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Pre-screening of ship proposals is now employed by top ship detectors to avoid exhaustive search across image. In very high resolution (VHR) optical image, ships appeared as a cluster of abnormal bright pixels in open sea clutter…

Computer Vision and Pattern Recognition · Computer Science 2018-04-26 Viet Hung Luu , Nguyen Hoang Hoa Luong , Quang Hung Bui , Thi Nhat Thanh Nguyen

Aliased seabed echoes, also known as "false bottoms" or "shadow bottoms", are a form of echogram corruption caused by seabed reverberation from preceding pings coinciding with echoes from the current ping. These aliases are usually either…

Signal Processing · Electrical Eng. & Systems 2019-04-25 Robert Blackwell , Richard Harvey , Bastien Queste , Sophie Fielding

Acoustic telemetry data plays a vital role in understanding the behaviour and movement of aquatic animals. However, these datasets, which often consist of millions of individual data points, frequently contain anomalous movements that pose…

Machine Learning · Computer Science 2025-02-04 Siphendulwe Zaza , Marcellin Atemkeng , Taryn S. Murray , John David Filmalter , Paul D. Cowley

In this work a novel ships dataset is proposed consisting of more than 56k images of marine vessels collected by means of web-scraping and including 12 ship categories. A YOLOv3 single-stage detector based on Keras API is built on top of…

Computer Vision and Pattern Recognition · Computer Science 2020-03-03 Alessandro Betti , Benedetto Michelozzi , Andrea Bracci , Andrea Masini

Recent advances in technology have made our work easier compare to earlier times. Computer network is growing day by day but while discussing about the security of computers and networks it has always been a major concerns for organizations…

Distributed, Parallel, and Cluster Computing · Computer Science 2014-04-11 Ravi Ranjan , G. Sahoo

Rip currents pose a significant danger to those who visit beaches, as they can swiftly pull swimmers away from shore. Detecting these currents currently relies on costly equipment and is challenging to implement on a larger scale. The…

Image and Video Processing · Electrical Eng. & Systems 2024-02-22 Anchen Sun , Kaiqi Yang

Oriented bounding box regression is crucial for oriented object detection. However, regression-based methods often suffer from boundary problems and the inconsistency between loss and evaluation metrics. In this paper, a modulated Kalman…

Computer Vision and Pattern Recognition · Computer Science 2022-07-01 Xinyi Yu , Jiangping Lu , Xinyi Yu , Mi Lin , Linlin Ou

Diluted bitumen spills in freshwater environments pose significant challenges for detection and remediation due to the complex behaviour of the material once released, rendering traditional oil monitoring techniques, such as aerial surveys…

Instrumentation and Detectors · Physics 2025-07-18 Graziella Bedenik , Melissa Greeff , Matthew Robertson

This paper considers the constrained sampling multi-stream quickest change detection problem, also known as the bandit quickest change detection problem. One stream contains a change-point that shifts its mean by an unknown amount. The goal…

Systems and Control · Electrical Eng. & Systems 2026-03-30 Joshua Kartzman , Calvin Hawkins , Matthew Hale

Visual anomaly detection in real-world industrial settings faces two major limitations. First, most existing methods are trained on purely normal data or on unlabeled datasets assumed to be predominantly normal, presuming the absence of…

Computer Vision and Pattern Recognition · Computer Science 2026-02-05 Anindya Sundar Das , Monowar Bhuyan

Four-variable-independent-regression localization losses, such as Smooth-$\ell_1$ Loss, are used by default in modern detectors. Nevertheless, this kind of loss is oversimplified so that it is inconsistent with the final evaluation metric,…

Computer Vision and Pattern Recognition · Computer Science 2021-12-06 Hanyang Peng , Shiqi Yu

This paper presents an active model-based FTC (fault-tolerant control) method for the dynamic positioning of a class of underwater vehicles with thruster redundancy. Compared to the widely used state and parameter estimation methods, this…

Systems and Control · Electrical Eng. & Systems 2025-03-25 Ji-Hong Li

In this paper, we investigate the learning-augmented $k$-median clustering problem, which aims to improve the performance of traditional clustering algorithms by preprocessing the point set with a predictor of error rate $\alpha \in [0,1)$.…

Data Structures and Algorithms · Computer Science 2026-03-12 Kangke Cheng , Shihong Song , Guanlin Mo , Hu Ding

Drowning is an omnipresent risk associated with any activity on or in the water, and rescuing a drowning person is particularly challenging because of the time pressure, making a short response time important. Further complicating water…

Computer Vision and Pattern Recognition · Computer Science 2026-04-21 Sascha Emanuel Zell , Toni Schneidereit , Armin Fügenschuh , Michael Breuß

In the maritime sector, safe vessel navigation is of great importance, particularly in congested harbors and waterways. The focus of this work is to estimate the distance between an object of interest and potential obstacles using a…

Robotics · Computer Science 2021-08-10 Jonas le Fevre Sejersen , Rui Pimentel de Figueiredo , Erdal Kayacan

Mobile wireless sensors are increasingly recognized as a valuable tool for monitoring critical infrastructures. An important use case is the discovery of leaks and inflows in pipe networks using a swarm of floating sensor nodes. While…

Multiagent Systems · Computer Science 2021-09-02 Martin Haug , Felix Lorenz , Lauritz Thamsen

Port berthing sites are regions of high interest for monitoring and optimizing port operations. Data sourced from the Automatic Identification System (AIS) can be superimposed on berths enabling their real-time monitoring and revealing…

Machine Learning · Computer Science 2025-05-20 Andreas Hadjipieris , Neofytos Dimitriou , Ognjen Arandjelović

Tracking multiple moving objects in real-time in a dynamic threat environment is an important element in national security and surveillance system. It helps pinpoint and distinguish potential candidates posing threats from other normal…

Machine Learning · Computer Science 2022-06-27 Imtiaz Ahmed , Mikyoung Jun , Yu Ding

GPS-based vehicle localization and tracking suffers from unstable positional information commonly experienced in tunnel segments and in dense urban areas. Also, both Visual Odometry (VO) and Visual Inertial Odometry (VIO) are susceptible to…

Robotics · Computer Science 2024-09-04 Yu Xiang Tan , Malika Meghjani

This paper proposes an AI-based scheme for islanding detection in active distribution networks. By reviewing existing studies, it is clear that there are several gaps in the field to ensure reliable islanding detection, including (i) model…

Signal Processing · Electrical Eng. & Systems 2024-10-21 Amirhosein Alizadeh , Seyed Fariborz Zarei , Mohammadhadi Shateri
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