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Photoplethysmography (PPG) is widely used as a non-invasive and accessible modality for continuous health monitoring. However, despite being a peripheral hemodynamic signal intrinsically coupled with systemic circulation, existing research…

信号处理 · 电气工程与系统科学 2026-03-20 Guangkun Nie , Xiaocheng Fang , Gongzheng Tang , Yujie Xiao , Jun Li , Bo Liu , Hongyan Li , Shenda Hong

Wearable devices such as smartwatches are becoming increasingly popular tools for objectively monitoring physical activity in free-living conditions. To date, research has primarily focused on the purely supervised task of human activity…

信号处理 · 电气工程与系统科学 2021-05-26 Dimitris Spathis , Ignacio Perez-Pozuelo , Soren Brage , Nicholas J. Wareham , Cecilia Mascolo

Respiratory rate (RR) serves as an indicator of various medical conditions, such as cardiovascular diseases and sleep disorders. These RR estimation methods were mostly designed for finger-based PPG collected from subjects in stationary…

信号处理 · 电气工程与系统科学 2024-01-12 Kianoosh Kazemi , Iman Azimi , Pasi Liljeberg , Amir M. Rahmani

Photoplethysmography (PPG) sensor in wearable and clinical devices provides valuable physiological insights in a non-invasive and real-time fashion. Specialized Foundation Models (FM) or repurposed time-series FMs are used to benchmark…

计算机视觉与模式识别 · 计算机科学 2025-10-14 Saurabh Kataria , Ayca Ermis , Lovely Yeswanth Panchumarthi , Minxiao Wang , Xiao Hu

Multi-channel photoplethysmography (PPG) sensors have found widespread adoption in wearable devices for monitoring cardiac health. Channels thereby serve different functions -- whereas green is commonly used for metrics such as heart rate…

信号处理 · 电气工程与系统科学 2024-12-24 Manuel Meier , Berken Utku Demirel , Christian Holz

Foundation models have transformed vision and language by learning general-purpose representations from large-scale unlabeled data, yet 3D medical imaging lacks analogous approaches. Existing self-supervised methods rely on low-level…

计算机视觉与模式识别 · 计算机科学 2026-03-17 Yunhe Gao , Yabin Zhang , Chong Wang , Jiaming Liu , Maya Varma , Jean-Benoit Delbrouck , Akshay Chaudhari , Curtis Langlotz

Foundation models, large-scale, pre-trained deep-learning models adapted to a wide range of downstream tasks have gained significant interest lately in various deep-learning problems undergoing a paradigm shift with the rise of these…

计算机视觉与模式识别 · 计算机科学 2023-10-31 Bobby Azad , Reza Azad , Sania Eskandari , Afshin Bozorgpour , Amirhossein Kazerouni , Islem Rekik , Dorit Merhof

Deep learning has significantly advanced PET image re-construction, achieving remarkable improvements in image quality through direct training on sinogram or image data. Traditional methods often utilize masks for inpainting tasks, but…

计算机视觉与模式识别 · 计算机科学 2025-03-12 Bin Huang , Binzhong He , Yanhan Chen , Zhili Liu , Xinyue Wang , Binxuan Li , Qiegen Liu

Foundation models have reshaped the landscape of Remote Sensing (RS) by enhancing various image interpretation tasks. Pretraining is an active research topic, encompassing supervised and self-supervised learning methods to initialize model…

计算机视觉与模式识别 · 计算机科学 2024-05-31 Di Wang , Jing Zhang , Minqiang Xu , Lin Liu , Dongsheng Wang , Erzhong Gao , Chengxi Han , Haonan Guo , Bo Du , Dacheng Tao , Liangpei Zhang

Pretrained Foundation Models (PFMs) are regarded as the foundation for various downstream tasks with different data modalities. A PFM (e.g., BERT, ChatGPT, and GPT-4) is trained on large-scale data which provides a reasonable parameter…

Foundation models (FMs) are large-scale deep learning models trained on massive datasets, often using self-supervised learning techniques. These models serve as a versatile base for a wide range of downstream tasks, including those in…

机器学习 · 计算机科学 2025-01-17 Wasif Khan , Seowung Leem , Kyle B. See , Joshua K. Wong , Shaoting Zhang , Ruogu Fang

Photoplethysmography (PPG) is widely used in wearable health monitoring, but its reliability is often degraded by noise and motion artifacts, limiting downstream applications such as heart rate (HR) estimation. This paper presents a deep…

机器学习 · 计算机科学 2025-10-14 I Chiu , Yu-Tung Liu , Kuan-Chen Wang , Hung-Yu Wei , Yu Tsao

Polymers are high-molecular-weight compounds constructed by the covalent bonding of numerous identical or similar monomers so that their 3D structures are complex yet exhibit unignorable regularity. Typically, the properties of a polymer,…

机器学习 · 计算机科学 2024-07-29 Fanmeng Wang , Wentao Guo , Minjie Cheng , Shen Yuan , Hongteng Xu , Zhifeng Gao

Medical multi-modal pre-training has revealed promise in computer-aided diagnosis by leveraging large-scale unlabeled datasets. However, existing methods based on masked autoencoders mainly rely on data-level reconstruction tasks, but lack…

计算机视觉与模式识别 · 计算机科学 2024-04-10 Yupei Zhang , Li Pan , Qiushi Yang , Tan Li , Zhen Chen

Advances in markerless motion capture are expanding access to biomechanical movement analysis, making it feasible to obtain high-quality movement data from outpatient clinics, inpatient hospitals, therapy, and even home. Expanding access to…

计算机视觉与模式识别 · 计算机科学 2025-05-27 Ruize Yang , Ann Kennedy , R. James Cotton

While multi-modal learning has been widely used for MRI reconstruction, it relies on paired multi-modal data which is difficult to acquire in real clinical scenarios. Especially in the federated setting, the common situation is that several…

图像与视频处理 · 电气工程与系统科学 2023-08-23 Yunlu Yan , Chun-Mei Feng , Yuexiang Li , Rick Siow Mong Goh , Lei Zhu

Machine learning models of vastly different modalities and architectures are being trained to predict the behavior of molecules, materials, and proteins. However, it remains unclear whether they learn similar internal representations of…

机器学习 · 计算机科学 2025-12-04 Sathya Edamadaka , Soojung Yang , Ju Li , Rafael Gómez-Bombarelli

Photoplethysmography (PPG) is a widely adopted, non-invasive technique for monitoring cardiovascular health and physiological parameters in both consumer and clinical settings. While motion artifacts in dynamic environments have been…

人机交互 · 计算机科学 2025-04-17 Manh Pham Hung , Matthew Yiwen Ho , Yiming Zhang , Dimitris Spathis , Aaqib Saeed , Dong Ma

Magnetic Resonance Fingerprinting (MRF) enables fast quantitative imaging, yet reconstructing high-resolution 3D data remains computationally demanding. Non-Cartesian reconstructions require repeated non-uniform FFTs, and the commonly used…

图像与视频处理 · 电气工程与系统科学 2026-02-13 Yonatan Urman , Mark Nishimura , Daniel Abraham , Xiaozhi Cao , Kawin Setsompop

We propose Mask Guided (MG) Matting, a robust matting framework that takes a general coarse mask as guidance. MG Matting leverages a network (PRN) design which encourages the matting model to provide self-guidance to progressively refine…

计算机视觉与模式识别 · 计算机科学 2021-04-05 Qihang Yu , Jianming Zhang , He Zhang , Yilin Wang , Zhe Lin , Ning Xu , Yutong Bai , Alan Yuille