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As a decisive part in the success of Mobility-as-a-Service (MaaS), spatio-temporal predictive modeling for crowd movements is a challenging task particularly considering scenarios where societal events drive mobility behavior deviated from…

Machine Learning · Computer Science 2021-12-17 Zhaonan Wang , Renhe Jiang , Hao Xue , Flora D. Salim , Xuan Song , Ryosuke Shibasaki

The performance of video saliency estimation techniques has achieved significant advances along with the rapid development of Convolutional Neural Networks (CNNs). However, devices like cameras and drones may have limited computational…

Computer Vision and Pattern Recognition · Computer Science 2020-01-08 Jia Li , Kui Fu , Shengwei Zhao , Shiming Ge

Ultrasound video-based breast lesion segmentation provides a valuable assistance in early breast lesion detection and treatment. However, existing works mainly focus on lesion segmentation based on ultrasound breast images which usually can…

Image and Video Processing · Electrical Eng. & Systems 2024-03-19 Zhengzheng Tu , Zigang Zhu , Yayang Duan , Bo Jiang , Qishun Wang , Chaoxue Zhang

Estimating 3D poses from a monocular video is still a challenging task, despite the significant progress that has been made in recent years. Generally, the performance of existing methods drops when the target person is too small/large, or…

Computer Vision and Pattern Recognition · Computer Science 2020-04-27 Yu Cheng , Bo Yang , Bo Wang , Robby T. Tan

Understanding human activity is a crucial aspect of developing intelligent robots, particularly in the domain of human-robot collaboration. Nevertheless, existing systems encounter challenges such as over-segmentation, attributed to errors…

Robotics · Computer Science 2024-10-11 Hao Xing , Darius Burschka

This paper presents a novel spatiotemporal transformer network that introduces several original components to detect actions in untrimmed videos. First, the multi-feature selective semantic attention model calculates the correlations…

Computer Vision and Pattern Recognition · Computer Science 2024-05-15 Matthew Korban , Peter Youngs , Scott T. Acton

Skeleton-based human action recognition has attracted a lot of research attention during the past few years. Recent works attempted to utilize recurrent neural networks to model the temporal dependencies between the 3D positional…

Computer Vision and Pattern Recognition · Computer Science 2017-06-27 Jun Liu , Amir Shahroudy , Dong Xu , Alex C. Kot , Gang Wang

In this paper, we introduce Coarse-Fine Networks, a two-stream architecture which benefits from different abstractions of temporal resolution to learn better video representations for long-term motion. Traditional Video models process…

Computer Vision and Pattern Recognition · Computer Science 2021-04-02 Kumara Kahatapitiya , Michael S. Ryoo

Modeling and recognition of surgical activities poses an interesting research problem. Although a number of recent works studied automatic recognition of surgical activities, generalizability of these works across different tasks and…

Computer Vision and Pattern Recognition · Computer Science 2020-08-17 Duygu Sarikaya , Pierre Jannin

The data-driven approach that learns an optimal representation of vision features like skeleton frames or RGB videos is currently a dominant paradigm for activity recognition. While great improvements have been achieved from existing single…

Computer Vision and Pattern Recognition · Computer Science 2020-04-30 Bruce X. B. Yu , Yan Liu , Keith C. C. Chan

Accurate assessment of patient actions plays a crucial role in healthcare as it contributes significantly to disease progression monitoring and treatment effectiveness. However, traditional approaches to assess patient actions often rely on…

Computer Vision and Pattern Recognition · Computer Science 2025-02-26 Youssef Mourchid , Rim Slama

The target of space-time video super-resolution (STVSR) is to increase both the frame rate (also referred to as the temporal resolution) and the spatial resolution of a given video. Recent approaches solve STVSR using end-to-end deep neural…

Computer Vision and Pattern Recognition · Computer Science 2024-12-25 Zijie Yue , Miaojing Shi

Human actions in video sequences are three-dimensional (3D) spatio-temporal signals characterizing both the visual appearance and motion dynamics of the involved humans and objects. Inspired by the success of convolutional neural networks…

Computer Vision and Pattern Recognition · Computer Science 2015-10-05 Lin Sun , Kui Jia , Dit-Yan Yeung , Bertram E. Shi

For a given video-based Human-Object Interaction scene, modeling the spatio-temporal relationship between humans and objects are the important cue to understand the contextual information presented in the video. With the effective…

Computer Vision and Pattern Recognition · Computer Science 2021-08-20 Ning Wang , Guangming Zhu , Liang Zhang , Peiyi Shen , Hongsheng Li , Cong Hua

The goal of fine-grained action recognition is to successfully discriminate between action categories with subtle differences. To tackle this, we derive inspiration from the human visual system which contains specialized regions in the…

Computer Vision and Pattern Recognition · Computer Science 2022-09-07 Tianjiao Li , Lin Geng Foo , Qiuhong Ke , Hossein Rahmani , Anran Wang , Jinghua Wang , Jun Liu

Simultaneous modeling of the spatio-temporal variation patterns of brain functional network from 4D fMRI data has been an important yet challenging problem for the field of cognitive neuroscience and medical image analysis. Inspired by the…

Computer Vision and Pattern Recognition · Computer Science 2021-03-24 Yu Zhao , Xiang Li , Wei Zhang , Shijie Zhao , Milad Makkie , Mo Zhang , Quanzheng Li , Tianming Liu

Fusion is critical for a two-stream network. In this paper, we propose a novel temporal fusion (TF) module to fuse the two-stream joints' information to predict human motion, including a temporal concatenation and a reinforcement trajectory…

Computer Vision and Pattern Recognition · Computer Science 2021-04-13 Jin Tang , Jin Zhang , Jianqin Yin

Temporal modeling and spatio-temporal collaboration are pivotal techniques for video-based human pose estimation. Most state-of-the-art methods adopt optical flow or temporal difference, learning local visual content correspondence across…

Computer Vision and Pattern Recognition · Computer Science 2025-02-18 Runyang Feng , Haoming Chen

In action recognition, although the combination of spatio-temporal videos and skeleton features can improve the recognition performance, a separate model and balancing feature representation for cross-modal data are required. To solve these…

Computer Vision and Pattern Recognition · Computer Science 2022-10-17 Dasom Ahn , Sangwon Kim , Hyunsu Hong , Byoung Chul Ko

Existing multimodal-based human action recognition approaches are computationally intensive, limiting their deployment in real-time applications. In this work, we present a novel and efficient pose-driven attention-guided multimodal network…

Computer Vision and Pattern Recognition · Computer Science 2025-03-21 Ahmed Abdelkawy , Asem Ali , Aly Farag