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Previous works for LiDAR-based 3D object detection mainly focus on the single-frame paradigm. In this paper, we propose to detect 3D objects by exploiting temporal information in multiple frames, i.e., the point cloud videos. We empirically…

Computer Vision and Pattern Recognition · Computer Science 2022-11-29 Junbo Yin , Jianbing Shen , Xin Gao , David Crandall , Ruigang Yang

Accurate and timely traffic flow forecasting is crucial for intelligent transportation systems. This paper presents a novel deep learning model, the Spatial-Temporal Unified Graph Attention Network (STGAtt). By leveraging a unified graph…

Machine Learning · Computer Science 2025-08-26 Zhuding Liang , Jianxun Cui , Qingshuang Zeng , Feng Liu , Nenad Filipovic , Tijana Geroski

As an important part of intelligent transportation systems, traffic forecasting has attracted tremendous attention from academia and industry. Despite a lot of methods being proposed for traffic forecasting, it is still difficult to model…

Machine Learning · Computer Science 2022-10-07 Le Zhao , Mingcai Chen , Yuntao Du , Haiyang Yang , Chongjun Wang

Online signature verification technologies, such as those available in banks and post offices, rely on dedicated digital devices such as tablets or smart pens to capture, analyze and verify signatures. In this paper, we suggest a novel…

Cryptography and Security · Computer Science 2016-12-20 Ben Nassi , Alona Levy , Yuval Elovici , Erez Shmueli

Dynamic graph representation learning has emerged as a crucial research area, driven by the growing need for analyzing time-evolving graph data in real-world applications. While recent approaches leveraging recurrent neural networks (RNNs)…

Machine Learning · Computer Science 2024-10-28 Shengxiang Hu , Guobing Zou , Song Yang , Shiyi Lin , Yanglan Gan , Bofeng Zhang

Technique of emotion recognition enables computers to classify human affective states into discrete categories. However, the emotion may fluctuate instead of maintaining a stable state even within a short time interval. There is also a…

Signal Processing · Electrical Eng. & Systems 2022-08-24 Yiwen Zhu , Kaiyu Gan , Zhong Yin

Graph neural networks (GNN) have shown significant capabilities in handling structured data, yet their application to dynamic, temporal data remains limited. This paper presents a new type of graph attention network, called TempoKGAT, which…

Machine Learning · Computer Science 2024-12-24 Lena Sasal , Daniel Busby , Abdenour Hadid

Handwritten Signature Verification (HSV) systems distinguish between genuine and forged signatures. Traditional HSV development involves a static batch configuration, constraining the system's ability to model signatures to the limited data…

Computer Vision and Pattern Recognition · Computer Science 2024-11-12 Kecia G. de Moura , Rafael M. O. Cruz , Robert Sabourin

Understanding the thickness and variability of internal ice layers in radar imagery is crucial for monitoring snow accumulation, assessing ice dynamics, and reducing uncertainties in climate models. Radar sensors, capable of penetrating…

Machine Learning · Computer Science 2025-10-30 Zesheng Liu , Maryam Rahnemoonfar

Deep learning has become a breathtaking technology in the last years, overcoming traditional handcrafted approaches and even humans for many different tasks. However, in some tasks, such as the verification of handwritten signatures, the…

Computer Vision and Pattern Recognition · Computer Science 2021-01-26 Ruben Tolosana , Ruben Vera-Rodriguez , Julian Fierrez , Javier Ortega-Garcia

Clustering high-dimensional multivariate spatiotemporal climate data is challenging due to complex temporal dependencies, evolving spatial interactions, and non-stationary dynamics. Conventional clustering methods, including recurrent and…

Machine Learning · Computer Science 2025-09-17 Francis Ndikum Nji , Vandana Janaja , Jianwu Wang

Face analysis has been studied from different angles to infer emotion, poses, shapes, and landmarks. Traditionally RGB cameras are used, yet for fine-grained tasks standard sensors might not be up to the task due to their latency, making it…

Computer Vision and Pattern Recognition · Computer Science 2024-10-30 Luca Cultrera , Federico Becattini , Lorenzo Berlincioni , Claudio Ferrari , Alberto Del Bimbo

Multimodal time series (MTS) anomaly detection is crucial for maintaining the safety and stability of working devices (e.g., water treatment system and spacecraft), whose data are characterized by multivariate time series with diverse…

Machine Learning · Computer Science 2023-10-18 Chaoyue Ding , Shiliang Sun , Jing Zhao

Skeleton-based human action recognition has achieved a great interest in recent years, as skeleton data has been demonstrated to be robust to illumination changes, body scales, dynamic camera views, and complex background. Nevertheless, an…

Computer Vision and Pattern Recognition · Computer Science 2021-06-24 Chiara Plizzari , Marco Cannici , Matteo Matteucci

Human Action Recognition (HAR) is an interesting research area in human-computer interaction used to monitor the activities of elderly and disabled individuals affected by physical and mental health. In the recent era, skeleton-based HAR…

Computer Vision and Pattern Recognition · Computer Science 2024-11-04 Faisal Mehmood , Enqing Chen , Touqeer Abbas , Samah M. Alzanin

Graph convolutional networks (GCNs) have been widely used and achieved remarkable results in skeleton-based action recognition. We think the key to skeleton-based action recognition is a skeleton hanging in frames, so we focus on how the…

Computer Vision and Pattern Recognition · Computer Science 2023-12-07 Nguyen Huu Bao Long

Smart grid infrastructure needs improved resilience and preventive maintenance through more accurate predictions. Current methodologies lack accurate representation of spatio-temporal-causal interdependencies and class imbalance in failure…

Systems and Control · Electrical Eng. & Systems 2026-01-07 Anh Le , Phat K. Huynh , Om P. Yadav , Harun Pirim , Chau Le , Trung Q. Le

Accurate hand gesture prediction is crucial for effective upper-limb prosthetic limbs control. As the high flexibility and multiple degrees of freedom exhibited by human hands, there has been a growing interest in integrating deep networks…

Human-Computer Interaction · Computer Science 2026-04-07 Wenjuan Zhong , Yuyang Zhang , Peiwen Fu , Wenxuan Xiong , Mingming Zhang

Understanding 4D point cloud videos is essential for enabling intelligent agents to perceive dynamic environments. However, temporal scale bias across varying frame rates and distributional uncertainty in irregular point clouds make it…

Computer Vision and Pattern Recognition · Computer Science 2026-03-18 Jiayi Tian , Jiaze Wang

Online signatures are one of the most commonly used biometrics. Several verification systems and public databases were presented in this field. This paper presents a combination of k-nearest neighbor and dynamic time warping algorithms as a…

Computer Vision and Pattern Recognition · Computer Science 2021-11-30 Mohammad Saleem , Bence Kovari