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This thesis is part of a CIFRE agreement between the company Othello and the LIASD laboratory. The objective is to develop an artificial intelligence system that can detect real-time dangers in a video stream. To achieve this, a novel…

Computer Vision and Pattern Recognition · Computer Science 2024-12-02 Fabien Poirier

Perceiving meaningful activities in a long video sequence is a challenging problem due to ambiguous definition of 'meaningfulness' as well as clutters in the scene. We approach this problem by learning a generative model for regular motion…

Computer Vision and Pattern Recognition · Computer Science 2016-04-18 Mahmudul Hasan , Jonghyun Choi , Jan Neumann , Amit K. Roy-Chowdhury , Larry S. Davis

Video anomaly detection (VAD) has been paid increasing attention due to its potential applications, its current dominant tasks focus on online detecting anomalies% at the frame level, which can be roughly interpreted as the binary or…

Computer Vision and Pattern Recognition · Computer Science 2024-02-29 Peng Wu , Jing Liu , Xiangteng He , Yuxin Peng , Peng Wang , Yanning Zhang

In this paper, we propose a method for real-time anomaly detection and localization in crowded scenes. Each video is defined as a set of non-overlapping cubic patches, and is described using two local and global descriptors. These…

Computer Vision and Pattern Recognition · Computer Science 2015-11-24 Mohammad Sabokrou , Mahmood Fathy , Mojtaba Hosseini , Reinhard Klette

Anomaly Detection is a relevant problem in numerous real-world applications, especially when dealing with images. However, little attention has been paid to the issue of changes over time in the input data distribution, which may cause a…

Computer Vision and Pattern Recognition · Computer Science 2024-03-26 Nikola Bugarin , Jovana Bugaric , Manuel Barusco , Davide Dalle Pezze , Gian Antonio Susto

Applying image processing algorithms independently to each frame of a video often leads to undesired inconsistent results over time. Developing temporally consistent video-based extensions, however, requires domain knowledge for individual…

Computer Vision and Pattern Recognition · Computer Science 2018-08-02 Wei-Sheng Lai , Jia-Bin Huang , Oliver Wang , Eli Shechtman , Ersin Yumer , Ming-Hsuan Yang

Recent efforts towards video anomaly detection (VAD) try to learn a deep autoencoder to describe normal event patterns with small reconstruction errors. The video inputs with large reconstruction errors are regarded as anomalies at the test…

Computer Vision and Pattern Recognition · Computer Science 2021-09-03 Yuandu Lai , Yahong Han , Yaowei Wang

We present a novel unsupervised deep learning framework for anomalous event detection in complex video scenes. While most existing works merely use hand-crafted appearance and motion features, we propose Appearance and Motion DeepNet (AMDN)…

Computer Vision and Pattern Recognition · Computer Science 2015-10-07 Dan Xu , Elisa Ricci , Yan Yan , Jingkuan Song , Nicu Sebe

This work presents an unsupervised learning based approach to the ubiquitous computer vision problem of image matching. We start from the insight that the problem of frame-interpolation implicitly solves for inter-frame correspondences.…

Computer Vision and Pattern Recognition · Computer Science 2016-03-30 Gucan Long , Laurent Kneip , Jose M. Alvarez , Hongdong Li

The automatic detection of changes or anomalies between multispectral and hyperspectral images collected at different time instants is an active and challenging research topic. To effectively perform change-point detection in multitemporal…

Signal Processing · Electrical Eng. & Systems 2022-11-28 Ricardo Augusto Borsoi , Cédric Richard , André Ferrari , Jie Chen , José Carlos Moreira Bermudez

Deep learning-based approaches have achieved significant improvements on public video anomaly datasets, but often do not perform well in real-world applications. This paper addresses two issues: the lack of labeled data and the difficulty…

Computer Vision and Pattern Recognition · Computer Science 2024-04-22 Giacomo D'Amicantonio , Egor Bondarau , Peter H. N. de With

In this paper, we propose a deep convolutional neural network (CNN) for anomaly detection in surveillance videos. The model is adapted from a typical auto-encoder working on video patches under the perspective of sparse combination…

Computer Vision and Pattern Recognition · Computer Science 2019-08-20 Trong Nguyen Nguyen , Jean Meunier

Due to the limited availability of anomalous samples for training, video anomaly detection is commonly viewed as a one-class classification problem. Many prevalent methods investigate the reconstruction difference produced by AutoEncoders…

Computer Vision and Pattern Recognition · Computer Science 2023-03-10 Xiangyu Huang , Caidan Zhao , Chenxing Gao , Lvdong Chen , Zhiqiang Wu

Video frame interpolation is a challenging problem because there are different scenarios for each video depending on the variety of foreground and background motion, frame rate, and occlusion. It is therefore difficult for a single network…

Computer Vision and Pattern Recognition · Computer Science 2020-04-03 Myungsub Choi , Janghoon Choi , Sungyong Baik , Tae Hyun Kim , Kyoung Mu Lee

Video anomaly detection is a core problem in vision. Correctly detecting and identifying anomalous behaviors in pedestrians from video data will enable safety-critical applications such as surveillance, activity monitoring, and human-robot…

Computer Vision and Pattern Recognition · Computer Science 2022-07-07 Asiegbu Miracle Kanu-Asiegbu , Ram Vasudevan , Xiaoxiao Du

Video Anomaly Detection~(VAD) focuses on identifying anomalies within videos. Supervised methods require an amount of in-domain training data and often struggle to generalize to unseen anomalies. In contrast, training-free methods leverage…

Computer Vision and Pattern Recognition · Computer Science 2025-07-29 Yihua Shao , Haojin He , Sijie Li , Siyu Chen , Xinwei Long , Fanhu Zeng , Yuxuan Fan , Muyang Zhang , Ziyang Yan , Ao Ma , Xiaochen Wang , Hao Tang , Yan Wang , Shuyan Li

Unmanned aerial vehicles (UAVs) are widely applied for purposes of inspection, search, and rescue operations by the virtue of low-cost, large-coverage, real-time, and high-resolution data acquisition capacities. Massive volumes of aerial…

Computer Vision and Pattern Recognition · Computer Science 2022-10-05 Pu Jin , Lichao Mou , Gui-Song Xia , Xiao Xiang Zhu

In this paper, we propose a weakly supervised deep temporal encoding-decoding solution for anomaly detection in surveillance videos using multiple instance learning. The proposed approach uses both abnormal and normal video clips during the…

Computer Vision and Pattern Recognition · Computer Science 2021-01-06 Ammar Mansoor Kamoona , Amirali Khodadadian Gosta , Alireza Bab-Hadiashar , Reza Hoseinnezhad

Progress in video anomaly detection research is currently slowed by small datasets that lack a wide variety of activities as well as flawed evaluation criteria. This paper aims to help move this research effort forward by introducing a…

Computer Vision and Pattern Recognition · Computer Science 2020-01-27 Bharathkumar Ramachandra , Michael Jones

Anomaly detection in videos is a problem that has been studied for more than a decade. This area has piqued the interest of researchers due to its wide applicability. Because of this, there has been a wide array of approaches that have been…

Computer Vision and Pattern Recognition · Computer Science 2020-09-30 Jessie James P. Suarez , Prospero C. Naval
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