soundings for reconstructing wrecks in turbid waters

    Rofallski, Robin / Westfeld, Patrick / Nistad, Jean-Guy et al. | HENRY – Bundesanstalt für Wasserbau (BAW) | 2020

    Freier Zugriff

    Robotic photogrammetric underwater inspection of hydropower plants

    Ammann, Manuela | HENRY – Bundesanstalt für Wasserbau (BAW) | 2023

    Freier Zugriff

    Digital mosaicking of underwater imagery

    Howland, J.C. / Singh, H. / Marra, M. et al. | Tema Archiv | 1999


    Photogrammetric system and photogrammetric method

    NISHITA NOBUYUKI | Europäisches Patentamt | 2020

    Freier Zugriff

    Digital Image Enhancement rising Photogrammetric Techniques

    Fryer, J. / McIntosh, K. / Trans Tasman Surveyors et al. | British Library Conference Proceedings | 1997