Browsing NTNU Open by Author "Leira, Frederik Stendahl"
Now showing items 1-14 of 14
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A UAV Ice Tracking Framework for Autonomous Sea Ice Management
Leira, Frederik Stendahl; Johansen, Tor Arne; Fossen, Thor I. (Chapter; Peer reviewed, 2017)This paper describes an unmanned aerial vehicle (UAV) ice tracking framework for use in sea ice management applications. The framework is intended to be used in an ice management scenario where the UAV should detect and ... -
Automatic detection, classification and tracking of objects in the ocean surface from UAVs using a thermal camera
Leira, Frederik Stendahl; Johansen, Tor Arne; Fossen, Thor I. (Journal article; Peer reviewed, 2015)The use of unmanned aerial vehicles (UAVs) that can operate autonomously in dynamic and dangerous operational environments are becoming increasingly common. In such operations, object detection, classification and tracking ... -
Autonomous ballistic airdrop of objects from a small fixed-wing unmanned aerial vehicle
Mathisen, Siri Gulaker; Leira, Frederik Stendahl; Helgesen, Håkon Hagen; Gryte, Kristoffer; Johansen, Tor Arne (Peer reviewed; Journal article, 2020)Autonomous airdrop is a useful basic operation for a fixed-wing unmanned aerial system. Being able to deliver an object to a known target position extends operational range without risking human lives, but is still limited ... -
Autonomous search and tracking of objects using model predictive control of unmanned aerial vehicle and gimbal: Hardware-in-the-loop simulation of payload and avionics
Skjong, Espen; Nundal, Stian Aa.; Leira, Frederik Stendahl; Johansen, Tor Arne (Chapter, 2015)This paper describes the design of model predictive control (MPC) for an unmanned aerial vehicle (UAV) used to track objects of interest identified by a real-time camera vision (CV) module in a search and track (SAT) ... -
Colored-Noise Tracking of Floating Objects using UAVs with Thermal Cameras
Helgesen, Håkon Hagen; Leira, Frederik Stendahl; Johansen, Tor Arne (Chapter, 2019)Tracking of floating objects using a fixed-wing UAV equipped with a thermal camera requires precise knowledge about the position and attitude of the UAV. Errors in the navigation estimates reduce the accuracy of the tracking ... -
Coordinating UAVs and AUVs for Oceanographic Field Experiments:Challenges and Lessons Learned
Faria, Margarida; Pinto, José; Py, Frédéric; Fortuna, João; Dias, Hugo; Martins, Ricardo; Leira, Frederik Stendahl; Johansen, Tor Arne; Sousa, João; Rajan, Kanna (Journal article, 2014)Obtaining synoptic observations of dynamic ocean phenomena such as fronts, eddies, oxygen minimum zones and blooms has been challenging primarily due to the large spatial scales involved. Traditional methods of observation ... -
Experimental Monitoring of Sea Ice Using Unmanned Aerial Systems
Flåten, Andreas L. (Master thesis, 2015)The exploration of arctic seas for offshore oil- and gas resources has received increasing interest the past few years. Despite the recent dramatic fall in oil prices, estimates indicate that as much as 22% of the worlds ... -
Infrared Object Detection & Tracking in UAVs
Leira, Frederik Stendahl (Master thesis, 2013)The present thesis describes the design and implementation of a small, light weight and power efficient payload system for the use in unmanned aerial vehicles (UAVs). The primary application of the payload system is that ... -
Object Detection and Tracking With UAVs: A Framework for UAV Object Detection and Tracking Using a Thermal Imaging Camera
Leira, Frederik Stendahl (Doctoral theses at NTNU;2017:1, Doctoral thesis, 2017)In recent years there has been a drastic increase in the commercial availability of small UAVs for civil and commercial applications. These applications includes, but are not limited to, inspections of structures, search ... -
Object Detection, Recognition and Tracking from UAVs using a Thermal Camera
Leira, Frederik Stendahl; Helgesen, Håkon Hagen; Johansen, Tor Arne; Fossen, Thor I. (Peer reviewed; Journal article, 2020)In this paper a multiple object detection, recognition, and tracking system for unmanned aerial vehicles (UAVs) has been studied. The system can be implemented on any UAVs platform, with the main requirement being that the ... -
Real-time Georeferencing of Thermal Images using Small Fixed-Wing UAVs in Maritime Environments
Helgesen, Håkon Hagen; Leira, Frederik Stendahl; Bryne, Torleiv Håland; Albrektsen, Sigurd Mørkved; Johansen, Tor Arne (Journal article; Peer reviewed, 2019)This article considers real-time georeferencing using a fixed-wing unmanned aerial vehicle (UAV) with a thermal camera. A flexible system for direct georeferencing is proposed without the need for ground reference points. ... -
System Integration of Unmanned Aerial Vehicle with Thermal Camera
Roy, Elizabeth (Master thesis, 2016)This thesis describes the implementation of two systems, both relevant to the FLIR Tau 2 thermal camera, for use in a UAV payload with the aim of increasing the efficiency and cost-effectiveness of the existing system. The ... -
Tracking of Ocean Surface Objects from Unmanned Aerial Vehicles with a Pan/Tilt Unit using a Thermal Camera
Helgesen, Håkon Hagen; Leira, Frederik Stendahl; Fossen, Thor I.; Johansen, Tor Arne (Journal article, 2017)This paper presents four vision-based tracking system architectures for marine surface objects using a fixed-wing unmanned aerial vehicle (UAV) with a thermal camera mounted in a pan/tilt gimbal. The tracking systems ... -
UAV path planning using MILP with experiments
Albert, Anders; Leira, Frederik Stendahl; Imsland, Lars Struen (Journal article; Peer reviewed, 2017)In this paper, we look at the problem of tracking icebergs using multiple Unmanned Aerial Vehicles (UAVs). Our solutions use combinatorial optimization for UAV path planning by formulating a mixed integer linear programing ...