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Temporal Action Localization (TAL) in untrimmed video is important for many applications. But it is very expensive to annotate the segment-level ground truth (action class and temporal boundary). This raises the interest of addressing TAL…

Computer Vision and Pattern Recognition · Computer Science 2018-12-18 Zheng Shou , Hang Gao , Lei Zhang , Kazuyuki Miyazawa , Shih-Fu Chang

In this study, we introduce DeepLocalization, an innovative framework devised for the real-time localization of actions tailored explicitly for monitoring driver behavior. Utilizing the power of advanced deep learning methodologies, our…

Computer Vision and Pattern Recognition · Computer Science 2025-06-12 Mohammed Shaiqur Rahman , Ibne Farabi Shihab , Lynna Chu , Anuj Sharma

Weakly supervised temporal action localization aims to localize temporal boundaries of actions and simultaneously identify their categories with only video-level category labels. Many existing methods seek to generate pseudo labels for…

Computer Vision and Pattern Recognition · Computer Science 2022-03-15 Linjiang Huang , Liang Wang , Hongsheng Li

LiDAR-based localization and mapping is one of the core components in many modern robotic systems due to the direct integration of range and geometry, allowing for precise motion estimation and generation of high quality maps in real-time.…

Robotics · Computer Science 2022-08-02 Julian Nubert , Etienne Walther , Shehryar Khattak , Marco Hutter

Dynamic graphs serve as a generic abstraction and description of the evolutionary behaviors of various complex systems (e.g., social networks and communication networks). Temporal link prediction (TLP) is a classic yet challenging inference…

Social and Information Networks · Computer Science 2023-06-30 Meng Qin , Dit-Yan Yeung

Most of the current action localization methods follow an anchor-based pipeline: depicting action instances by pre-defined anchors, learning to select the anchors closest to the ground truth, and predicting the confidence of anchors with…

Computer Vision and Pattern Recognition · Computer Science 2020-08-25 Le Yang , Houwen Peng , Dingwen Zhang , Jianlong Fu , Junwei Han

Temporal action detection in long videos is an important problem. State-of-the-art methods address this problem by applying action classifiers on sliding windows. Although sliding windows may contain an identifiable portion of the actions,…

Computer Vision and Pattern Recognition · Computer Science 2017-05-04 Jiyang Gao , Zhenheng Yang , Ram Nevatia

The constrained local model (CLM) proposes a paradigm that the locations of a set of local landmark detectors are constrained to lie in a subspace, spanned by a shape point distribution model (PDM). Fitting the model to an object involves…

Computer Vision and Pattern Recognition · Computer Science 2016-12-01 Hailiang Li , Kin-Man Lam , Man-Yau Chiu , Kangheng Wu , Zhibin Lei

Temporal action detection aims at not only recognizing action category but also detecting start time and end time for each action instance in an untrimmed video. The key challenge of this task is to accurately classify the action and…

Computer Vision and Pattern Recognition · Computer Science 2018-10-22 Wen Wang , Yongjian Wu , Haijun Liu , Shiguang Wang , Jian Cheng

This paper targets the task of language-based video moment localization. The language-based setting of this task allows for an open set of target activities, resulting in a large variation of the temporal lengths of video moments. Most…

Computer Vision and Pattern Recognition · Computer Science 2022-03-04 Qi Zheng , Jianfeng Dong , Xiaoye Qu , Xun Yang , Yabing Wang , Pan Zhou , Baolong Liu , Xun Wang

Dynamic Link Prediction (DLP) addresses the prediction of future links in evolving networks. However, accurately portraying the performance of DLP algorithms poses challenges that might impede progress in the field. Importantly, common…

Social and Information Networks · Computer Science 2024-05-28 Raphaël Romero , Maarten Buyl , Tijl De Bie , Jefrey Lijffijt

Transformer networks are effective at modeling long-range contextual information and have recently demonstrated exemplary performance in the natural language processing domain. Conventionally, the temporal action proposal generation (TAPG)…

Computer Vision and Pattern Recognition · Computer Science 2021-05-26 Lining Wang , Haosen Yang , Wenhao Wu , Hongxun Yao , Hujie Huang

This technical report analyzes a temporal action localization method we used in the HACS competition which is hosted in Activitynet Challenge 2020.The goal of our task is to locate the start time and end time of the action in the untrimmed…

Computer Vision and Pattern Recognition · Computer Science 2020-06-16 Zhiwu Qing , Xiang Wang , Yongpeng Sang , Changxin Gao , Shiwei Zhang , Nong Sang

Temporal action localization is an important and challenging task that aims to locate temporal regions in real-world untrimmed videos where actions occur and recognize their classes. It is widely acknowledged that video context is a…

Computer Vision and Pattern Recognition · Computer Science 2021-03-10 Xin Qin , Hanbin Zhao , Guangchen Lin , Hao Zeng , Songcen Xu , Xi Li

Online action detection is a task with the aim of identifying ongoing actions from streaming videos without any side information or access to future frames. Recent methods proposed to aggregate fixed temporal ranges of invisible but…

Computer Vision and Pattern Recognition · Computer Science 2020-11-17 Sanqing Qu , Guang Chen , Dan Xu , Jinhu Dong , Fan Lu , Alois Knoll

We address the problem of temporal action localization in videos. We pose action localization as a structured prediction over arbitrary-length temporal windows, where each window is scored as the sum of frame-wise classification scores.…

Computer Vision and Pattern Recognition · Computer Science 2017-04-18 Zehuan Yuan , Jonathan C. Stroud , Tong Lu , Jia Deng

Temporal action proposal generation (TAPG) aims to estimate temporal intervals of actions in untrimmed videos, which is a challenging yet plays an important role in many tasks of video analysis and understanding. Despite the great…

Computer Vision and Pattern Recognition · Computer Science 2022-03-18 Khoa Vo , Kashu Yamazaki , Sang Truong , Minh-Triet Tran , Akihiro Sugimoto , Ngan Le

Weakly supervised temporal action localization (WTAL) aims to detect action instances in untrimmed videos using only video-level annotations. Since many existing works optimize WTAL models based on action classification labels, they…

Computer Vision and Pattern Recognition · Computer Science 2024-08-13 Geuntaek Lim , Hyunwoo Kim , Joonsoo Kim , Yukyung Choi

Direct alignment from preferences (DAP) has emerged as a promising paradigm for aligning large language models (LLMs) to human desiderata from pre-collected, offline preference datasets. While recent studies indicate that existing offline…

Machine Learning · Computer Science 2024-10-23 Wenda Xu , Jiachen Li , William Yang Wang , Lei Li

In this study, we delve into the Thresholding Linear Bandit (TLB) problem, a nuanced domain within stochastic Multi-Armed Bandit (MAB) problems, focusing on maximizing decision accuracy against a linearly defined threshold under resource…

Machine Learning · Computer Science 2024-03-12 Yun-Ang Wu , Yun-Da Tsai , Shou-De Lin