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Temporal action detection aims to recognize the action category and determine each action instance's starting and ending time in untrimmed videos. The mixed methods have achieved remarkable performance by seamlessly merging anchor-based and…

Computer Vision and Pattern Recognition · Computer Science 2024-06-10 Zhenying Fang , Jun Yu , Richang Hong

Efficiently modeling spatial-temporal information in videos is crucial for action recognition. To achieve this goal, state-of-the-art methods typically employ the convolution operator and the dense interaction modules such as non-local…

Computer Vision and Pattern Recognition · Computer Science 2022-08-10 Yuan Tian , Yichao Yan , Guangtao Zhai , Guodong Guo , Zhiyong Gao

Video-based person re-identification aims to match a specific pedestrian in surveillance videos across different time and locations. Human attributes and appearance are complementary to each other, both of them contribute to pedestrian…

Computer Vision and Pattern Recognition · Computer Science 2020-09-10 Jiawei Liu , Xierong Zhu , Zheng-Jun Zha

Spatio-temporal contexts are crucial in understanding human actions in videos. Recent state-of-the-art Convolutional Neural Network (ConvNet) based action recognition systems frequently involve 3D spatio-temporal ConvNet filters, chunking…

Computer Vision and Pattern Recognition · Computer Science 2018-05-09 Yunfeng Wang , Wengang Zhou , Qilin Zhang , Xiaotian Zhu , Houqiang Li

Temporal graphs are widespread in real-world applications such as social networks, as well as trade and transportation networks. Predicting dynamic links within these evolving graphs is a key problem. Many memory-based methods use temporal…

Machine Learning · Computer Science 2025-12-16 Xiaohui Zhang , Yanbo Wang , Xiyuan Wang , Muhan Zhang

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

Visual tracking has made significant improvements in the past few decades. Most existing state-of-the-art trackers 1) merely aim for performance in ideal conditions while overlooking the real-world conditions; 2) adopt the…

Computer Vision and Pattern Recognition · Computer Science 2023-08-22 Ziang Cao , Ziyuan Huang , Liang Pan , Shiwei Zhang , Ziwei Liu , Changhong Fu

This technical report presents our solution to the HACS Temporal Action Localization Challenge 2021, Weakly-Supervised Learning Track. The goal of weakly-supervised temporal action localization is to temporally locate and classify action of…

Computer Vision and Pattern Recognition · Computer Science 2022-04-19 Yuanhao Zhai , Le Wang , David Doermann , Junsong Yuan

Space-time video super-resolution (STVSR) aims to increase the spatial and temporal resolutions of low-resolution and low-frame-rate videos. Recently, deformable convolution based methods have achieved promising STVSR performance, but they…

Computer Vision and Pattern Recognition · Computer Science 2021-05-03 Gang Xu , Jun Xu , Zhen Li , Liang Wang , Xing Sun , Ming-Ming Cheng

Accurate traffic flow forecasting is a crucial research topic in transportation management. However, it is a challenging problem due to rapidly changing traffic conditions, high nonlinearity of traffic flow, and complex spatial and temporal…

Machine Learning · Computer Science 2024-06-06 Sanghyun Lee , Chanyoung Park

Temporal action localization in untrimmed videos is an important but difficult task. Difficulties are encountered in the application of existing methods when modeling temporal structures of videos. In the present study, we developed a novel…

Computer Vision and Pattern Recognition · Computer Science 2019-11-05 Yuan Zhou , Hongru Li , Sun-Yuan Kung

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…

Computer Vision and Pattern Recognition · Computer Science 2020-04-01 Mohsen Fayyaz , Juergen Gall

Multivariate time series forecasting is an important machine learning problem across many domains, including predictions of solar plant energy output, electricity consumption, and traffic jam situation. Temporal data arise in these…

Machine Learning · Computer Science 2018-04-20 Guokun Lai , Wei-Cheng Chang , Yiming Yang , Hanxiao Liu

Recognizing human actions from untrimmed videos is an important task in activity understanding, and poses unique challenges in modeling long-range temporal relations. Recent works adopt a predict-and-refine strategy which converts an…

Computer Vision and Pattern Recognition · Computer Science 2023-02-28 Zhichao Liu , Leshan Wang , Desen Zhou , Jian Wang , Songyang Zhang , Yang Bai , Errui Ding , Rui Fan

This thesis explore different approaches using Convolutional and Recurrent Neural Networks to classify and temporally localize activities on videos, furthermore an implementation to achieve it has been proposed. As the first step, features…

Computer Vision and Pattern Recognition · Computer Science 2017-03-06 Alberto Montes , Amaia Salvador , Santiago Pascual , Xavier Giro-i-Nieto

In this paper, we address the challenges in unsupervised video object segmentation (UVOS) by proposing an efficient algorithm, termed MTNet, which concurrently exploits motion and temporal cues. Unlike previous methods that focus solely on…

Computer Vision and Pattern Recognition · Computer Science 2025-01-15 Yunzhi Zhuge , Hongyu Gu , Lu Zhang , Jinqing Qi , Huchuan Lu

Action detection is an essential and challenging task, especially for densely labelled datasets of untrimmed videos. The temporal relation is complex in those datasets, including challenges like composite action, and co-occurring action.…

Computer Vision and Pattern Recognition · Computer Science 2022-03-30 Rui Dai , Srijan Das , Kumara Kahatapitiya , Michael S. Ryoo , Francois Bremond

We present the Temporal Graph Benchmark (TGB), a collection of challenging and diverse benchmark datasets for realistic, reproducible, and robust evaluation of machine learning models on temporal graphs. TGB datasets are of large scale,…

Accurately locating the start and end time of an action in untrimmed videos is a challenging task. One of the important reasons is the boundary of action is not highly distinguishable, and the features around the boundary are difficult to…

Computer Vision and Pattern Recognition · Computer Science 2019-11-21 Yushuai Hu , Yaochu Jin , Runhua Li , Xiangxiang Zhang

Ensuring the safety of vulnerable road users through accurate prediction of pedestrian crossing intention (PCI) plays a crucial role in the context of autonomous and assisted driving. Analyzing the set of observation video frames in…

Computer Vision and Pattern Recognition · Computer Science 2025-04-10 Hongbin Liang , Hezhe Qiao , Wei Huang , Qizhou Wang , Mingsheng Shang , Lin Chen
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