Browsing NTNU Open by Author "Ludvigsen, Martin"
Now showing items 1-20 of 110
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3D modelling of underwater archaeological artefacts
Gawlik, Natalia (Master thesis, 2014)Underwater photogrammetry is a good alternative to traditional archaeological excavations, which are often less accurate and very destructive to underwater artefacts Furthermore the photogrammetric principles applied with ... -
A GQPSO Based Optimal Path Planner for Autonomous Underwater Vehicle with Waypoint Guidance System
Liu, Hantong (Master thesis, 2022)Autonomous underwater vehicle (AUV) has become a popular and important way to do the exploration and exploitation of ocean areas where it's not possible for human to visit such as areas in higher depth. Most of the time, ... -
A new method for underwater archaeological surveying using sensors and unmanned platforms
Ødegård, Øyvind; Sørensen, Asgeir Johan; Hansen, Roy Edgar; Ludvigsen, Martin (Journal article; Peer reviewed, 2016)As most of the world’s oceans are inaccessible to diving archaeologists, we must rely on advanced underwater technology and marine robotics to explore, map and investigate ship wrecks in these areas. New sensors and unmanned ... -
Adaptive Mission Planning for Water Column Investigations
Abdelgayed, Ahmed (Master thesis, 2024)This thesis investigates the development and implementation of different parts of an autonomous sampling framework for marine robots to study the water column, with a focus on zooplankton detection, mapping, and sampling. ... -
Adaptive Sampling for Marine Robotics
Fossum, Trygve Olav (Doctoral theses at NTNU;2019:196, Doctoral thesis, 2019)Maintaining a healthy ocean is of the utmost importance. Having only a limited set of resources available to study this vast domain requires research and science to focus on more efficient data collection. Determining when ... -
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. ... -
Adaptive sampling with marine robots: Applied adaptive and collaborative sampling for autonomous underwater vehicles
Mo-Bjørkelund, Tore (Doctoral theses at NTNU;2024:506, Doctoral thesis, 2024) -
Adaptive Tracking of the Barents Sea Polar Front Using an Autonomous Underwater Vehicle
Mo-Bjørkelund, Tore; Kolås, Eivind Hugaas; Fer, Ilker; Ludvigsen, Martin (Peer reviewed; Journal article, 2024)Exchanges and interactions between water masses are typically concentrated across ocean fronts, requiring targeted sampling. As fronts are dynamic in their spatiotemporal extent, they can be hard to map with limited sampling ... -
Advancing Ocean Observation with an AI-driven Mobile Robotic Explorer
Saad, Aya; Stahl, Annette; Våge, Andreas; Davies, Emlyn John; Nordam, Tor; Aberle-Malzahn, Nicole; Ludvigsen, Martin; Johnsen, Geir; Sousa, João; Rajan, Kanna (Journal article; Peer reviewed, 2020)Rapid assessment and enhanced knowledge of plankton communities and their structure in the productive upper water column is of crucial importance to understand the impact of the changing climate on upper ocean processes. ... -
Altitude Control System for Acquiring Optimal Underwater Hyperspectral Imagery Data using an Unmanned Underwater Vehicle
Janjua, Christopher Anthony (Master thesis, 2023)Utviklingen av autonome undervannsrobot-systemer for effektiv havkartlegging utgjør en betydelig utfordring. Disse systemene må være i stand til å navigere og manøvrere i et miljø som er mørkt, dystert, og ofte fiendtlig, ... -
An ROV toolbox for optical and acoustical seabed investigations
Ludvigsen, Martin (Doktoravhandlinger ved NTNU, 1503-8181; 2010:74, Doctoral thesis, 2010)This thesis describes a set of optical and acoustical methods for documenting a research site using underwater vehicles. The need for observations in cold-water coral research has formed the design problem in this work. A ... -
Automated monitoring of the early life stages of fish
Williamson, David R. (Doctoral theses at NTNU;2024:375, Doctoral thesis, 2024)FISH are one of the most abundant animals on the planet, and hugely important to both aquatic and terrestrial ecosystems. They are also a vital food source to many human communities, and the focus of a vast industry of ... -
Automated Video Segmentation in Underwater Ship Inspections Exploiting Deep Learning, Computer Vision, and Image Enhancement
Giske, Lars (Master thesis, 2022)Inspeksjon av skipsskrog er en avgjørende del av å administrere og opprettholde standarden på aldrende skip. Undervannsinspeksjoner av skip, utført av dykkere eller fjernstyrte undervannsdroner (ROVs), kan være et godt ... -
Autonomous Behavior for Homingand Docking of Underwater Vehicles
Moltu, Signe Birch (Master thesis, 2020)Denne masteroppgaven foreslår en A*-algoritme for homing av undervannsfarkoster for å minimere driftskostnadene og begrense menneskelige feil, samtidig som det sikres en trygg og kort vei for farkosten. Homing er navnet ... -
Autonomous Exploration for Marine Minerals
Sture, Øystein (Doctoral theses at NTNU;2022:393, Doctoral thesis, 2022)The availability of minerals is essential for the production of goods and the development of sustainable technologies. The mineral demand is expected to increase in the coming years as a result of population growth and ... -
Autonomous Homing and Docking of AUV REMUS 100 - Homing and Docking Guidance Algorithm and Relative Localization
Ruud, Fredrik Jonsson (Master thesis, 2016)This master's thesis presents an algorithm for homing and docking of NTNU's AUV, REMUS 100. Such an algorithm would ease the retrieval of the AUV and facilitate for future underwater docking missions. The homing phase of ... -
Autonomous Optical Survey Based on Unsupervised Segmentation of Acoustic Backscatter
Sture, Øystein; Fossum, Trygve Olav; Ludvigsen, Martin; Syre Wiig, Martin (Journal article, 2018)The application of acoustics to study the seabed have for decades provided industry and science with valuable information, and is still excels in terms of spatial coverage and detail. An acoustic response from the seabed ... -
Autonomous Optical Survey Based on Unsupervised Segmentation of Acoustic Backscatter
Sture, Øystein; Fossum, Trygve Olav; Ludvigsen, Martin; Syre Wiig, Martin (Chapter, 2018)The application of acoustics to study the seabed have for decades provided industry and science with valuable information, and is still excels in terms of spatial coverage and detail. An acoustic response from the seabed ... -
Autonomous Robotic Intervention using ROV
Rist-Christensen, Ida (Master thesis, 2016)This thesis proposes a semi-autonomous agent architecture for a Remotely Operated Vehicle (ROV). The purpose of this architecture is to apply control strategies from Autonomously Operated Vehicles (AUVs) onto ROVs, in order ... -
Autonomous underwater vehicles in Arctic marine operations: Arctic marine research and ice monitoring
Norgren, Petter (Doctoral theses at NTNU;2018:255, Doctoral thesis, 2018)This thesis considers autonomous underwater vehicles (AUVs) in Arctic marine operations. It focuses on their use as a sensor platform in ice monitoring operations and the use of AUVs for Arctic marine research. Arctic AUV ...