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In this paper, we study an intermediate form of supervision, i.e., single-frame supervision, for temporal action localization (TAL). To obtain the single-frame supervision, the annotators are asked to identify only a single frame within the…

Computer Vision and Pattern Recognition · Computer Science 2020-08-18 Fan Ma , Linchao Zhu , Yi Yang , Shengxin Zha , Gourab Kundu , Matt Feiszli , Zheng Shou

Temporal Action Localization (TAL) aims to detect the start and end timestamps of actions in a video. However, the training of TAL models requires a substantial amount of manually annotated data. Data programming is an efficient method to…

Human-Computer Interaction · Computer Science 2025-05-26 Yuchen He , Jianbing Lv , Liqi Cheng , Lingyu Meng , Dazhen Deng , Yingcai Wu

In this paper, we propose to tackle the challenging few-shot learning (FSL) problem by learning global class representations using both base and novel class training samples. In each training episode, an episodic class mean computed from a…

Computer Vision and Pattern Recognition · Computer Science 2019-08-15 Tiange Luo , Aoxue Li , Tao Xiang , Weiran Huang , Liwei Wang

Weakly supervised temporal action localization is a challenging vision task due to the absence of ground-truth temporal locations of actions in the training videos. With only video-level supervision during training, most existing methods…

Computer Vision and Pattern Recognition · Computer Science 2021-03-26 Ashraful Islam , Chengjiang Long , Richard Radke

Video anomaly detection under video-level labels is currently a challenging task. Previous works have made progresses on discriminating whether a video sequencecontains anomalies. However, most of them fail to accurately localize the…

Computer Vision and Pattern Recognition · Computer Science 2021-04-15 Hui Lv , Chuanwei Zhou , Chunyan Xu , Zhen Cui , Jian Yang

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…

Computer Vision and Pattern Recognition · Computer Science 2021-12-22 Zichen Yang , Jie Qin , Di Huang

Few-shot algorithms aim at learning new tasks provided only a handful of training examples. In this work we investigate few-shot learning in the setting where the data points are sequences of tokens and propose an efficient learning…

Machine Learning · Computer Science 2020-12-18 Lajanugen Logeswaran , Ann Lee , Myle Ott , Honglak Lee , Marc'Aurelio Ranzato , Arthur Szlam

Traditional semantic segmentation tasks require a large number of labels and are difficult to identify unlearned categories. Few-shot semantic segmentation (FSS) aims to use limited labeled support images to identify the segmentation of new…

Computer Vision and Pattern Recognition · Computer Science 2023-09-19 Xianglin Wang , Xiaoliu Luo , Taiping Zhang

Temporal Action Segmentation (TAS) is an essential task in video analysis, aiming to segment and classify continuous frames into distinct action segments. However, the ambiguous boundaries between actions pose a significant challenge for…

Computer Vision and Pattern Recognition · Computer Science 2024-08-06 Shuaibing Wang , Shunli Wang , Mingcheng Li , Dingkang Yang , Haopeng Kuang , Ziyun Qian , Lihua Zhang

Temporal action segmentation in untrimmed procedural videos aims to densely label frames into action classes. These videos inherently exhibit long-tailed distributions, where actions vary widely in frequency and duration. In temporal action…

Computer Vision and Pattern Recognition · Computer Science 2025-03-25 Zhanzhong Pang , Fadime Sener , Shrinivas Ramasubramanian , Angela Yao

Few-shot object detection (FSOD) aims to detect never-seen objects using few examples. This field sees recent improvement owing to the meta-learning techniques by learning how to match between the query image and few-shot class examples,…

Computer Vision and Pattern Recognition · Computer Science 2022-05-10 Guangxing Han , Yicheng He , Shiyuan Huang , Jiawei Ma , Shih-Fu Chang

Few-shot learning is a technique to learn a model with a very small amount of labeled training data by transferring knowledge from relevant tasks. In this paper, we propose a few-shot learning method for wearable sensor based human activity…

Machine Learning · Computer Science 2019-03-26 Siwei Feng , Marco F. Duarte

Few-shot learning aims to handle previously unseen tasks using only a small amount of new training data. In preparing (or meta-training) a few-shot learner, however, massive labeled data are necessary. In the real world, unfortunately,…

Machine Learning · Computer Science 2020-03-19 Jun Seo , Sung Whan Yoon , Jaekyun Moon

Weakly-Supervised Temporal Action Localization (WSTAL) aims to localize actions in untrimmed videos with only video-level labels. Currently, most state-of-the-art WSTAL methods follow a Multi-Instance Learning (MIL) pipeline: producing…

Computer Vision and Pattern Recognition · Computer Science 2022-08-24 Meng Cao , Can Zhang , Long Chen , Mike Zheng Shou , Yuexian Zou

Weakly-supervised temporal action localization (WS-TAL) aims to localize actions in untrimmed videos with only video-level labels. Most existing models follow the "localization by classification" procedure: locate temporal regions…

Computer Vision and Pattern Recognition · Computer Science 2021-07-29 Can Zhang , Meng Cao , Dongming Yang , Jie Chen , Yuexian Zou

Aiming at recognizing the samples from novel categories with few reference samples, few-shot learning (FSL) is a challenging problem. We found that the existing works often build their few-shot model based on the image-level feature by…

Computer Vision and Pattern Recognition · Computer Science 2021-11-09 Junying Huang , Fan Chen , Keze Wang , Liang Lin , Dongyu Zhang

Weakly supervised temporal action localization (WTAL) aims to localize actions in untrimmed videos with only weak supervision information (e.g. video-level labels). Most existing models handle all input videos with a fixed temporal scale.…

Computer Vision and Pattern Recognition · Computer Science 2022-11-22 Weiqi Sun , Rui Su , Qian Yu , Dong Xu

Recently, Transformer-based robotic manipulation methods utilize multi-view spatial representations and language instructions to learn robot motion trajectories by leveraging numerous robot demonstrations. However, the collection of robot…

Robotics · Computer Science 2025-04-23 Mingchen Song , Xiang Deng , Guoqiang Zhong , Qi Lv , Jia Wan , Yinchuan Li , Jianye Hao , Weili Guan

Few-shot object detection (FSOD) has thrived in recent years to learn novel object classes with limited data by transferring knowledge gained on abundant base classes. FSOD approaches commonly assume that both the scarcely provided examples…

Computer Vision and Pattern Recognition · Computer Science 2022-09-20 Karim Guirguis , George Eskandar , Matthias Kayser , Bin Yang , Juergen Beyerer

Due to the lack of temporal annotation, current Weakly-supervised Temporal Action Localization (WTAL) methods are generally stuck into over-complete or incomplete localization. In this paper, we aim to leverage the text information to boost…

Computer Vision and Pattern Recognition · Computer Science 2023-05-02 Guozhang Li , De Cheng , Xinpeng Ding , Nannan Wang , Xiaoyu Wang , Xinbo Gao