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Traditional approaches in unsupervised or self supervised learning for skeleton-based action classification have concentrated predominantly on the dynamic aspects of skeletal sequences. Yet, the intricate interaction between the moving and…

计算机视觉与模式识别 · 计算机科学 2025-05-30 Shanaka Ramesh Gunasekara , Wanqing Li , Philip Ogunbona , Jack Yang

Graph Convolutional Networks (GCNs), which model skeleton data as graphs, have obtained remarkable performance for skeleton-based action recognition. Particularly, the temporal dynamic of skeleton sequence conveys significant information in…

计算机视觉与模式识别 · 计算机科学 2020-12-17 Jianan Li , Xuemei Xie , Zhifu Zhao , Yuhan Cao , Qingzhe Pan , Guangming Shi

Previous methods for skeleton-based gesture recognition mostly arrange the skeleton sequence into a pseudo picture or spatial-temporal graph and apply deep Convolutional Neural Network (CNN) or Graph Convolutional Network (GCN) for feature…

计算机视觉与模式识别 · 计算机科学 2021-06-28 Jianbo Liu , Ying Wang , Shiming Xiang , Chunhong Pan

The growing interest in Temporal Graph Neural Networks (TGNNs) stems from their ability to model complex dynamics and deliver superior performance. However, TGNNs encounter fundamental challenges in capturing long-term dependencies and…

机器学习 · 计算机科学 2026-05-26 Hongjiang Chen , Pengfei Jiao , Ming Du , Xuan Guo , Zhidong Zhao , Di Jin , Xiao Liu

Spatio-temporal representational learning has been widely adopted in various fields such as action recognition, video object segmentation, and action anticipation. Previous spatio-temporal representational learning approaches primarily…

计算机视觉与模式识别 · 计算机科学 2021-11-01 Xuefan Zha , Wentao Zhu , Tingxun Lv , Sen Yang , Ji Liu

In recent years, graph convolutional networks (GCNs) play an increasingly critical role in skeleton-based human action recognition. However, most GCN-based methods still have two main limitations: 1) They only consider the motion…

计算机视觉与模式识别 · 计算机科学 2022-02-10 Zhigang Tu , Jiaxu Zhang , Hongyan Li , Yujin Chen , Junsong Yuan

As a core technology of Intelligent Transportation System (ITS), traffic flow prediction has a wide range of applications. Traffic flow data are spatial-temporal, which are not only correlated to spatial locations in road networks, but also…

人工智能 · 计算机科学 2024-12-24 Xiao Xu , Lei Zhang , Bailong Liu , Zhizhen Liang , Xuefei Zhang

Action recognition with skeleton data has recently attracted much attention in computer vision. Previous studies are mostly based on fixed skeleton graphs, only capturing local physical dependencies among joints, which may miss implicit…

计算机视觉与模式识别 · 计算机科学 2019-04-30 Maosen Li , Siheng Chen , Xu Chen , Ya Zhang , Yanfeng Wang , Qi Tian

Skeleton-based action recognition task is entangled with complex spatio-temporal variations of skeleton joints, and remains challenging for Recurrent Neural Networks (RNNs). In this work, we propose a temporal-then-spatial recalibration…

计算机视觉与模式识别 · 计算机科学 2018-05-04 Chunyu Xie , Ce Li , Baochang Zhang , Chen Chen , Jungong Han , Changqing Zou , Jianzhuang Liu

Convolutional neural networks and attention mechanisms have greatly benefited remote sensing change detection (RSCD) because of their outstanding discriminative ability. Existent RSCD methods often follow a paradigm of using a…

计算机视觉与模式识别 · 计算机科学 2024-12-24 Xiaowen Ma , Zhenkai Wu , Mengting Ma , Mengjiao Zhao , Fan Yang , Zhenhong Du , Wei Zhang

Despite the success of deep learning for static image understanding, it remains unclear what are the most effective network architectures for the spatial-temporal modeling in videos. In this paper, in contrast to the existing CNN+RNN or…

计算机视觉与模式识别 · 计算机科学 2018-12-12 Dongliang He , Zhichao Zhou , Chuang Gan , Fu Li , Xiao Liu , Yandong Li , Limin Wang , Shilei Wen

While transformers have shown great potential on video recognition with their strong capability of capturing long-range dependencies, they often suffer high computational costs induced by the self-attention to the huge number of 3D tokens.…

计算机视觉与模式识别 · 计算机科学 2022-11-23 Yuxuan Liang , Pan Zhou , Roger Zimmermann , Shuicheng Yan

This paper extends the Spatial-Temporal Graph Convolutional Network (ST-GCN) for skeleton-based action recognition by introducing two novel modules, namely, the Graph Vertex Feature Encoder (GVFE) and the Dilated Hierarchical Temporal…

计算机视觉与模式识别 · 计算机科学 2019-12-23 Konstantinos Papadopoulos , Enjie Ghorbel , Djamila Aouada , Björn Ottersten

Many existing methods that use functional magnetic resonance imaging (fMRI) classify brain disorders, such as autism spectrum disorder (ASD) and attention deficit hyperactivity disorder (ADHD), often overlook the integration of spatial and…

图像与视频处理 · 电气工程与系统科学 2025-08-08 Wenhao Dong , Yueyang Li , Weiming Zeng , Lei Chen , Hongjie Yan , Wai Ting Siok , Nizhuan Wang

At present, people usually use some methods based on convolutional neural networks (CNNs) for Electroencephalograph (EEG) decoding. However, CNNs have limitations in perceiving global dependencies, which is not adequate for common EEG…

信号处理 · 电气工程与系统科学 2021-06-23 Yonghao Song , Xueyu Jia , Lie Yang , Longhan Xie

Most existing methods for depth estimation from a focal stack of images employ convolutional neural networks (CNNs) using 2D or 3D convolutions over a fixed set of images. However, their effectiveness is constrained by the local properties…

计算机视觉与模式识别 · 计算机科学 2024-12-05 Xueyang Kang , Fengze Han , Abdur R. Fayjie , Patrick Vandewalle , Kourosh Khoshelham , Dong Gong

Remote photoplethysmography (rPPG), which aims at measuring heart activities and physiological signals from facial video without any contact, has great potential in many applications (e.g., remote healthcare and affective computing). Recent…

计算机视觉与模式识别 · 计算机科学 2022-05-24 Zitong Yu , Yuming Shen , Jingang Shi , Hengshuang Zhao , Philip Torr , Guoying Zhao

Transformers have recently gained attention in the computer vision domain due to their ability to model long-range dependencies. However, the self-attention mechanism, which is the core part of the Transformer model, usually suffers from…

计算机视觉与模式识别 · 计算机科学 2023-07-28 Reza Azad , René Arimond , Ehsan Khodapanah Aghdam , Amirhossein Kazerouni , Dorit Merhof

In skeleton-based action recognition, Graph Convolutional Networks model human skeletal joints as vertices and connect them through an adjacency matrix, which can be seen as a local attention mask. However, in most existing Graph…

计算机视觉与模式识别 · 计算机科学 2022-07-13 Hao Xing , Darius Burschka

Spiking neural networks (SNNs) mimic brain computational strategies, and exhibit substantial capabilities in spatiotemporal information processing. As an essential factor for human perception, visual attention refers to the dynamic process…

计算机视觉与模式识别 · 计算机科学 2024-10-28 Wuque Cai , Hongze Sun , Rui Liu , Yan Cui , Jun Wang , Yang Xia , Dezhong Yao , Daqing Guo