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Camera-based physiological measurement is a fast growing field of computer vision. Remote photoplethysmography (rPPG) utilizes imaging devices (e.g., cameras) to measure the peripheral blood volume pulse (BVP) via photoplethysmography, and…

计算机视觉与模式识别 · 计算机科学 2023-11-28 Xin Liu , Girish Narayanswamy , Akshay Paruchuri , Xiaoyu Zhang , Jiankai Tang , Yuzhe Zhang , Soumyadip Sengupta , Shwetak Patel , Yuntao Wang , Daniel McDuff

Monitoring the growth of subcortical regions of the fetal brain in ultrasound (US) images can help identify the presence of abnormal development. Manually segmenting these regions is a challenging task, but recent work has shown that it can…

It is common to observe performance degradation when transferring models trained on some (source) datasets to target testing data due to a domain gap between them. Existing methods for bridging this gap, such as domain adaptation (DA), may…

计算机视觉与模式识别 · 计算机科学 2024-05-28 Hyoungseob Park , Anjali Gupta , Alex Wong

Deep convolutional neural networks (DCNNs) based remote sensing (RS) image semantic segmentation technology has achieved great success used in many real-world applications such as geographic element analysis. However, strong dependency on…

计算机视觉与模式识别 · 计算机科学 2023-06-01 Qi Zhao , Shuchang Lyu , Binghao Liu , Lijiang Chen , Hongbo Zhao

Wearable photoplethysmography (PPG) is embedded in billions of devices, yet its optical waveform is easily corrupted by motion, perfusion loss, and ambient light, jeopardizing downstream cardiometric analytics. Existing signal-quality…

信号处理 · 电气工程与系统科学 2025-09-18 Wei Shao , Ruoyu Zhang , Zequan Liang , Ehsan Kourkchi , Setareh Rafatirad , Houman Homayoun

Test-Time Adaptation (TTA) aims to enhance the generalization of deep learning models when faced with test data that exhibits distribution shifts from the training data. In this context, only a pre-trained model and unlabeled test data are…

机器学习 · 计算机科学 2025-05-19 Linjing You , Jiabao Lu , Xiayuan Huang , Xiangli Nie

Applying the knowledge of an object detector trained on a specific domain directly onto a new domain is risky, as the gap between two domains can severely degrade model's performance. Furthermore, since different instances commonly embody…

计算机视觉与模式识别 · 计算机科学 2020-03-31 Minghao Xu , Hang Wang , Bingbing Ni , Qi Tian , Wenjun Zhang

Signal classification models based on deep neural networks are typically trained on datasets collected under controlled conditions, either simulated or over-the-air (OTA), which are constrained to specific channel environments with limited…

计算工程、金融与科学 · 计算机科学 2025-10-02 Mohammad Ali , Fuhao Li , Jielun Zhang

Remote photo-plethysmography (rPPG) uses a camera to estimate a person's heart rate (HR). Similar to how heart rate can provide useful information about a person's vital signs, insights about the underlying physio/psychological conditions…

计算机视觉与模式识别 · 计算机科学 2021-01-01 Amogh Gudi , Marian Bittner , Jan van Gemert

Remote photoplethysmography (rPPG) enables non-contact heart rate measurement from facial videos, but its performance is significantly degraded by facial motions such as speaking and head shaking. To address this issue, we propose two…

计算机视觉与模式识别 · 计算机科学 2026-04-14 Gan Pei , Junhao Ning , Boqiu Shen , Yan Zhu , Menghan Hu

Background: Photoplethysmography (PPG) is a non-invasive optical sensing technique widely used to capture hemodynamic information, with broad deployment in both clinical monitoring systems and wearable devices. In recent years, the…

人工智能 · 计算机科学 2026-05-06 Guangkun Nie , Jiabao Zhu , Gongzheng Tang , Deyun Zhang , Shijia Geng , Qinghao Zhao , Shenda Hong

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

Spatio-temporal graph neural networks have proven efficacy in capturing complex dependencies for urban computing tasks such as forecasting and kriging. Yet, their performance is constrained by the reliance on extensive data for training on…

机器学习 · 计算机科学 2024-11-08 Junfeng Hu , Xu Liu , Zhencheng Fan , Yifang Yin , Shili Xiang , Savitha Ramasamy , Roger Zimmermann

The enhanced representational power and broad applicability of deep learning models have attracted significant interest from the research community in recent years. However, these models often struggle to perform effectively under domain…

计算机视觉与模式识别 · 计算机科学 2024-12-17 Ba Hung Ngo , Doanh C. Bui , Nhat-Tuong Do-Tran , Tae Jong Choi

Deep classifiers may encounter significant performance degradation when processing unseen testing data from varying centers, vendors, and protocols. Ensuring the robustness of deep models against these domain shifts is crucial for their…

计算机视觉与模式识别 · 计算机科学 2023-06-06 Yuhao Huang , Xin Yang , Xiaoqiong Huang , Xinrui Zhou , Haozhe Chi , Haoran Dou , Xindi Hu , Jian Wang , Xuedong Deng , Dong Ni

This paper introduces ReservoirTTA, a novel plug-in framework designed for prolonged test-time adaptation (TTA) in scenarios where the test domain continuously shifts over time, including cases where domains recur or evolve gradually. At…

计算机视觉与模式识别 · 计算机科学 2025-09-19 Guillaume Vray , Devavrat Tomar , Xufeng Gao , Jean-Philippe Thiran , Evan Shelhamer , Behzad Bozorgtabar

Exploiting photoplethysmography signals (PPG) for non-invasive blood pressure (BP) measurement is interesting for various reasons. First, PPG can easily be measured using fingerclip sensors. Second, camera-based approaches allow to derive…

机器学习 · 计算机科学 2021-04-20 Fabian Schrumpf , Patrick Frenzel , Christoph Aust , Georg Osterhoff , Mirco Fuchs

Real-world model deployments demand strong performance on narrow domains where data is often scarce. Typically, practitioners finetune models to specialize them, but this risks overfitting to the domain and forgetting general knowledge. We…

In modern industrial systems, machinery frequently operates under dynamic environments with continuously varying loads and speeds. Consequently, deep learning-based fault diagnosis models often suffer from severe performance degradation…

信号处理 · 电气工程与系统科学 2026-05-22 Yakun Wang , Pengyu Han , Zeyi Liu , Xiao He , Dongming Cai , Hongshuo Zhao

In medical image segmentation tasks, the domain gap caused by the difference in data collection between training and testing data seriously hinders the deployment of pre-trained models in clinical practice. Continual Test-Time Adaptation…

计算机视觉与模式识别 · 计算机科学 2026-03-13 Xiaogang Du , Jiawei Zhang , Tongfei Liu , Tao Lei , Yingbo Wang