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Weakly-supervised Temporal Action Localization (WTAL) has achieved notable success but still suffers from a lack of temporal annotations, leading to a performance and framework gap compared with fully-supervised methods. While recent…

计算机视觉与模式识别 · 计算机科学 2025-04-22 Ziyi Liu , Yangcen Liu

This paper strives for spatio-temporal localization of human actions in videos. In the literature, the consensus is to achieve localization by training on bounding box annotations provided for each frame of each training video. As…

计算机视觉与模式识别 · 计算机科学 2018-10-02 Pascal Mettes , Cees G. M. Snoek

Temporal action localization presents a trade-off between test performance and annotation-time cost. Fully supervised methods achieve good performance with time-consuming boundary annotations. Weakly supervised methods with cheaper…

计算机视觉与模式识别 · 计算机科学 2020-07-06 Xinpeng Ding , Nannan Wang , Xinbo Gao , Jie Li , Xiaoyu Wang , Tongliang Liu

Weakly-supervised action localization aims to recognize and localize action instancese in untrimmed videos with only video-level labels. Most existing models rely on multiple instance learning(MIL), where the predictions of unlabeled…

计算机视觉与模式识别 · 计算机科学 2023-09-27 Guiqin Wang , Peng Zhao , Cong Zhao , Shusen Yang , Jie Cheng , Luziwei Leng , Jianxing Liao , Qinghai Guo

Weakly-supervised temporal action localization aims to recognize and localize action segments in untrimmed videos given only video-level action labels for training. Without the boundary information of action segments, existing methods…

计算机视觉与模式识别 · 计算机科学 2022-03-30 Bo He , Xitong Yang , Le Kang , Zhiyu Cheng , Xin Zhou , Abhinav Shrivastava

Leveraging vast amounts of unlabeled internet video data for embodied AI is currently bottlenecked by the lack of action labels and the presence of action-correlated visual distractors. Although recent latent action policy optimization…

We strive for spatio-temporal localization of actions in videos. The state-of-the-art relies on action proposals at test time and selects the best one with a classifier trained on carefully annotated box annotations. Annotating action boxes…

计算机视觉与模式识别 · 计算机科学 2017-12-14 Pascal Mettes , Jan C. van Gemert , Cees G. M. Snoek

Temporal action segmentation approaches have been very successful recently. However, annotating videos with frame-wise labels to train such models is very expensive and time consuming. While weakly supervised methods trained using only…

计算机视觉与模式识别 · 计算机科学 2021-03-29 Zhe Li , Yazan Abu Farha , Juergen Gall

Weakly-supervised temporal action localization aims to locate action regions and identify action categories in untrimmed videos simultaneously by taking only video-level labels as the supervision. Pseudo label generation is a promising…

计算机视觉与模式识别 · 计算机科学 2023-12-27 Wulian Yun , Mengshi Qi , Chuanming Wang , Huadong Ma

Micro-Action Recognition (MAR) aims to classify subtle human actions in video. However, annotating MAR datasets is particularly challenging due to the subtlety of actions. To this end, we introduce the setting of Semi-Supervised MAR…

计算机视觉与模式识别 · 计算机科学 2025-04-11 Yan Zhang , Lechao Cheng , Yaxiong Wang , Zhun Zhong , Meng Wang

The growing demands of stroke rehabilitation have increased the need for solutions to support autonomous exercising. Virtual coaches can provide real-time exercise feedback from video data, helping patients improve motor function and keep…

图像与视频处理 · 电气工程与系统科学 2025-06-05 Gonçalo Mesquita , Ana Rita Cóias , Artur Dubrawski , Alexandre Bernardino

Temporal action segmentation is a topic of increasing interest, however, annotating each frame in a video is cumbersome and costly. Weakly supervised approaches therefore aim at learning temporal action segmentation from videos that are…

计算机视觉与模式识别 · 计算机科学 2020-04-01 Mohsen Fayyaz , Juergen Gall

Training a real-time gesture recognition model heavily relies on annotated data. However, manual data annotation is costly and demands substantial human effort. In order to address this challenge, we propose a framework that can…

计算机视觉与模式识别 · 计算机科学 2024-10-08 Junxiao Shen , Xuhai Xu , Ran Tan , Amy Karlson , Evan Strasnick

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…

计算机视觉与模式识别 · 计算机科学 2022-03-15 Linjiang Huang , Liang Wang , Hongsheng Li

Temporal action detection (TAD) aims to determine the semantic label and the temporal interval of every action instance in an untrimmed video. It is a fundamental and challenging task in video understanding. Previous methods tackle this…

计算机视觉与模式识别 · 计算机科学 2022-08-12 Xiaolong Liu , Qimeng Wang , Yao Hu , Xu Tang , Shiwei Zhang , Song Bai , Xiang Bai

Weakly-supervised Temporal Action Localization (WSTAL) aims to localize actions in untrimmed videos using only video-level supervision. Latest WSTAL methods introduce pseudo label learning framework to bridge the gap between…

计算机视觉与模式识别 · 计算机科学 2024-07-15 Qianhan Feng , Wenshuo Li , Tong Lin , Xinghao Chen

Weakly supervised temporal action localization aims at learning the instance-level action pattern from the video-level labels, where a significant challenge is action-context confusion. To overcome this challenge, one recent work builds an…

计算机视觉与模式识别 · 计算机科学 2021-11-25 Le Yang , Junwei Han , Tao Zhao , Tianwei Lin , Dingwen Zhang , Jianxin Chen

Driven by the growing need for Oriented Object Detection (OOD), learning from point annotations under a weakly-supervised framework has emerged as a promising alternative to costly and laborious manual labeling. In this paper, we discuss…

计算机视觉与模式识别 · 计算机科学 2026-02-03 Teng Zhang , Ziqian Fan , Mingxin Liu , Xin Zhang , Xudong Lu , Wentong Li , Yue Zhou , Yi Yu , Xiang Li , Junchi Yan , Xue Yang

Semi-supervised Camouflaged Object Detection (SSCOD) aims to reduce reliance on costly pixel-level annotations by leveraging limited annotated data and abundant unlabeled data. However, existing SSCOD methods based on Teacher-Student…

计算机视觉与模式识别 · 计算机科学 2025-08-01 Xihang Hu , Fuming Sun , Jiazhe Liu , Feilong Xu , Xiaoli Zhang

We describe a latent approach that learns to detect actions in long sequences given training videos with only whole-video class labels. Our approach makes use of two innovations to attention-modeling in weakly-supervised learning. First,…

计算机视觉与模式识别 · 计算机科学 2019-08-20 Phuc Xuan Nguyen , Deva Ramanan , Charless C. Fowlkes