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We present results from several projects aimed at enabling the real-time understanding of crowds and their behaviour in the built environment. We make use of CCTV video cameras that are ubiquitous throughout the developed and developing…

Computer Vision and Pattern Recognition · Computer Science 2019-04-24 Karthik Nandakumar , Sebastien Blandin , Laura Wynter

Event log analysis is an important task that security professionals undertake. Event logs record key information on activities that occur on computing devices, and due to the substantial number of events generated, they consume a large…

Artificial Intelligence · Computer Science 2025-02-04 Siraaj Akhtar , Saad Khan , Simon Parkinson

This article describes a comprehensive system for surveillance and monitoring applications. The development of an efficient real time video motion detection system is motivated by their potential for deployment in the areas where security…

Computer Vision and Pattern Recognition · Computer Science 2011-10-03 Sumita Mishra

Event management in sensor networks is a multidisciplinary field involving several steps across the processing chain. In this paper, we discuss the major steps that should be performed in real- or near real-time event handling including…

Distributed, Parallel, and Cluster Computing · Computer Science 2018-03-16 Vassilis Papataxiarhis , Stathes Hadjiefthymiades

Event sequence data record series of discrete events in the time order of occurrence. They are commonly observed in a variety of applications ranging from electronic health records to network logs, with the characteristics of large-scale,…

Human-Computer Interaction · Computer Science 2020-06-26 Yi Guo , Shunan Guo , Zhuochen Jin , Smiti Kaul , David Gotz , Nan Cao

Robot manipulation is a common task in fields like industrial manufacturing. Detecting when objects slip from a robot's grasp is crucial for safe and reliable operation. Event cameras, which register pixel-level brightness changes at high…

Computer Vision and Pattern Recognition · Computer Science 2025-05-29 Thilo Reinold , Suman Ghosh , Guillermo Gallego

Accident detection using Closed Circuit Television (CCTV) footage is one of the most imperative features for enhancing transport safety and efficient traffic control. To this end, this research addresses the issues of supervised monitoring…

Computer Vision and Pattern Recognition · Computer Science 2025-06-23 Zhenghao Xi , Xiang Liu , Yaqi Liu , Yitong Cai , Yangyu Zheng

Accurately estimating urban rail platform occupancy can enhance transit agencies' ability to make informed operational decisions, thereby improving safety, operational efficiency, and customer experience, particularly in the context of…

Computer Vision and Pattern Recognition · Computer Science 2025-08-07 Riccardo Fiorista , Awad Abdelhalim , Anson F. Stewart , Gabriel L. Pincus , Ian Thistle , Jinhua Zhao

Anomaly detection in crowd videos has become a popular area of research for the computer vision community. Several existing methods generally perform a prior training about the scene with or without the use of labeled data. However, it is…

Computer Vision and Pattern Recognition · Computer Science 2019-06-04 Arindam Sikdar , Ananda S. Chowdhury

Event cameras are novel sensors that report brightness changes in the form of asynchronous "events" instead of intensity frames. They have significant advantages over conventional cameras: high temporal resolution, high dynamic range, and…

Computer Vision and Pattern Recognition · Computer Science 2019-04-18 Henri Rebecq , René Ranftl , Vladlen Koltun , Davide Scaramuzza

Action detection and public traffic safety are crucial aspects of a safe community and a better society. Monitoring traffic flows in a smart city using different surveillance cameras can play a significant role in recognizing accidents and…

Computer Vision and Pattern Recognition · Computer Science 2022-08-23 Victor Adewopo , Nelly Elsayed , Zag ElSayed , Murat Ozer , Ahmed Abdelgawad , Magdy Bayoumi

Multimedia anomaly datasets play a crucial role in automated surveillance. They have a wide range of applications expanding from outlier objects/ situation detection to the detection of life-threatening events. For more than 1.5 decades,…

Computer Vision and Pattern Recognition · Computer Science 2022-04-05 Pratibha Kumari , Anterpreet Kaur Bedi , Mukesh Saini

Automatic detection of animals that have strayed into human inhabited areas has important security and road safety applications. This paper attempts to solve this problem using deep learning techniques from a variety of computer vision…

Computer Vision and Pattern Recognition · Computer Science 2020-01-15 Abhineet Singh , Marcin Pietrasik , Gabriell Natha , Nehla Ghouaiel , Ken Brizel , Nilanjan Ray

Anomaly detection is a popular and vital task in various research contexts, which has been studied for several decades. To ensure the safety of people's lives and assets, video surveillance has been widely deployed in various public spaces,…

Computer Vision and Pattern Recognition · Computer Science 2021-10-12 Jing Ren , Feng Xia , Yemeng Liu , Ivan Lee

Automated driving has become a major topic of interest not only in the active research community but also in mainstream media reports. Visual perception of such intelligent vehicles has experienced large progress in the last decade thanks…

Computer Vision and Pattern Recognition · Computer Science 2021-02-12 Jasmin Breitenstein , Jan-Aike Termöhlen , Daniel Lipinski , Tim Fingscheidt

The Big Video Data generated in today's smart cities has raised concerns from its purposeful usage perspective, where surveillance cameras, among many others are the most prominent resources to contribute to the huge volumes of data, making…

Computer Vision and Pattern Recognition · Computer Science 2022-09-26 Nadia Mumtaz , Naveed Ejaz , Shabana Habib , Syed Muhammad Mohsin , Prayag Tiwari , Shahab S. Band , Neeraj Kumar

Traffic signal control is an important and challenging real-world problem, which aims to minimize the travel time of vehicles by coordinating their movements at the road intersections. Current traffic signal control systems in use still…

Machine Learning · Computer Science 2020-01-17 Hua Wei , Guanjie Zheng , Vikash Gayah , Zhenhui Li

Object detection is a computer vision task that has become an integral part of many consumer applications today such as surveillance and security systems, mobile text recognition, and diagnosing diseases from MRI/CT scans. Object detection…

Computer Vision and Pattern Recognition · Computer Science 2022-01-20 Abhishek Balasubramaniam , Sudeep Pasricha

The traditional way of sentence-level event detection involves two important subtasks: trigger identification and trigger classifications, where the identified event trigger words are used to classify event types from sentences. However,…

Computation and Language · Computer Science 2023-06-27 Tongtao Ling , Lei Chen , Huangxu Sheng , Zicheng Cai , Hai-Lin Liu

The problem of quickest detection of dynamic events in networks is studied. At some unknown time, an event occurs, and a number of nodes in the network are affected by the event, in that they undergo a change in the statistics of their…

Signal Processing · Electrical Eng. & Systems 2018-07-18 Shaofeng Zou , Venugopal V. Veeravalli , Jian Li , Don Towsley