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Retailers have long been searching for ways to effectively understand their customers' behaviour in order to provide a smooth and pleasant shopping experience that attracts more customers everyday and maximises their revenue, consequently.…

Computer Vision and Pattern Recognition · Computer Science 2019-06-27 Mohammad Mahdi Kazemi Moghaddam , Ehsan Abbasnejad , Javen Shi

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

Anomaly detection aims to detect data that do not conform to regular patterns, and such data is also called outliers. The anomalies to be detected are often tiny in proportion, containing crucial information, and are suitable for…

Machine Learning · Computer Science 2023-06-06 Fan Xu , Nan Wang , Xibin Zhao

With advances in data-driven machine learning research, a wide variety of prediction models have been proposed to capture spatio-temporal features for the analysis of video streams. Recognising actions and detecting action transitions…

Computer Vision and Pattern Recognition · Computer Science 2024-03-06 Harshala Gammulle , David Ahmedt-Aristizabal , Simon Denman , Lachlan Tychsen-Smith , Lars Petersson , Clinton Fookes

We present a dual-pathway approach for recognizing fine-grained interactions from videos. We build on the success of prior dual-stream approaches, but make a distinction between the static and dynamic representations of objects and their…

Computer Vision and Pattern Recognition · Computer Science 2021-04-02 Tae Soo Kim , Jonathan Jones , Gregory D. Hager

Prison facilities, mental correctional institutions, sports bars and places of public protest are prone to sudden violence and conflicts. Surveillance systems play an important role in mitigation of hostile behavior and improvement of…

Human-Computer Interaction · Computer Science 2016-07-06 Amol Patwardhan , Gerald Knapp

We present a novel descriptor for crowd behavior analysis and anomaly detection. The goal is to measure by appropriate patterns the speed of formation and disintegration of groups in the crowd. This descriptor is inspired by the concept of…

Computer Vision and Pattern Recognition · Computer Science 2020-10-20 Giulia Orrù , Davide Ghiani , Maura Pintor , Gian Luca Marcialis , Fabio Roli

As humans we possess an intuitive ability for navigation which we master through years of practice; however existing approaches to model this trait for diverse tasks including monitoring pedestrian flow and detecting abnormal events have…

Computer Vision and Pattern Recognition · Computer Science 2017-02-21 Tharindu Fernando , Simon Denman , Sridha Sridharan , Clinton Fookes

Anomaly detection has many applications ranging from bank-fraud detection and cyber-threat detection to equipment maintenance and health monitoring. However, choosing a suitable algorithm for a given application remains a challenging design…

Anomaly detection is the process of finding data points that deviate from a baseline. In a real-life setting, anomalies are usually unknown or extremely rare. Moreover, the detection must be accomplished in a timely manner or the risk of…

Machine Learning · Computer Science 2019-04-26 Mariem Ben Fadhel , Kofi Nyarko

Model visualizations provide information that outputs alone might miss. But can we trust that model visualizations reflect model behavior? For instance, can they diagnose abnormal behavior such as planted backdoors or overregularization? To…

Machine Learning · Computer Science 2023-05-31 Jean-Stanislas Denain , Jacob Steinhardt

Network management and security is currently one of the most vibrant research areas, among which, research on detecting and identifying anomalies has attracted a lot of interest. Researchers are still struggling to find an effective and…

Networking and Internet Architecture · Computer Science 2010-07-09 Huy Nguyen , Tam Van Nguyen , Dong Il Kim , Deokjai Choi

Group regression is commonly used in 3D object detection to predict box parameters of similar classes in a joint head, aiming to benefit from similarities while separating highly dissimilar classes. For query-based perception methods, this…

Machine Learning · Computer Science 2023-08-29 Felicia Ruppel , Florian Faion , Claudius Gläser , Klaus Dietmayer

The definition of anomaly detection is the identification of an unexpected event. Real-time detection of extreme events such as wildfires, cyclones, or floods using satellite data has become crucial for disaster management. Although several…

Computer Vision and Pattern Recognition · Computer Science 2023-06-09 Akash Awasthi , Son Ly , Jaer Nizam , Samira Zare , Videet Mehta , Safwan Ahmed , Keshav Shah , Ramakrishna Nemani , Saurabh Prasad , Hien Van Nguyen

Anomaly detection is a method for discovering unusual and suspicious behavior. In many real-world scenarios, the examined events can be directly linked to the actions of an adversary, such as attacks on computer networks or frauds in…

Machine Learning · Computer Science 2020-04-23 Olga Petrova , Karel Durkota , Galina Alperovich , Karel Horak , Michal Najman , Branislav Bosansky , Viliam Lisy

In this paper we address the abnormality detection problem in crowded scenes. We propose to use Generative Adversarial Nets (GANs), which are trained using normal frames and corresponding optical-flow images in order to learn an internal…

Computer Vision and Pattern Recognition · Computer Science 2017-09-01 Mahdyar Ravanbakhsh , Moin Nabi , Enver Sangineto , Lucio Marcenaro , Carlo Regazzoni , Nicu Sebe

In the fields of statistics and unsupervised machine learning a fundamental and well-studied problem is anomaly detection. Anomalies are difficult to define, yet many algorithms have been proposed. Underlying the approaches is the nebulous…

Cryptography and Security · Computer Science 2022-05-16 Nassir Mohammad

Recently the use of video surveillance systems is widely increasing. Different places are equipped by camera surveillances such as hospitals, schools, airports, museums and military places in order to ensure the safety and security of the…

Computer Vision and Pattern Recognition · Computer Science 2016-08-09 Mabrouka Hagui , Mohamed Ali Mahjoub , Ahmed Boukhris

In this article, we propose the detection of crowd anomalies through the extraction of information in the form of time series from video format using a multimodal approach. Through pattern recognition algorithms and segmentation,…

Computer Vision and Pattern Recognition · Computer Science 2024-05-22 Alejandro Dionis-Ros , Joan Vila-Francés , Rafael Magdalena-Benedicto , Fernando Mateo , Antonio J. Serrano-López

Human action recognition is an important problem in computer vision. It has a wide range of applications in surveillance, human-computer interaction, augmented reality, video indexing, and retrieval. The varying pattern of spatio-temporal…

Computer Vision and Pattern Recognition · Computer Science 2020-09-03 Yogesh S Rawat , Shruti Vyas