Blar i Institutt for marin teknikk på tidsskrift "IEEE Journal of Oceanic Engineering"

Viser treff 1-6 av 6

    • Adaptive Sampling of Surface Fronts in the Arctic Using an Autonomous Underwater Vehicle 

      Fossum, Trygve Olav; Norgren, Petter; Fer, Ilker; Nilsen, Frank; Koenig, Zoe Charlotte; Ludvigsen, Martin (Peer reviewed; Journal article, 2021)
      Fronts between Arctic- and Atlantic-origin waters are characterized by strong lateral gradients in temperature and salinity. Ocean processes associated with fronts are complex with considerable space and time variability. ...

    • Ice condition assessment using onboard accelerometers and statistical change detection 

      Heyn, Hans-Martin; Blanke, Mogens; Skjetne, Roger (Journal article; Peer reviewed, 2019)
      The presence of sea ice is the predominant risk for ship operations in the Arctic, and monitoring of ice condition around a vessel is crucial during all times of operation. This paper presents a system for online onboard ...

    • A Methodology for Consistent Georegistration in Underwater Hyperspectral Imaging 

      Løvås, Håvard; Mogstad, Aksel Alstad; Sørensen, Asgeir Johan; Johnsen, Geir (Peer reviewed; Journal article, 2021)
      This article proposes a novel methodology for precise georegistration in underwater hyperspectral imaging (UHI) using a red–green–blue (RGB) camera to build a photogrammetry model that estimates the pose and a 3-D seabed ...

    • Modeling of Generic Offshore Vessel in Crane Operations With Focus on Strong Rigid Body Connections 

      Rokseth, Børge; Skjong, Stian; Pedersen, Eilif (Journal article; Peer reviewed, 2016)
      Both marine surface vehicles and underwater vehicles are often equipped with cranes, robotic manipulators, or similar equipment. Much attention is given to modeling of both the dynamics of marine vehicles and the dynamics ...

    • Semantic Segmentation in Underwater Ship Inspections: Benchmark and Dataset 

      Waszak, Maryna; Cardaillac, Alexandre; Elvesæter, Brian; Rødølen, Frode; Ludvigsen, Martin (Journal article; Peer reviewed, 2022)
      In this paper, we present the first large-scale dataset for underwater ship Lifecycle Inspection, Analysis and Condition Information (LIACI). It contains 1893 images with pixel annotations for 10 object categories: defects, ...

    • Underwater Position and Attitude Estimation Using Acoustic, Inertial, and Depth Measurements 

      Jørgensen, Erlend Kvinge; Fossen, Thor I.; Bryne, Torleiv Håland; Schjølberg, Ingrid (Peer reviewed; Journal article, 2019)
      This article considers the problem of constructing an observer for estimating position, velocity, attitude, underwater wave speed, rate sensor bias, and accelerometer bias that has both proven stability and close-to-optimal ...