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Recognizing abnormal events such as traffic violations and accidents in natural driving scenes is essential for successful autonomous driving and advanced driver assistance systems. However, most work on video anomaly detection suffers from…

Computer Vision and Pattern Recognition · Computer Science 2019-07-29 Yu Yao , Mingze Xu , Yuchen Wang , David J. Crandall , Ella M. Atkins

Contrastive learning has moved the state of the art for many tasks in computer vision and information retrieval in recent years. This poster is the first work that applies supervised contrastive learning to the task of product matching in…

Machine Learning · Computer Science 2022-05-03 Ralph Peeters , Christian Bizer

Abnormal event detection in video is a challenging vision problem. Most existing approaches formulate abnormal event detection as an outlier detection task, due to the scarcity of anomalous data during training. Because of the lack of prior…

Computer Vision and Pattern Recognition · Computer Science 2019-04-09 Radu Tudor Ionescu , Fahad Shahbaz Khan , Mariana-Iuliana Georgescu , Ling Shao

We present a self-supervised learning method to learn audio and video representations. Prior work uses the natural correspondence between audio and video to define a standard cross-modal instance discrimination task, where a model is…

Computer Vision and Pattern Recognition · Computer Science 2021-03-31 Pedro Morgado , Ishan Misra , Nuno Vasconcelos

Trajectory prediction is an essential task for successful human robot interaction, such as in autonomous driving. In this work, we address the problem of predicting future pedestrian trajectories in a first person view setting with a moving…

Computer Vision and Pattern Recognition · Computer Science 2022-07-19 Marah Halawa , Olaf Hellwich , Pia Bideau

Anomaly detection is a critical requirement for ensuring safety in autonomous driving. In this work, we leverage Cooperative Perception to share information across nearby vehicles, enabling more accurate identification and consensus of…

Multiagent Systems · Computer Science 2025-01-30 Ashish Bastola , Hao Wang , Abolfazl Razi

Contrastive learning is a well-established paradigm in representation learning. The standard framework of contrastive learning minimizes the distance between "similar" instances and maximizes the distance between dissimilar ones in the…

Machine Learning · Computer Science 2025-02-06 Naghmeh Ghanooni , Barbod Pajoum , Harshit Rawal , Sophie Fellenz , Vo Nguyen Le Duy , Marius Kloft

We propose a supervised contrastive learning framework for video representation learning that leverages temporally global context. We introduce a video to image aggregation strategy that spatially arranges multiple frames from each video…

Computer Vision and Pattern Recognition · Computer Science 2025-12-16 Shaif Chowdhury , Mushfika Rahman , Greg Hamerly

Time series anomaly detection is critical for a wide range of applications. It aims to identify deviant samples from the normal sample distribution in time series. The most fundamental challenge for this task is to learn a representation…

Machine Learning · Computer Science 2023-10-12 Yiyuan Yang , Chaoli Zhang , Tian Zhou , Qingsong Wen , Liang Sun

Contrastive learning is commonly used as a method of self-supervised learning with the "anchor" and "positive" being two random augmentations of a given input image, and the "negative" is the set of all other images. However, the…

Computer Vision and Pattern Recognition · Computer Science 2022-08-16 Rishab Balasubramanian , Kunal Rathore

Anomaly detection through video analysis is of great importance to detect any anomalous vehicle/human behavior at a traffic intersection. While most existing works use neural networks and conventional machine learning methods based on…

Computer Vision and Pattern Recognition · Computer Science 2018-08-31 Mohammmad Farhadi Bajestani , Seyed Soroush Heidari Rahmat Abadi , Seyed Mostafa Derakhshandeh Fard , Roozbeh Khodadadeh

Graph-based anomaly detection has been widely used for detecting malicious activities in real-world applications. Existing attempts to address this problem have thus far focused on structural feature engineering or learning in the binary…

Machine Learning · Computer Science 2022-08-31 Bo Chen , Jing Zhang , Xiaokang Zhang , Yuxiao Dong , Jian Song , Peng Zhang , Kaibo Xu , Evgeny Kharlamov , Jie Tang

As the digital landscape becomes more interconnected, the frequency and severity of zero-day attacks, have significantly increased, leading to an urgent need for innovative Intrusion Detection Systems (IDS). Machine Learning-based IDS that…

Cryptography and Security · Computer Science 2025-05-15 Ippokratis Koukoulis , Ilias Syrigos , Thanasis Korakis

Deep visuomotor policy learning, which aims to map raw visual observation to action, achieves promising results in control tasks such as robotic manipulation and autonomous driving. However, it requires a huge number of online interactions…

Computer Vision and Pattern Recognition · Computer Science 2022-07-19 Qihang Zhang , Zhenghao Peng , Bolei Zhou

Video Anomaly Detection (VAD) automates the identification of unusual events, such as security threats in surveillance videos. In real-world applications, VAD models must effectively operate in cross-domain settings, identifying rare…

Computer Vision and Pattern Recognition · Computer Science 2024-08-12 Yashika Jain , Ali Dabouei , Min Xu

Video anomaly detection is commonly used in many applications such as security surveillance and is very challenging.A majority of recent video anomaly detection approaches utilize deep reconstruction models, but their performance is often…

Computer Vision and Pattern Recognition · Computer Science 2021-05-28 Xuanzhao Wang , Zhengping Che , Bo Jiang , Ning Xiao , Ke Yang , Jian Tang , Jieping Ye , Jingyu Wang , Qi Qi

Anomaly detection on attributed networks attracts considerable research interests due to wide applications of attributed networks in modeling a wide range of complex systems. Recently, the deep learning-based anomaly detection methods have…

Machine Learning · Computer Science 2021-05-07 Yixin Liu , Zhao Li , Shirui Pan , Chen Gong , Chuan Zhou , George Karypis

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

With the rapid development of Internet of Things technologies, the next generation traffic monitoring infrastructures are connected via the web, to aid traffic data collection and intelligent traffic management. One of the most important…

Artificial Intelligence · Computer Science 2023-04-25 Yue Hu , Yuhang Zhang , Yanbing Wang , Daniel Work

Neural networks have revolutionized various domains, exhibiting remarkable accuracy in tasks like natural language processing and computer vision. However, their vulnerability to slight alterations in input samples poses challenges,…

Computer Vision and Pattern Recognition · Computer Science 2023-11-15 Shashank Kotyan , Danilo Vasconcellos Vargas