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Reconstructing natural images from functional magnetic resonance imaging (fMRI) data remains a core challenge in natural decoding due to the mismatch between the richness of visual stimuli and the noisy, low resolution nature of fMRI…

图像与视频处理 · 电气工程与系统科学 2025-09-03 Junliang Ye , Lei Wang , Md Zakir Hossain

Remote photoplethysmography (rPPG) technique extracts blood volume pulse (BVP) signals from subtle pixel changes in video frames. This study introduces rFaceNet, an advanced rPPG method that enhances the extraction of facial BVP signals…

计算机视觉与模式识别 · 计算机科学 2024-03-19 Dali Zhu , Wenli Zhang , Hualin Zeng , Xiaohao Liu , Long Yang , Jiaqi Zheng

Remote photoplethysmography (rPPG) allows for noncontact monitoring of blood volume changes from a camera by detecting minor fluctuations in reflected light. Prior applications of rPPG focused on face videos. In this paper we explored the…

计算机视觉与模式识别 · 计算机科学 2023-03-23 Lu Niu , Jeremy Speth , Nathan Vance , Benjamin Sporrer , Adam Czajka , Patrick Flynn

Remote photoplethysmography (rPPG) captures cardiac signals from facial videos and is gaining attention for its diverse applications. While deep learning has advanced rPPG estimation, it relies on large, diverse datasets for effective…

计算机视觉与模式识别 · 计算机科学 2025-07-22 Joaquim Comas , Federico Sukno

Remote photoplethysmography (rPPG) is a non-contact technique for measuring human physiological signals. Due to its convenience and non-invasiveness, it has demonstrated broad application potential in areas such as health monitoring and…

计算机视觉与模式识别 · 计算机科学 2025-07-08 Zhipeng Li , Kegang Wang , Hanguang Xiao , Xingyue Liu , Feizhong Zhou , Jiaxin Jiang , Tianqi Liu

Remote photoplethysmography (rPPG) based physiological measurement is an emerging yet crucial vision task, whose challenge lies in exploring accurate rPPG prediction from facial videos accompanied by noises of illumination variations,…

计算机视觉与模式识别 · 计算机科学 2023-08-16 Wei Qian , Dan Guo , Kun Li , Xilan Tian , Meng Wang

Remote photoplethysmography (rPPG) is a technique for estimating blood volume changes from reflected light without the need for a contact sensor. We present the first examples of presentation attacks in the digital and physical domains on…

计算机视觉与模式识别 · 计算机科学 2021-10-25 Jeremy Speth , Nathan Vance , Patrick Flynn , Kevin W. Bowyer , Adam Czajka

Remote photoplethysmography (rPPG), which aims at measuring heart activities without any contact, has great potential in many applications (e.g., remote healthcare). Existing rPPG approaches rely on analyzing very fine details of facial…

图像与视频处理 · 电气工程与系统科学 2019-07-30 Zitong Yu , Wei Peng , Xiaobai Li , Xiaopeng Hong , Guoying Zhao

Remote Photoplethysmography (rPPG) is a promising technique to monitor physiological signals such as heart rate from facial videos. However, the labeled facial videos in this research are challenging to collect. Current rPPG research is…

计算机视觉与模式识别 · 计算机科学 2025-02-07 Bingjie Wu , Zitong Yu , Yiping Xie , Wei Liu , Chaoqi Luo , Yong Liu , Rick Siow Mong Goh

Remote photoplethysmography (rPPG) enables contactless vital sign monitoring using standard RGB cameras. However, existing methods rely on fixed parameters optimized for particular lighting conditions and camera setups, limiting…

计算机视觉与模式识别 · 计算机科学 2025-12-01 Cecilia G. Morales , Fanurs Chi En Teh , Kai Li , Pushpak Agrawal , Artur Dubrawski

Remote photoplethysmography (rPPG) enables non-invasive extraction of blood volume pulse signals through imaging, transforming spatial-temporal data into time series signals. Advances in end-to-end rPPG approaches have focused on this…

计算机视觉与模式识别 · 计算机科学 2024-11-05 Jitesh Joshi , Sos S. Agaian , Youngjun Cho

Emotion recognition from facial videos enables non-contact inference of human emotional states. Although facial expressions are widely used cues, they cannot fully reflect intrinsic affective states. Remote photoplethysmography (rPPG)…

计算机视觉与模式识别 · 计算机科学 2026-05-08 Xiwen Luo , Jia Li , Rencheng Song , Yu Liu , Juan Cheng

Remote photoplethysmography (rPPG) enables non-contact physiological measurement from facial videos; however, its practical deployment is often hindered by substantial performance degradation under domain shift. While recent deep…

计算机视觉与模式识别 · 计算机科学 2026-04-03 Ba-Thinh Nguyen , Thi-Duyen Ngo , Thanh-Trung Huynh , Thanh-Ha Le , Huy-Hieu Pham

Photoplethysmography (PPG) is the leading non-invasive technique for monitoring biosignals and cardiovascular health, with widespread adoption in both clinical settings and consumer wearable devices. While machine learning models trained on…

机器学习 · 计算机科学 2025-02-06 Arvind Pillai , Dimitris Spathis , Fahim Kawsar , Mohammad Malekzadeh

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

Subtle periodic signals such as blood volume pulse and respiration can be extracted from RGB video, enabling remote health monitoring at low cost. Advancements in remote pulse estimation -- or remote photoplethysmography (rPPG) -- are…

计算机视觉与模式识别 · 计算机科学 2023-03-15 Jeremy Speth , Nathan Vance , Patrick Flynn , Adam Czajka

Remote physiological sensing using camera-based technologies offers transformative potential for non-invasive vital sign monitoring across healthcare and human-computer interaction domains. Although deep learning approaches have advanced…

计算机视觉与模式识别 · 计算机科学 2025-05-13 Jitesh Joshi , Youngjun Cho

Camera-based physiological measurement is a growing field with neural models providing state-the-art-performance. Prior research have explored various "end-to-end" models; however these methods still require several preprocessing steps.…

计算机视觉与模式识别 · 计算机科学 2022-12-20 Xin Liu , Brian L. Hill , Ziheng Jiang , Shwetak Patel , Daniel McDuff

Image fusion aims to integrate complementary information across modalities to generate high-quality fused images, thereby enhancing the performance of high-level vision tasks. While global spatial modeling mechanisms show promising results,…

计算机视觉与模式识别 · 计算机科学 2025-07-25 Guan Zheng , Xue Wang , Wenhua Qian , Peng Liu , Runzhuo Ma

Camera-based physiological monitoring, especially remote photoplethysmography (rPPG), is a promising tool for health diagnostics, and state-of-the-art pulse estimators have shown impressive performance on benchmark datasets. We argue that…

计算机视觉与模式识别 · 计算机科学 2023-03-14 Jeremy Speth , Nathan Vance , Benjamin Sporrer , Lu Niu , Patrick Flynn , Adam Czajka