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Subtle abnormal events in videos often manifest as weak spatio-temporal cues that are easily overlooked by conventional anomaly detection systems. Existing video anomaly detection approaches typically provide coarse binary anomaly decisions…

Computer Vision and Pattern Recognition · Computer Science 2026-04-01 Jihao Gu , Kun Li , He Wang , Kaan Akşit

Accurate classification of medical images is critical for detecting abnormalities in the gastrointestinal tract, a domain where misclassification can significantly impact patient outcomes. We propose an ensemble-based approach to improve…

Computer Vision and Pattern Recognition · Computer Science 2024-12-31 Ishita Harish , Saurav Mishra , Neha Bhadoria , Rithik Kumar , Madhav Arora , Syed Rameem Zahra , Ankur Gupta

Object detection and object tracking are usually treated as two separate processes. Significant progress has been made for object detection in 2D images using deep learning networks. The usual tracking-by-detection pipeline for object…

Computer Vision and Pattern Recognition · Computer Science 2019-02-06 Chenge Li , Gregory Dobler , Xin Feng , Yao Wang

Anomaly detection in road networks is vital for traffic management and emergency response. However, existing approaches do not directly address multiple anomaly types. We propose a tensor-based spatio-temporal model for detecting multiple…

Physics and Society · Physics 2019-10-31 Ming Xu , Jianping Wu , Haohan Wang , Mengxin Cao

Visual place recognition (VPR) in condition-varying environments is still an open problem. Popular solutions are CNN-based image descriptors, which have been shown to outperform traditional image descriptors based on hand-crafted visual…

Computer Vision and Pattern Recognition · Computer Science 2022-04-18 Hanjing Ye , Weinan Chen , Jingwen Yu , Li He , Yisheng Guan , Hong Zhang

Anomaly detection in surveillance videos has been recently gaining attention. A challenging aspect of high-dimensional applications such as video surveillance is continual learning. While current state-of-the-art deep learning approaches…

Computer Vision and Pattern Recognition · Computer Science 2020-04-20 Keval Doshi , Yasin Yilmaz

In CNN-based object detection methods, region proposal becomes a bottleneck when objects exhibit significant scale variation, occlusion or truncation. In addition, these methods mainly focus on 2D object detection and cannot estimate…

Computer Vision and Pattern Recognition · Computer Science 2017-03-10 Yu Xiang , Wongun Choi , Yuanqing Lin , Silvio Savarese

Human drivers can recognise fast abnormal driving situations to avoid accidents. Similar to humans, automated vehicles are supposed to perform anomaly detection. In this work, we propose the spatio-temporal graph auto-encoder for learning…

Robotics · Computer Science 2021-10-29 Julian Wiederer , Arij Bouazizi , Marco Troina , Ulrich Kressel , Vasileios Belagiannis

Movement specific vehicle classification and counting at traffic intersections is a crucial component for various traffic management activities. In this context, with recent advancements in computer-vision based techniques, cameras have…

Computer Vision and Pattern Recognition · Computer Science 2021-11-18 Udita Jana , Jyoti Prakash Das Karmakar , Pranamesh Chakraborty , Tingting Huang , Dave Ness , Duane Ritcher , Anuj Sharma

Video anomaly detection is to determine whether there are any abnormal events, behaviors or objects in a given video, which enables effective and intelligent public safety management. As video anomaly labeling is both time-consuming and…

Computer Vision and Pattern Recognition · Computer Science 2024-07-08 Yang Wang , Jiaogen Zhou , Jihong Guan

Visual attributes in individual video frames, such as the presence of characteristic objects and scenes, offer substantial information for action recognition in videos. With individual 2D video frame as input, visual attributes extraction…

Computer Vision and Pattern Recognition · Computer Science 2018-05-09 Yunfeng Wang , Wengang Zhou , Qilin Zhang , Houqiang Li

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

Object recognition from live video streams comes with numerous challenges such as the variation in illumination conditions and poses. Convolutional neural networks (CNNs) have been widely used to perform intelligent visual object…

Computer Vision and Pattern Recognition · Computer Science 2021-06-30 Muhammad Usman Yaseen , Ashiq Anjum , Giancarlo Fortino , Antonio Liotta , Amir Hussain

Recent approaches for high accuracy detection and tracking of object categories in video consist of complex multistage solutions that become more cumbersome each year. In this paper we propose a ConvNet architecture that jointly performs…

Computer Vision and Pattern Recognition · Computer Science 2018-03-08 Christoph Feichtenhofer , Axel Pinz , Andrew Zisserman

This project aims to develop a robust video surveillance system, which can segment videos into smaller clips based on the detection of activities. It uses CCTV footage, for example, to record only major events-like the appearance of a…

Computer Vision and Pattern Recognition · Computer Science 2025-02-18 Shahran Rahman Alve

Video Anomaly Detection (VAD) aims to localize abnormal events on the timeline of long-range surveillance videos. Anomaly-scoring-based methods have been prevailing for years but suffer from the high complexity of thresholding and low…

Computer Vision and Pattern Recognition · Computer Science 2024-01-12 Hui Lv , Qianru Sun

In this research we propose a deep learning approach for detecting anomalies in videos using convolutional autoencoder and decoder neural networks on the UCSD dataset.Our method utilizes a convolutional autoencoder to learn the…

Computer Vision and Pattern Recognition · Computer Science 2023-11-09 Gopikrishna Pavuluri , Gayathri Annem

Anomaly detection is a key goal of autonomous surveillance systems that should be able to alert unusual observations. In this paper, we propose a holistic anomaly detection system using deep neural networks for surveillance of critical…

Computer Vision and Pattern Recognition · Computer Science 2020-11-06 Ilker Bozcan , Erdal Kayacan

This paper presents a Convolutional Neural Network (CNN) approach for counting and locating objects in high-density imagery. To the best of our knowledge, this is the first object counting and locating method based on a feature map…

Temporal activity localization in long videos is an important problem. The cost of obtaining frame level label for long Wireless Capsule Endoscopy (WCE) videos is prohibitive. In this paper, we propose an end-to-end temporal abnormality…

Computer Vision and Pattern Recognition · Computer Science 2021-10-19 Sodiq Adewole , Philip Fernandes , James Jablonski , Andrew Copland , Michael Porter , Sana Syed , Donald Brown