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Temporal action localization (TAL) is a fundamental yet challenging task in video understanding. Existing TAL methods rely on pre-training a video encoder through action classification supervision. This results in a task discrepancy problem…

Computer Vision and Pattern Recognition · Computer Science 2021-11-01 Mengmeng Xu , Juan-Manuel Perez-Rua , Xiatian Zhu , Bernard Ghanem , Brais Martinez

An integral part of video analysis and surveillance is temporal activity detection, which means to simultaneously recognize and localize activities in long untrimmed videos. Currently, the most effective methods of temporal activity…

Computer Vision and Pattern Recognition · Computer Science 2020-03-13 Lingling Zhang , Xiaojun Chang , Jun Liu , Minnan Luo , Sen Wang , Zongyuan Ge , Alexander Hauptmann

Temporal action detection (TAD) aims to identify and localize action instances in untrimmed videos, which is essential for various video understanding tasks. However, recent improvements in model performance, driven by larger feature…

Computer Vision and Pattern Recognition · Computer Science 2025-03-24 Xiaoyong Chen , Yong Guo , Jiaming Liang , Sitong Zhuang , Runhao Zeng , Xiping Hu

Temporal Action Detection (TAD) is an essential and challenging topic in video understanding, aiming to localize the temporal segments containing human action instances and predict the action categories. The previous works greatly rely upon…

Computer Vision and Pattern Recognition · Computer Science 2021-09-21 Jiannan Wu , Peize Sun , Shoufa Chen , Jiewen Yang , Zihao Qi , Lan Ma , Ping Luo

Detecting anomalies in images is an important task, especially in real-time computer vision applications. In this work, we focus on computational efficiency and propose a lightweight feature extractor that processes an image in less than a…

Computer Vision and Pattern Recognition · Computer Science 2024-02-09 Kilian Batzner , Lars Heckler , Rebecca König

As a fundamental task in long-form video understanding, temporal action detection (TAD) aims to capture inherent temporal relations in untrimmed videos and identify candidate actions with precise boundaries. Over the years, various…

Computer Vision and Pattern Recognition · Computer Science 2024-07-29 Shuming Liu , Lin Sui , Chen-Lin Zhang , Fangzhou Mu , Chen Zhao , Bernard Ghanem

Traditional temporal action detection (TAD) usually handles untrimmed videos with small number of action instances from a single label (e.g., ActivityNet, THUMOS). However, this setting might be unrealistic as different classes of actions…

Computer Vision and Pattern Recognition · Computer Science 2023-03-22 Jing Tan , Xiaotong Zhao , Xintian Shi , Bin Kang , Limin Wang

Video action detection (spatio-temporal action localization) is usually the starting point for human-centric intelligent analysis of videos nowadays. It has high practical impacts for many applications across robotics, security, healthcare,…

Computer Vision and Pattern Recognition · Computer Science 2022-11-01 Xin Hu , Zhenyu Wu , Hao-Yu Miao , Siqi Fan , Taiyu Long , Zhenyu Hu , Pengcheng Pi , Yi Wu , Zhou Ren , Zhangyang Wang , Gang Hua

Temporal action detection (TAD) aims to locate and recognize the actions in an untrimmed video. Anchor-free methods have made remarkable progress which mainly formulate TAD into two tasks: classification and localization using two separate…

Computer Vision and Pattern Recognition · Computer Science 2022-11-22 Junshan Hu , Chaoxu guo , Liansheng Zhuang , Biao Wang , Tiezheng Ge , Yuning Jiang , Houqiang Li

In the task of temporal action localization of ActivityNet-1.3 datasets, we propose to locate the temporal boundaries of each action and predict action class in untrimmed videos. We first apply VideoSwinTransformer as feature extractor to…

Computer Vision and Pattern Recognition · Computer Science 2024-11-05 Shimin Chen , Wei Li , Jianyang Gu , Chen Chen , Yandong Guo

Most high-level computer vision tasks rely on low-level image operations as their initial processes. Operations such as edge detection, image enhancement, and super-resolution, provide the foundations for higher level image analysis. In…

Computer Vision and Pattern Recognition · Computer Science 2023-08-15 Xavier Soria , Yachuan Li , Mohammad Rouhani , Angel D. Sappa

Most recent approaches for action recognition from video leverage deep architectures to encode the video clip into a fixed length representation vector that is then used for classification. For this to be successful, the network must be…

Computer Vision and Pattern Recognition · Computer Science 2018-08-30 Swathikiran Sudhakaran , Oswald Lanz

Edge intelligence autonomous driving (EIAD) offers computing resources in autonomous vehicles for training deep neural networks. However, wireless channels between the edge server and the autonomous vehicles are time-varying due to the…

Signal Processing · Electrical Eng. & Systems 2022-12-08 Xinrao Li , Tong Zhang , Shuai Wang , Guangxu Zhu , Rui Wang , Tsung-Hui Chang

Interpretation and understanding of video presents a challenging computer vision task in numerous fields - e.g. autonomous driving and sports analytics. Existing approaches to interpreting the actions taking place within a video clip are…

Computer Vision and Pattern Recognition · Computer Science 2023-10-31 Salman Khan , Izzeddin Teeti , Andrew Bradley , Mohamed Elhoseiny , Fabio Cuzzolin

Temporal action detection is a very important yet challenging problem, since videos in real applications are usually long, untrimmed and contain multiple action instances. This problem requires not only recognizing action categories but…

Computer Vision and Pattern Recognition · Computer Science 2017-10-18 Tianwei Lin , Xu Zhao , Zheng Shou

Existing multimodal-based human action recognition approaches are computationally intensive, limiting their deployment in real-time applications. In this work, we present a novel and efficient pose-driven attention-guided multimodal network…

Computer Vision and Pattern Recognition · Computer Science 2025-03-21 Ahmed Abdelkawy , Asem Ali , Aly Farag

Recent works have shown that the computational efficiency of video recognition can be significantly improved by reducing the spatial redundancy. As a representative work, the adaptive focus method (AdaFocus) has achieved a favorable…

Computer Vision and Pattern Recognition · Computer Science 2022-04-13 Yulin Wang , Yang Yue , Yuanze Lin , Haojun Jiang , Zihang Lai , Victor Kulikov , Nikita Orlov , Humphrey Shi , Gao Huang

As robotic systems execute increasingly difficult task sequences, so does the number of ways in which they can fail. Video Anomaly Detection (VAD) frameworks typically focus on singular, low-level kinematic or action failures, struggling to…

Robotics · Computer Science 2026-03-11 Nerea Gallego , Fernando Salanova , Claudio Mannarano , Cristian Mahulea , Eduardo Montijano

Training on edge devices poses several challenges as these devices are generally resource-constrained, especially in terms of power. State-of-the-art techniques at the device level reduce the GPU frequency to enforce power constraints,…

Machine Learning · Computer Science 2025-02-26 Mohamed Aboelenien Ahmed , Kilian Pfeiffer , Heba Khdr , Osama Abboud , Ramin Khalili , Jörg Henkel

Temporal Action Detection (TAD) aims to identify and localize actions by determining their starting and ending frames within untrimmed videos. Recent Structured State-Space Models such as Mamba have demonstrated potential in TAD due to…

Computer Vision and Pattern Recognition · Computer Science 2026-03-06 Hui Lu , Yi Yu , Shijian Lu , Deepu Rajan , Boon Poh Ng , Alex C. Kot , Xudong Jiang