Temporal Action Detection

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Overview

Temporal action detection studies how to find and classify action intervals in long, untrimmed videos, supporting tasks such as sports event spotting, surgical phase monitoring, and online alerts. Common approaches use temporal convolutional networks, transformers, or state-space models to combine local motion cues with longer-range context, then predict boundaries and rank candidate events. Research also addresses weak or point-level labels, streaming and efficient inference, and zero-shot or open-vocabulary detection using language and vision-language models; THUMOS14 and ActivityNet-1.3 are common benchmarks. A central challenge is balancing accurate, coherent boundaries and generalization to unseen settings against the cost of dense annotation and computation, while ensuring evaluation reflects event-level performance rather than frame scores alone.

Latest papers

CardsList

41 papers6 papers in the last four weeks, up 50% on the four weeks before. 0.0% of all new papers.

  1. TemPose-TF-ASF: Two-Stage Bidirectional Stroke Context Fusion for Badminton Stroke Classification

    May 4, 2026Tzu-Yu Liu, Duan-Shin LeeSports Video AnalysisVideo Action Recognition

    Institute of Communications Engineering National Tsing Hua University, Hsinchu City, Taiwan · Department of Computer Science National Tsing Hua University, Hsinchu City, Taiwan

  2. Denoise and Align: Diffusion-Driven Foreground Knowledge Prompting for Open-Vocabulary Temporal Action Detection

    Apr 20, 2026Sa Zhu, Wanqian Zhang, Lin Wang +3Cross-Modal AlignmentTemporal Action Detection

    Institute of Information Engineering, Chinese Academy of Sciences, School of Cyber Security, University of Chinese Academy of Sciences, State Key Laboratory of Cyberspace Security Defense, Beijing, China · Institute of Information Engineering, Chinese Academy of Sciences, Beijing, China · Hangzhou Dianzi University, Hangzhou, China +1

  3. LiquidTAD: Efficient Temporal Action Detection via Parallel Liquid-Inspired Temporal Relaxation

    Apr 20, 2026Zepeng Sun, Naichuan Zheng, Hailun Xia +3Liquid Neural NetworksHuman Activity Recognition

  4. From Frames to Events: Rethinking Evaluation in Human-Centric Video Anomaly Detection

    Apr 10, 2026Narges Rashvand, Shanle Yao, Armin Danesh Pazho +2Reference-Based Video Anomaly DetectionVideo Anomaly Detection

    University of North Carolina at Charlotte, Charlotte, NC, USA

  5. Efficient Spatial-Temporal Focal Adapter with SSM for Temporal Action Detection

    Apr 10, 2026Yicheng Qiu, Keiji YanaiTemporal Action DetectionTemporal Action Localization

    Department of Informatics The University of Electro-Communications Chofu, Tokyo, Japan

  6. From Skeletons to Semantics: Design and Deployment of a Hybrid Edge-Based Action Detection System for Public Safety

    Mar 31, 2026Ganen Sethupathy, Lalit Dumka, Jan SchagenVideo SurveillanceTemporal Action Detection

    Sopra Steria Germany, Hamburg, Germany · Sopra Steria India, Noida, India

  7. Decompose and Transfer: CoT-Prompting Enhanced Alignment for Open-Vocabulary Temporal Action Detection

    Mar 25, 2026Sa Zhu, Wanqian Zhang, Lin Wang +4Temporal Action DetectionTemporal Video Understanding

    Institute of Information Engineering, Chinese Academy of Sciences · School of Cyber Security, University of Chinese Academy of Sciences · State Key Laboratory of Cyberspace Security Defense +2

  8. CAKE: Real-time Action Detection via Motion Distillation and Background-aware Contrastive Learning

    Mar 25, 2026Hieu Hoang, Dung Trung Tran, Hong Nguyen +1Temporal Action DetectionHuman Activity Recognition

    Viettel Group, Vietnam · School of Electrical and Electronics Engineering, Hanoi University of Science and Technology, Vietnam · Signal Analysis and Interpretation Lab, University of Southern California, United States

  9. Exploring the Temporal Consistency for Point-Level Weakly-Supervised Temporal Action Localization

    Feb 5, 2026Yunchuan Ma, Laiyun Qing, Guorong Li +3Weakly Supervised LearningTemporal Consistency

    University of Chinese Academy of Sciences, Beijing, 100190, China · Macquarie University

  10. MGCA-Net: Multi-Grained Category-Aware Network for Open-Vocabulary Temporal Action Localization

    Nov 17, 2025Zhenying Fang, Richang HongVideo Action RecognitionTemporal Action Detection

    School of Computer Science and Information Engineering, Hefei University of Technology, 188065, China

  11. Action-Dynamics Modeling and Cross-Temporal Interaction for Online Action Understanding

    Oct 12, 2025Xinyu Yang, Zheheng Jiang, Feixiang Zhou +5Temporal Action DetectionNext-Action Prediction

    School of Computing and Mathematical Sciences, University of Leicester, United Kingdom. · School of Eye and Vision Sciences, University of Liverpool, United Kingdom. · School of Information Science and Engineering, University of Jinan, China. +1