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Temporal Action Localization (TAL) task which is to predict the start and end of each action in a video along with the class label of the action has numerous applications in the real world. But due to the complexity of this task, acceptable…

Computer Vision and Pattern Recognition · Computer Science 2022-05-26 Hassan Keshvarikhojasteh , Hoda Mohammadzade , Hamid Behroozi

Test-Time Optimization enables models to adapt to new data during inference by updating parameters on-the-fly. Recent advances in Vision-Language Models (VLMs) have explored learning prompts at test time to improve performance in downstream…

Computer Vision and Pattern Recognition · Computer Science 2025-07-29 Dhruv Sarkar , Aprameyo Chakrabartty , Bibhudatta Bhanja

Effectively tackling the problem of temporal action localization (TAL) necessitates a visual representation that jointly pursues two confounding goals, i.e., fine-grained discrimination for temporal localization and sufficient visual…

Computer Vision and Pattern Recognition · Computer Science 2021-08-10 Zixin Zhu , Wei Tang , Le Wang , Nanning Zheng , Gang Hua

Spatio-temporal action localization is an important problem in computer vision that involves detecting where and when activities occur, and therefore requires modeling of both spatial and temporal features. This problem is typically…

Computer Vision and Pattern Recognition · Computer Science 2020-10-20 Nakul Agarwal , Yi-Ting Chen , Behzad Dariush , Ming-Hsuan Yang

We present our solution to the BinEgo-360 Challenge at ICCV 2025, which focuses on temporal action localization (TAL) in multi-perspective and multi-modal video settings. The challenge provides a dataset containing panoramic, third-person,…

Computer Vision and Pattern Recognition · Computer Science 2025-12-15 Anh-Kiet Duong , Petra Gomez-Krämer

The world we see is ever-changing and it always changes with people, things, and the environment. Domain is referred to as the state of the world at a certain moment. A research problem is characterized as transfer adaptation learning (TAL)…

Computer Vision and Pattern Recognition · Computer Science 2020-11-24 Lei Zhang , Xinbo Gao

Online temporal action localization (On-TAL) is the task of identifying multiple action instances given a streaming video. Since existing methods take as input only a video segment of fixed size per iteration, they are limited in…

Computer Vision and Pattern Recognition · Computer Science 2024-08-07 Youngkil Song , Dongkeun Kim , Minsu Cho , Suha Kwak

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

Understanding a person's behavior from their 3D motion is a fundamental problem in computer vision with many applications. An important component of this problem is 3D Temporal Action Localization (3D-TAL), which involves recognizing what…

Computer Vision and Pattern Recognition · Computer Science 2022-03-22 Jiankai Sun , Bolei Zhou , Michael J. Black , Arjun Chandrasekaran

Procedural activity videos often exhibit a long-tailed action distribution due to varying action frequencies and durations. However, state-of-the-art temporal action segmentation methods overlook the long tail and fail to recognize tail…

Computer Vision and Pattern Recognition · Computer Science 2024-08-20 Zhanzhong Pang , Fadime Sener , Shrinivas Ramasubramanian , Angela Yao

Weakly-supervised temporal action localization (WTAL) is a practical yet challenging task. Due to large-scale datasets, most existing methods use a network pretrained in other datasets to extract features, which are not suitable enough for…

Computer Vision and Pattern Recognition · Computer Science 2023-08-08 Xiaojun Tang , Junsong Fan , Chuanchen Luo , Zhaoxiang Zhang , Man Zhang , Zongyuan Yang

Data quantity and quality are crucial factors for data-driven learning methods. In some target problem domains, there are not many data samples available, which could significantly hinder the learning process. While data from similar…

Machine Learning · Computer Science 2021-09-22 Shichao Xu , Lixu Wang , Yixuan Wang , Qi Zhu

Enabling computational systems with the ability to localize actions in video-based content has manifold applications. Traditionally, such a problem is approached in a fully-supervised setting where video-clips with complete frame-by-frame…

Computer Vision and Pattern Recognition · Computer Science 2019-05-07 Kurt Degiorgio , Fabio Cuzzolin

Weakly-supervised temporal action localization aims to learn detecting temporal intervals of action classes with only video-level labels. To this end, it is crucial to separate frames of action classes from the background frames (i.e.,…

Computer Vision and Pattern Recognition · Computer Science 2020-12-18 Pilhyeon Lee , Jinglu Wang , Yan Lu , Hyeran Byun

We target at the task of weakly-supervised action localization (WSAL), where only video-level action labels are available during model training. Despite the recent progress, existing methods mainly embrace a localization-by-classification…

Computer Vision and Pattern Recognition · Computer Science 2022-04-01 Junyu Gao , Mengyuan Chen , Changsheng Xu

Weakly-supervised temporal action localization (WTAL) learns to detect and classify action instances with only category labels. Most methods widely adopt the off-the-shelf Classification-Based Pre-training (CBP) to generate video features…

Computer Vision and Pattern Recognition · Computer Science 2022-12-20 Chen Ju , Kunhao Zheng , Jinxiang Liu , Peisen Zhao , Ya Zhang , Jianlong Chang , Yanfeng Wang , Qi Tian

Weakly-supervised temporal action localization aims to localize actions in untrimmed videos with only video-level action category labels. Most of previous methods ignore the incompleteness issue of Class Activation Sequences (CAS),…

Computer Vision and Pattern Recognition · Computer Science 2021-04-07 Chen Ju , Peisen Zhao , Siheng Chen , Ya Zhang , Xiaoyun Zhang , Qi Tian

Point-supervised Temporal Action Localization (PSTAL) is an emerging research direction for label-efficient learning. However, current methods mainly focus on optimizing the network either at the snippet-level or the instance-level,…

Computer Vision and Pattern Recognition · Computer Science 2024-01-30 Huaxin Zhang , Xiang Wang , Xiaohao Xu , Zhiwu Qing , Changxin Gao , Nong Sang

Weakly supervised object localization (WSOL) is a challenging task aiming to localize objects with only image-level supervision. Recent works apply visual transformer to WSOL and achieve significant success by exploiting the long-range…

Computer Vision and Pattern Recognition · Computer Science 2023-08-10 Pingyu Wu , Wei Zhai , Yang Cao , Jiebo Luo , Zheng-Jun Zha

Despite the recent progress in video understanding and the continuous rate of improvement in temporal action localization throughout the years, it is still unclear how far (or close?) we are to solving the problem. To this end, we introduce…

Computer Vision and Pattern Recognition · Computer Science 2018-07-30 Humam Alwassel , Fabian Caba Heilbron , Victor Escorcia , Bernard Ghanem