Results 41 to 50 of about 1,765,935 (236)
Self Calibration of a Sonar–Vision System for Underwater Vehicles: A New Method and a Dataset
Sensors, 2023 Monocular cameras and multibeam imaging sonars are common sensors of Unmanned Underwater Vehicles (UUV). In this paper, we propose a new method for calibrating a hybrid sonar–vision system.
Nicolas Pecheux +3 more
doaj +1 more source
Calibration and image formation in the ABACUS sonar system [PDF]
, 2005 Includes bibliographical references (leaves 138-139)
Ng, Ferdinand
core +1 more source
Fish Segmentation in Sonar Images by Mask R-CNN on Feature Maps of Conditional Random Fields
Sensors, 2021 Imaging sonar systems are widely used for monitoring fish behavior in turbid or low ambient light waters. For analyzing fish behavior in sonar images, fish segmentation is often required.
Chin-Chun Chang +2 more
doaj +1 more source
Designing Wire Mazes for Replicating Natural Echoes to Study Bat Biosonar Function
Advanced Intelligent Systems, EarlyView.A validated framework combining efficient physical modeling (multiple scattering model) and deep learning is presented to guide wire‐maze design for bat biosonar studies. This approach rapidly generates large datasets to test acoustic distinguishability among wire arrangements.
Chunlin Jia +3 more
wiley +1 more source
Archaeological Prospection, EarlyView.ABSTRACT Medieval and early modern drowned villages in the intertidal zone of the Scheldt estuary (the Netherlands) constitute intriguing yet largely understudied components of north‐western Europe's underwater cultural heritage. Despite their high archaeological potential as time capsules of past settlement landscapes, research has remained limited ...
Jan Trachet +9 more
wiley +1 more source
Multistatic Modular Real‐Time MIMO‐SONAR Systems
IET Radar, Sonar & NavigationMulitstatic SONAR networks (MSNs) have the potential to improve the imaging quality of underwater areas due to the increased degree of freedom. The additional signal processing required for such a network of distributed SONAR nodes compared to monostatic
Frederik Kühne +5 more
doaj +1 more source
Scanning Parametric Sediment Echosounder as Tool for Underwater Archaeological Prospection
Archaeological Prospection, EarlyView.ABSTRACT Underwater cultural heritage 3D prospection techniques, especially for remains that are partly buried in the ground, are only very rarely available and often can only be applied with considerable technical effort. To overcome this limitation, we evaluate a methodological adaption of widely used and available single channel parametric sediment ...
Dennis Wilken +5 more
wiley +1 more source
A new imaging riometer based on Mills Cross technique [PDF]
, 2003 A new type of imaging riometer system based on a Mills Cross antenna array is currently under construction by the Ionosphere and Radio Propagation Group, Department of Communication Systems, Lancaster in collaboration with the Max-Planck-Institut für ...
Nielsen, E. +6 more
core +4 more sources
SONIC: Sonar Image Correspondence using Pose Supervised Learning for Imaging Sonars
2024 IEEE International Conference on Robotics and Automation (ICRA)In this paper, we address the challenging problem of data association for underwater SLAM through a novel method for sonar image correspondence using learned features. We introduce SONIC (SONar Image Correspondence), a pose-supervised network designed to yield robust feature correspondence capable of withstanding viewpoint variations.
Samiran Gode +2 more
openaire +4 more sources
Object Detection in Sonar Images [PDF]
Electronics, 2020 The scope of the project described in this paper is the development of a generalized underwater object detection solution based on Automated Machine Learning (AutoML) principles. Multiple scales, dual priorities, speed, limited data, and class imbalance make object detection a very challenging task. In underwater object detection, further complications
Karimanzira, Divas +3 more
openaire +1 more source