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In critical applications of anomaly detection including computer security and fraud prevention, the anomaly detector must be configurable by the analyst to minimize the effort on false positives. One important way to configure the anomaly…

Machine Learning · Computer Science 2018-09-19 Shubhomoy Das , Md Rakibul Islam , Nitthilan Kannappan Jayakodi , Janardhan Rao Doppa

Industrial visual inspection aims at detecting surface defects in products during the manufacturing process. Although existing anomaly detection models have shown great performance on many public benchmarks, their limited adjustability and…

Computer Vision and Pattern Recognition · Computer Science 2023-05-16 Tongkun Liu , Bing Li , Xiao Du , Bingke Jiang , Xiao Jin , Liuyi Jin , Zhuo Zhao

Semi-supervised semantic segmentation involves assigning pixel-wise labels to unlabeled images at training time. This is useful in a wide range of real-world applications where collecting pixel-wise labels is not feasible in time or cost.…

Computer Vision and Pattern Recognition · Computer Science 2023-08-08 Jianfeng Wang , Daniela Massiceti , Xiaolin Hu , Vladimir Pavlovic , Thomas Lukasiewicz

Visual anomaly detection is an important and challenging problem in the field of machine learning and computer vision. This problem has attracted a considerable amount of attention in relevant research communities. Especially in recent…

Computer Vision and Pattern Recognition · Computer Science 2021-09-28 Jie Yang , Ruijie Xu , Zhiquan Qi , Yong Shi

This paper has dual aims. First is to develop practical universal coding methods for unlabeled graphs. Second is to use these for graph anomaly detection. The paper develops two coding methods for unlabeled graphs: one based on the degree…

Information Theory · Computer Science 2018-04-10 Anders Host-Madsen , June Zhang

Detecting anomalies in data is a vital task, with numerous high-impact applications in areas such as security, finance, health care, and law enforcement. While numerous techniques have been developed in past years for spotting outliers and…

Social and Information Networks · Computer Science 2014-04-29 Leman Akoglu , Hanghang Tong , Danai Koutra

Increasing the semantic understanding and contextual awareness of machine learning models is important for improving robustness and reducing susceptibility to data shifts. In this work, we leverage contextual awareness for the anomaly…

Machine Learning · Computer Science 2022-03-22 Nathan Vaska , Kevin Leahy , Victoria Helus

Over the past decade, automated methods have been developed to detect cracks more efficiently, accurately, and objectively, with the ultimate goal of replacing conventional manual visual inspection techniques. Among these methods, semantic…

Computer Vision and Pattern Recognition · Computer Science 2024-05-07 Nachuan Ma , Rui Fan , Lihua Xie

In this paper, we introduce a novel task termed unified anomaly detection and classification, which aims to simultaneously detect anomalous regions in images and identify their specific categories. Existing methods typically treat anomaly…

Computer Vision and Pattern Recognition · Computer Science 2026-02-04 Ximiao Zhang , Min Xu , Zheng Zhang , Junlin Hu , Xiuzhuang Zhou

Nearest neighbor (kNN) methods utilizing deep pre-trained features exhibit very strong anomaly detection performance when applied to entire images. A limitation of kNN methods is the lack of segmentation map describing where the anomaly…

Computer Vision and Pattern Recognition · Computer Science 2021-02-04 Niv Cohen , Yedid Hoshen

Computer vision has evolved in the last decade as a key technology for numerous applications replacing human supervision. In this paper, we present a survey on relevant visual surveillance related researches for anomaly detection in public…

Computer Vision and Pattern Recognition · Computer Science 2020-12-17 Santhosh Kelathodi Kumaran , Debi Prosad Dogra , Partha Pratim Roy

Lane detection is an important yet challenging task in autonomous driving, which is affected by many factors, e.g., light conditions, occlusions caused by other vehicles, irrelevant markings on the road and the inherent long and thin…

Computer Vision and Pattern Recognition · Computer Science 2019-05-10 Yuenan Hou

The current concept of Smart Cities influences urban planners and researchers to provide modern, secured and sustainable infrastructure and give a decent quality of life to its residents. To fulfill this need video surveillance cameras have…

Computer Vision and Pattern Recognition · Computer Science 2021-08-10 Devashree R. Patrikar , Mayur Rajram Parate

We address an anomaly detection setting in which training sequences are unavailable and anomalies are scored independently of temporal ordering. Current algorithms in anomaly detection are based on the classical density estimation approach…

Computer Vision and Pattern Recognition · Computer Science 2016-09-29 Allison Del Giorno , J. Andrew Bagnell , Martial Hebert

Self-supervised learning allows for better utilization of unlabelled data. The feature representation obtained by self-supervision can be used in downstream tasks such as classification, object detection, segmentation, and anomaly…

Computer Vision and Pattern Recognition · Computer Science 2020-06-18 Rabia Ali , Muhammad Umar Karim Khan , Chong Min Kyung

Anomaly segmentation is essential for industrial quality, maintenance, and stability. Existing text-guided zero-shot anomaly segmentation models are effective but rely on fixed prompts, limiting adaptability in diverse industrial scenarios.…

Computer Vision and Pattern Recognition · Computer Science 2025-04-21 SoYoung Park , Hyewon Lee , Mingyu Choi , Seunghoon Han , Jong-Ryul Lee , Sungsu Lim , Tae-Ho Kim

Time-stamp aware anomaly detection in traffic videos is an essential task for the advancement of the intelligent transportation system. Anomaly detection in videos is a challenging problem due to sparse occurrence of anomalous events,…

Computer Vision and Pattern Recognition · Computer Science 2019-06-12 Kuldeep Marotirao Biradar , Ayushi Gupta , Murari Mandal , Santosh Kumar Vipparthi

The increasing availability of traffic data from sensor networks has created new opportunities for understanding vehicular dynamics and identifying anomalies. In this study, we employ clustering techniques to analyse traffic flow data with…

Machine Learning · Computer Science 2025-09-26 Davide Moretti , Elia Onofri , Emiliano Cristiani

Anomaly detection (AD) in a surveillance scenario is an emerging and challenging field of research. For autonomous vehicles like drones or cars, it is immensely important to distinguish between normal and abnormal states in real-time.…

Computer Vision and Pattern Recognition · Computer Science 2020-07-15 Sayeed Shafayet Chowdhury , Kazi Mejbaul Islam , Rouhan Noor

Semantic image segmentation is an essential component of modern autonomous driving systems, as an accurate understanding of the surrounding scene is crucial to navigation and action planning. Current state-of-the-art approaches in semantic…

Computer Vision and Pattern Recognition · Computer Science 2016-12-07 Tobias Pohlen , Alexander Hermans , Markus Mathias , Bastian Leibe