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Temporal action detection (TAD) is a fundamental video understanding task that aims to identify human actions and localize their temporal boundaries in videos. Although this field has achieved remarkable progress in recent years, further…

With the rapid development of deep learning algorithms, action recognition in video has achieved many important research results. One issue in action recognition, Zero-Shot Action Recognition (ZSAR), has recently attracted considerable…

计算机视觉与模式识别 · 计算机科学 2020-04-24 Dong Cao , Lisha Xu , HaiBo Chen

We propose a novel architecture for object classification, called Self-Attention Capsule Networks (SACN). SACN is the first model that incorporates the Self-Attention mechanism as an integral layer within the Capsule Network (CapsNet).…

计算机视觉与模式识别 · 计算机科学 2019-11-20 Assaf Hoogi , Brian Wilcox , Yachee Gupta , Daniel L. Rubin

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…

计算机视觉与模式识别 · 计算机科学 2024-11-05 Shimin Chen , Wei Li , Jianyang Gu , Chen Chen , Yandong Guo

This paper proposes a novel multi-modal transformer network for detecting actions in untrimmed videos. To enrich the action features, our transformer network utilizes a new multi-modal attention mechanism that computes the correlations…

计算机视觉与模式识别 · 计算机科学 2023-06-01 Matthew Korban , Scott T. Acton , Peter Youngs

Training temporal action detection in videos requires large amounts of labeled data, yet such annotation is expensive to collect. Incorporating unlabeled or weakly-labeled data to train action detection model could help reduce annotation…

计算机视觉与模式识别 · 计算机科学 2021-02-19 Baifeng Shi , Qi Dai , Judy Hoffman , Kate Saenko , Trevor Darrell , Huijuan Xu

Contextual information plays an important role in action recognition. Local operations have difficulty to model the relation between two elements with a long-distance interval. However, directly modeling the contextual information between…

计算机视觉与模式识别 · 计算机科学 2021-04-07 Congqi Cao , Yue Lu , Yifan Zhang , Dongmei Jiang , Yanning Zhang

Deep learning has been demonstrated to achieve excellent results for image classification and object detection. However, the impact of deep learning on video analysis (e.g. action detection and recognition) has been limited due to…

计算机视觉与模式识别 · 计算机科学 2017-08-03 Rui Hou , Chen Chen , Mubarak Shah

Temporal sentence grounding (TSG) aims to localize the temporal segment which is semantically aligned with a natural language query in an untrimmed video.Most existing methods extract frame-grained features or object-grained features by 3D…

计算机视觉与模式识别 · 计算机科学 2023-02-22 Zeyu Xiong , Daizong Liu , Pan Zhou , Jiahao Zhu

Video Analytics Software as a Service (VA SaaS) has been rapidly growing in recent years. VA SaaS is typically accessed by users using a lightweight client. Because the transmission bandwidth between the client and cloud is usually limited…

计算机视觉与模式识别 · 计算机科学 2018-08-16 Zhaoyang Zhang , Zhanghui Kuang , Ping Luo , Litong Feng , Wei Zhang

Literature on self-assessment in machine learning mainly focuses on the production of well-calibrated algorithms through consensus frameworks i.e. calibration is seen as a problem. Yet, we observe that learning to be properly confident…

机器学习 · 计算机科学 2020-11-16 Guillaume Vaudaux-Ruth , Adrien Chan-Hon-Tong , Catherine Achard

Crowd counting plays a vital role in public safety, traffic regulation, and smart city management. However, despite the impressive progress achieved by CNN- and Transformer-based models, their performance often deteriorates when applied…

计算机视觉与模式识别 · 计算机科学 2026-02-03 Yuehai Chen

Weakly-supervised temporal action localization aims to localize action instances temporal boundary and identify the corresponding action category with only video-level labels. Traditional methods mainly focus on foreground and background…

计算机视觉与模式识别 · 计算机科学 2021-04-08 Sanqing Qu , Guang Chen , Zhijun Li , Lijun Zhang , Fan Lu , Alois Knoll

Action recognition is an important and challenging problem in video analysis. Although the past decade has witnessed progress in action recognition with the development of deep learning, such process has been slow in competitive sports…

计算机视觉与模式识别 · 计算机科学 2020-02-11 Shenlan Liu , Xiang Liu , Gao Huang , Lin Feng , Lianyu Hu , Dong Jiang , Aibin Zhang , Yang Liu , Hong Qiao

Inspired by recent advances in neural machine translation, that jointly align and translate using encoder-decoder networks equipped with attention, we propose an attentionbased LSTM model for human activity recognition. Our model jointly…

计算机视觉与模式识别 · 计算机科学 2017-09-01 Atousa Torabi , Leonid Sigal

Weakly-supervised temporal action localization (WTAL) in untrimmed videos has emerged as a practical but challenging task since only video-level labels are available. Existing approaches typically leverage off-the-shelf segment-level…

计算机视觉与模式识别 · 计算机科学 2021-12-22 Zichen Yang , Jie Qin , Di Huang

Controllable video generation has emerged as a versatile tool for autonomous driving, enabling realistic synthesis of traffic scenarios. However, existing methods depend on control signals at inference time to guide the generative model…

计算机视觉与模式识别 · 计算机科学 2026-02-06 Mirlan Karimov , Teodora Spasojevic , Markus Braun , Julian Wiederer , Vasileios Belagiannis , Marc Pollefeys

Most GCN-based methods model interacting individuals as independent graphs, neglecting their inherent inter-dependencies. Although recent approaches utilize predefined interaction adjacency matrices to integrate participants, these matrices…

计算机视觉与模式识别 · 计算机科学 2025-08-14 Chen Pang , Xuequan Lu , Qianyu Zhou , Lei Lyu

We present a system for concurrent activity recognition. To extract features associated with different activities, we propose a feature-to-activity attention that maps the extracted global features to sub-features associated with individual…

计算机视觉与模式识别 · 计算机科学 2018-12-10 Yanyi Zhang , Xinyu Li , Kaixiang Huang , Yehan Wang , Shuhong Chen , Ivan Marsic

Recent advances in computer vision have made it possible to automatically assess from videos the manipulation skills of humans in performing a task, which breeds many important applications in domains such as health rehabilitation and…

计算机视觉与模式识别 · 计算机科学 2019-04-11 Zhenqiang Li , Yifei Huang , Minjie Cai , Yoichi Sato