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With the widespread adoption of millimeter-wave (mmWave) massive multi-input-multi-output (MIMO) in vehicular networks, accurate beam prediction and alignment have become critical for high-speed data transmission and reliable access. While…

Information Theory · Computer Science 2026-03-27 Chenyiming Wen , Binpu Shi , Min Li , Ming-Min Zhao , Min-Jian Zhao , Jiangzhou Wang

Medical multimodal learning faces significant challenges with missing modalities prevalent in clinical practice. Existing approaches assume equal contribution of modality and random missing patterns, neglecting inherent uncertainty in…

Machine Learning · Computer Science 2026-01-30 Linxiao Gong , Yang Liu , Lianlong Sun , Yulai Bi , Jing Liu , Xiaoguang Zhu

Many applications involve humans in the loop, where continuous and accurate human motion monitoring provides valuable information for safe and intuitive human-machine interaction. Portable devices such as inertial measurement units (IMUs)…

Systems and Control · Electrical Eng. & Systems 2023-04-12 Xiaobing Dai , Huanzhuo Wu , Siyi Wang , Junjie Jiao , Giang T. Nguyen , Frank H. P. Fitzek , Sandra Hirche

Traditional vision-based material perception methods often experience substantial performance degradation under visually impaired conditions, thereby motivating the shift toward non-visual multimodal material perception. Despite this,…

Machine Learning · Computer Science 2025-11-26 Kailin Lyu , Long Xiao , Jianing Zeng , Junhao Dong , Xuexin Liu , Zhuojun Zou , Haoyue Yang , Lin Shu , Jie Hao

With the growing success of multi-modal learning, research on the robustness of multi-modal models, especially when facing situations with missing modalities, is receiving increased attention. Nevertheless, previous studies in this domain…

Artificial Intelligence · Computer Science 2023-10-11 Siting Li , Chenzhuang Du , Yue Zhao , Yu Huang , Hang Zhao

One of the primary challenges in the field of human activity recognition (HAR) is the lack of large labeled datasets. This hinders the development of robust and generalizable models. Recently, cross modality transfer approaches have been…

Computer Vision and Pattern Recognition · Computer Science 2024-02-05 Zikang Leng , Amitrajit Bhattacharjee , Hrudhai Rajasekhar , Lizhe Zhang , Elizabeth Bruda , Hyeokhyen Kwon , Thomas Plötz

We propose a novel convolutional neural network approach to address the fine-grained recognition problem of multi-view dynamic facial action unit detection. We leverage recent gains in large-scale object recognition by formulating the task…

Computer Vision and Pattern Recognition · Computer Science 2018-08-21 Andres Romero , Juan Leon , Pablo Arbelaez

Human activity recognition (HAR) based on multimodal sensors has become a rapidly growing branch of biometric recognition and artificial intelligence. However, how to fully mine multimodal time series data and effectively learn accurate…

Computer Vision and Pattern Recognition · Computer Science 2022-05-25 Jialiang Wang , Haotian Wei , Yi Wang , Shu Yang , Chi Li

IMU-based gesture interfaces are being increasingly adopted as efficient, accessible, and intuitive alternatives to traditional input methods, such as touchscreens and voice. However, current gesture recognition algorithms are tailored to…

Human-Computer Interaction · Computer Science 2026-03-13 Prerna Khanna , Tanmay Srivastava , Shubham Jain , Aruna Balasubramanian

Human activity recognition (HAR) using wearable sensors has benefited much less from recent advances in Machine Learning than fields such as computer vision and natural language processing. This is to a large extent due to the lack of large…

Artificial Intelligence · Computer Science 2020-11-24 Vitor Fortes Rey , Kamalveer Kaur Garewal , Paul Lukowicz

The combination of increased life expectancy and falling birth rates is resulting in an aging population. Wearable Sensor-based Human Activity Recognition (WSHAR) emerges as a promising assistive technology to support the daily lives of…

Signal Processing · Electrical Eng. & Systems 2024-04-25 Jianyuan Ni , Hao Tang , Syed Tousiful Haque , Yan Yan , Anne H. H. Ngu

Multi-modal learning has been intensified in recent years, especially for applications in facial analysis and action unit detection whilst there still exist two main challenges in terms of 1) relevant feature learning for representation and…

Computer Vision and Pattern Recognition · Computer Science 2022-03-23 Xiang Zhang , Lijun Yin

Foundation Models (FM) have increasingly drawn the attention of researchers due to their scalability and generalization across diverse tasks. Inspired by the success of FMs and the principles that have driven advancements in Large Language…

Computer Vision and Pattern Recognition · Computer Science 2025-02-26 Mohammadreza Baharani , Ghazal Alinezhad Noghre , Armin Danesh Pazho , Gabriel Maldonado , Hamed Tabkhi

Human operators are still frequently exposed to hazardous environments such as disaster zones and industrial facilities, where intuitive and reliable teleoperation of mobile robots and Unmanned Aerial Vehicles (UAVs) is essential. In this…

Face recognition is a crucial task in various multimedia applications such as security check, credential access and motion sensing games. However, the task is challenging when an input face is noisy (e.g. poor-condition RGB image) or lacks…

Computer Vision and Pattern Recognition · Computer Science 2021-12-09 Wenbin Teng , Chongyang Bai

We present a novel approach for action recognition in UAV videos. Our formulation is designed to handle occlusion and viewpoint changes caused by the movement of a UAV. We use the concept of mutual information to compute and align the…

Computer Vision and Pattern Recognition · Computer Science 2023-11-17 Ruiqi Xian , Xijun Wang , Dinesh Manocha

With the continuous emergence of various social media platforms frequently used in daily life, the multimodal meme understanding (MMU) task has been garnering increasing attention. MMU aims to explore and comprehend the meanings of memes…

Computation and Language · Computer Science 2025-03-18 Li Zheng , Hao Fei , Ting Dai , Zuquan Peng , Fei Li , Huisheng Ma , Chong Teng , Donghong Ji

Millimeter-wave (mmWave) radar-based gesture recognition is gaining attention as a key technology to enable intuitive human-machine interaction. Nevertheless, the significant challenge lies in obtaining large-scale, high-quality mmWave…

Human-Computer Interaction · Computer Science 2024-12-23 Huanqi Yang , Mingda Han , Xinyue Li , Di Duan , Tianxing Li , Weitao Xu

The development of robust, generalized models in human activity recognition (HAR) has been hindered by the scarcity of large-scale, labeled data sets. Recent work has shown that virtual IMU data extracted from videos using computer vision…

Computer Vision and Pattern Recognition · Computer Science 2023-05-08 Zikang Leng , Hyeokhyen Kwon , Thomas Plötz

Recent studies confirm the applicability of Inertial Measurement Unit (IMU)-based systems for human motion analysis. Notwithstanding, high-end IMU-based commercial solutions are yet too expensive and complex to democratize their use among a…