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Photoplethysmogram (PPG) and electrocardiogram (ECG) are commonly recorded in intesive care unit (ICU) and operating room (OR). However, the high incidence of poor, incomplete, and inconsistent signal quality, can lead to false alarms or…

Machine Learning · Computer Science 2025-09-16 Zongheng Guo , Tao Chen , Manuela Ferrario

Photoplethysmography (PPG) sensors allow for non-invasive and comfortable heart-rate (HR) monitoring, suitable for compact wrist-worn devices. Unfortunately, Motion Artifacts (MAs) severely impact the monitoring accuracy, causing high…

LiDAR-based 3D object detection has made impressive progress recently, yet most existing models are black-box, lacking interpretability. Previous explanation approaches primarily focus on analyzing image-based models and are not readily…

Computer Vision and Pattern Recognition · Computer Science 2024-05-22 Shuai Liu , Boyang Li , Zhiyu Fang , Mingyue Cui , Kai Huang

Image restoration is a challenging ill-posed problem which estimates latent sharp image from its degraded counterpart. Although the existing methods have achieved promising performance by designing novelty architecture of module, they…

Computer Vision and Pattern Recognition · Computer Science 2024-05-21 Hu Gao , Bowen Ma , Ying Zhang , Jingfan Yang , Jing Yang , Depeng Dang

Fluorescence microscopy allows for a detailed inspection of cells, cellular networks, and anatomical landmarks by staining with a variety of carefully-selected markers visualized as color channels. Quantitative characterization of…

Computer Vision and Pattern Recognition · Computer Science 2021-08-26 Alvaro Gomariz , Tiziano Portenier , Patrick M. Helbling , Stephan Isringhausen , Ute Suessbier , César Nombela-Arrieta , Orcun Goksel

The Segment Anything Model (SAM) marks a notable milestone in segmentation models, highlighted by its robust zero-shot capabilities and ability to handle diverse prompts. SAM follows a pipeline that separates interactive segmentation into…

Computer Vision and Pattern Recognition · Computer Science 2024-05-30 You Huang , Zongyu Lan , Liujuan Cao , Xianming Lin , Shengchuan Zhang , Guannan Jiang , Rongrong Ji

Diffusion models have been extensively leveraged for learning robot skills from demonstrations. These policies are conditioned on several observational modalities such as proprioception, vision and tactile. However, observational modalities…

Robotics · Computer Science 2025-09-23 Omkar Patil , Prabin Rath , Kartikay Pangaonkar , Eric Rosen , Nakul Gopalan

With a surge in online medical advising remote monitoring of patient vitals is required. This can be facilitated with the Remote Photoplethysmography (rPPG) techniques that compute vital signs from facial videos. It involves processing…

Artificial Intelligence · Computer Science 2022-08-23 Amtul Haq Ayesha , Donghao Qiao , Farhana Zulkernine

Remote Photoplethysmography (rPPG) enables non-contact physiological signal extraction from facial videos, offering applications in psychological state analysis, medical assistance, and anti-face spoofing. However, challenges such as motion…

Computer Vision and Pattern Recognition · Computer Science 2025-01-17 Zhixin Yan , Yan Zhong , Hongbin Xu , Wenjun Zhang , Shangru Yi , Lin Shu , Wenxiong Kang

Remote photoplethysmography (rPPG) offers a promising solution for non-contact driver monitoring by detecting subtle blood flow-induced facial color changes from video. However, motion artifacts in dynamic driving environments remain key…

Image and Video Processing · Electrical Eng. & Systems 2025-09-09 Đorđe D. Nešković , Kristina Stojmenova Pečečnik , Jaka Sodnik , Nadica Miljković

Photolethysmographic imaging (PPGI) is a widefield non-contact biophotonic technology able to remotely monitor cardiovascular function over anatomical areas. Though spatial context can provide increased physiological insight, existing PPGI…

Quantitative Methods · Quantitative Biology 2016-12-21 Robert Amelard , David A Clausi , Alexander Wong

Remote physiological measurements, e.g., remote photoplethysmography (rPPG) based heart rate (HR), heart rate variability (HRV) and respiration frequency (RF) measuring, are playing more and more important roles under the application…

Computer Vision and Pattern Recognition · Computer Science 2020-07-17 Xuesong Niu , Zitong Yu , Hu Han , Xiaobai Li , Shiguang Shan , Guoying Zhao

Visual speech recognition is the task to decode the speech content from a video based on visual information, especially the movements of lips. It is also referenced as lipreading. Motivated by two problems existing in lipreading, words with…

Computer Vision and Pattern Recognition · Computer Science 2019-01-14 Jingyun Xiao

Photoacoustic computed tomography (PACT) is a proven technology for imaging hemodynamics in deep brain of small animal models. PACT is inherently compatible with ultrasound (US) imaging, providing complementary contrast mechanisms. While…

Instrumentation and Detectors · Physics 2023-07-28 Yuqi Tang , Zhijie Dong , Nanchao Wang , Angela del Aguila , Natalie Johnston , Tri Vu , Chenshuo Ma , Yirui Xu , Wei Yang , Pengfei Song , Junjie Yao

Disentangling attributes of various sensory signals is central to human-like perception and reasoning and a critical task for higher-order cognitive and neuro-symbolic AI systems. An elegant approach to represent this intricate…

Hardware Architecture · Computer Science 2024-04-08 Zishen Wan , Che-Kai Liu , Mohamed Ibrahim , Hanchen Yang , Samuel Spetalnick , Tushar Krishna , Arijit Raychowdhury

Detecting 3D mask attacks to a face recognition system is challenging. Although genuine faces and 3D face masks show significantly different remote photoplethysmography (rPPG) signals, rPPG-based face anti-spoofing methods often suffer from…

Computer Vision and Pattern Recognition · Computer Science 2023-05-26 Chenglin Yao , Jianfeng Ren , Ruibin Bai , Heshan Du , Jiang Liu , Xudong Jiang

Functional MRI (fMRI) research, employing naturalistic stimuli like movies, explores brain network interactions in complex cognitive processes such as empathy. The empathy network encompasses multiple brain areas, including the Insula, PFC,…

Neurons and Cognition · Quantitative Biology 2024-03-13 Sasanka GRS , Ayushi Agrawal , Santosh Nannuru , Kavita Vemuri

Attention is a fundamental component of the human visual recognition system. The inclusion of attention in a convolutional neural network amplifies relevant visual features and suppresses the less important ones. Integrating attention…

Image and Video Processing · Electrical Eng. & Systems 2025-06-02 Anam Hashmi , Julia Dietlmeier , Kathleen M. Curran , Noel E. O'Connor

High-fidelity video generation remains challenging for diffusion models due to the difficulty of modeling complex spatio-temporal dynamics efficiently. Recent video diffusion methods typically represent a video as a sequence of…

Computer Vision and Pattern Recognition · Computer Science 2026-04-21 Minh Khoa Le , Kien Do , Duc Thanh Nguyen , Truyen Tran

Remote physiological measurement (RPM) is an essential tool for healthcare monitoring as it enables the measurement of physiological signs, e.g., heart rate, in a remote setting via physical wearables. Recently, with facial videos, we have…

Computer Vision and Pattern Recognition · Computer Science 2024-06-21 Hao Wang , Euijoon Ahn , Jinman Kim