Results 51 to 60 of about 2,798,162 (216)

Asynchronous Multisonar Data Integration Approach Used to Detect Sparse Targets

IEEE Access, 2019
Due to the advantage of the distributed multisensor detection system which makes sonar detect further and more accurate estimation of the target state, distributed multisensor data fusion algorithms are widely applied to the sonar detection system ...
Yang Chen, Xueli Sheng, Longxiang Guo, Pengfei Li, Haoyan Hao, Jingwei Yin   +5 more
doaj   +1 more source

Underwater Macroplastic Detection Using Imaging Sonars

Frontiers in Environmental Science, 2022
Plastic pollution in the ocean occurs mainly via riverine transport. In rivers, plastic is pervasive in sediments and in the water column. Monitoring of floating plastics in rivers is time consuming as it is usually collected using nets and classified by
Natasha Y. Flores, Stephanie B. Oswald, Rob S. E. W. Leuven, Frank P. L. Collas   +3 more
doaj   +1 more source

Effectiveness Assessment of Underwater Area Cruise Based on the ADC Method

Journal of Field Robotics, EarlyView.
ABSTRACT Underwater area surveillance plays a crucial role in upholding national security, safeguarding strategic interests, and mitigating potential threats. Despite its significance, a notable gap persists in the availability of comprehensive models for assessing its effectiveness.
Qingwei Liang, Yuxin Lin, Mingyang Luo, Zhanghong Zeng   +3 more
wiley   +1 more source

Chrs-Net: A Dual-Stream YOLO Network for Underwater RGB–Sonar Object Detection

Journal of Marine Science and Engineering
Underwater RGB–sonar object detection remains challenging due to severe optical degradation, strong sonar noise, and spatial misalignment between heterogeneous modalities.
Chuheng Zhang, Hongli Xu, Pangyi Xiao, Han Wang, Jingyu Ru, Hongxu Yang   +5 more
doaj   +1 more source

FLSea: Underwater Visual–Inertial and Stereovision Forward‐Looking Data Sets

Journal of Field Robotics, EarlyView.
ABSTRACT Visibility underwater is challenging and degrades as the distance between the subject and the camera increases. That is why forward‐looking underwater computer vision tasks are difficult. We have collected underwater forward‐looking stereovision and visual–inertial image sets using two underwater imaging platforms, a stereo camera rig, and an ...
Yelena Randall, Ori Lifschitz, Tali Treibitz   +2 more
wiley   +1 more source

Formation Control With Obstacle Avoidance of Underwater Swarms Based on Relative Visual Feedback

Journal of Field Robotics, EarlyView.
ABSTRACT Underwater multi‐robot and swarm systems require advanced methodologies for controlling collective behavior. Conventional single‐robot techniques, such as tethering, sonar imaging, and acoustic localization, are not scalable or effective for swarm applications.
Andrea Infanti, Saverio Iacoponi, Saif Alameri, Mohamed El Hanbaly, Mohammed Tarnini, Cesare Stefanini, Giulia De Masi, Federico Renda   +7 more
wiley   +1 more source

Robust Underwater Object Detection and Relative Navigation Using Simulation-Aided Sonar Image Translation

한국해양공학회지
Robust underwater object detection and relative navigation remain challenging because of the severe degradation of sonar imagery caused by acoustic noise and artifacts.
Eunsu Kim, Seonghun Hong, Sukmin Yoon
doaj   +1 more source

Dumpsite Seabed Characterization of the San Pedro Basin, CA, From Autonomous Vehicle Observations

Journal of Field Robotics, EarlyView.
ABSTRACT A wide‐area seabed survey was conducted using autonomous underwater vehicles (AUVs) in a known dumpsite off the coast of Southern California that has been found to have widespread sediment contamination from the chemical dichlorodiphenyltrichloroethane (DDT).
Ryan A. McCarthy, Dylan Kriegman, Sophia T. Merrifield, Heidi Batchelor, Eric J. Terrill   +4 more
wiley   +1 more source

Estudo e desenvolvimento de algoritmos de sonar ativo para o mapeamento de áreas submersas [PDF]

, 2015
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Mecânica, Florianópolis, 2015.Recentes avanços no cenário marítimo brasileiro - como a descoberta e exploração do pré-sal e a ...
Ristow, João Paulo
core  

Self-Training Can Reduce Detection False Alarm Rate of High-Resolution Imaging Sonar

Applied Sciences
Imaging sonar is a primary means of underwater detection, but it faces challenges of high false alarm rates in sonar image target detection due to factors such as reverberation, noise, and resolution.
Jingqi Han, Yue Fan, Zheng He, Zhenhang You, Peng Zhang, Zhengliang Hu   +5 more
doaj   +1 more source