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This study presents a systematic machine-learning approach for classifying acute pain from raw electrophysiological signals. We address binary and ternary classification tasks, leveraging Power-In-Band (PIB) and signal coherence as…

Signal Processing · Electrical Eng. & Systems 2025-03-06 Sidharth Sidharth , Vishwas Sathish , Shweta Bansal , Samantha Sun , Timmy Pham , Kurt Weaver , Rajesh P. N. Rao , Jeffrey Herron

Despite recent advances in brain research, understanding the various signals for pain and pain intensities in the brain cortex is still a complex task due to temporal and spatial variations of brain hemodynamics. In this paper we have…

Neurons and Cognition · Quantitative Biology 2015-07-28 Raul Fernandez Rojas , Xu Huang , Keng Liang Ou , Dat Tran , Sheikh Md. Rabiul Islam

Simulation-based imaging (SBI) is a blood flow imaging technique that optimally fits a computational fluid dynamics (CFD) simulation to low-resolution, noisy magnetic resonance (MR) flow data to produce a high-resolution velocity field. In…

Numerical Analysis · Mathematics 2021-10-01 Charles J. Naudet , Johannes Toger , Matthew J. Zahr

Short inversion time inversion recovery (STIR) MRI is widely used in clinical practice to identify and quantify inflammation in axial spondyloarthritis. However, assessment of STIR images is limited by the need for qualitative evaluation,…

Facial expression recognition is a key task in human-computer interaction and affective computing. However, acquiring a large amount of labeled facial expression data is often costly. Therefore, it is particularly important to design a…

Computer Vision and Pattern Recognition · Computer Science 2026-01-12 Zhongpeng Cai , Jun Yu , Wei Xu , Tianyu Liu , Jianqing Sun , Jiaen Liang

The quantification of visual affect data (e.g. face images) is essential to build and monitor automated affect modeling systems efficiently. Considering this, this work proposes quantified facial Temporal-expressiveness Dynamics (TED) to…

Computer Vision and Pattern Recognition · Computer Science 2020-10-29 Md Taufeeq Uddin , Shaun Canavan

Accurate, reproducible burn assessment is critical for treatment planning, healing monitoring, and medico-legal documentation, yet conventional visual inspection and 2D photography are subjective and limited for longitudinal comparison.…

Computer Vision and Pattern Recognition · Computer Science 2026-02-03 S. Kalaycioglu , C. Hong , K. Zhai , H. Xie , J. N. Wong

In this paper, we present a multimodal approach to simultaneously analyze facial movements and several peripheral physiological signals to decode individualized affective experiences under positive and negative emotional contexts, while…

Computer Vision and Pattern Recognition · Computer Science 2018-11-20 Yu Yin , Mohsen Nabian , Miolin Fan , ChunAn Chou , Maria Gendron , Sarah Ostadabbas

We propose a novel method for automatic pain intensity estimation from facial images based on the framework of kernel Conditional Ordinal Random Fields (KCORF). We extend this framework to account for heteroscedasticity on the output…

Computer Vision and Pattern Recognition · Computer Science 2013-04-04 Ognjen Rudovic , Maja Pantic , Vladimir Pavlovic

Leveraging Transformer attention has led to great advancements in HDR deghosting. However, the intricate nature of self-attention introduces practical challenges, as existing state-of-the-art methods often demand high-end GPUs or exhibit…

Computer Vision and Pattern Recognition · Computer Science 2024-04-10 Xiaoning Liu , Ao Li , Zongwei Wu , Yapeng Du , Le Zhang , Yulun Zhang , Radu Timofte , Ce Zhu

Currently, every 1 in 54 children have been diagnosed with Autism Spectrum Disorder (ASD), which is 178% higher than it was in 2000. An early diagnosis and treatment can significantly increase the chances of going off the spectrum and…

Computer Vision and Pattern Recognition · Computer Science 2021-04-05 Spencer He , Ryan Liu

Unsupervised domain adaptation (UDA) aims to adapt a model trained on the source domain (e.g. synthetic data) to the target domain (e.g. real-world data) without requiring further annotations on the target domain. This work focuses on UDA…

Computer Vision and Pattern Recognition · Computer Science 2022-07-27 Lukas Hoyer , Dengxin Dai , Luc Van Gool

Current AI-assisted skin image diagnosis has achieved dermatologist-level performance in classifying skin cancer, driven by rapid advancements in deep learning architectures. However, unlike traditional vision tasks, skin images in general…

Computer Vision and Pattern Recognition · Computer Science 2025-01-17 Xin Hu , Janet Wang , Jihun Hamm , Rie R Yotsu , Zhengming Ding

In this paper, a hardware-optimized approach to emotion recognition based on the efficient brain-inspired hyperdimensional computing (HDC) paradigm is proposed. Emotion recognition provides valuable information for human-computer…

Emerging Technologies · Computer Science 2021-04-08 Alisha Menon , Anirudh Natarajan , Reva Agashe , Daniel Sun , Melvin Aristio , Harrison Liew , Yakun Sophia Shao , Jan M. Rabaey

Stress affects physical and mental health, and wearable devices have been widely used to detect daily stress through physiological signals. However, these signals vary due to factors such as individual differences and health conditions,…

Machine Learning · Computer Science 2025-06-04 Yi Xiao , Harshit Sharma , Sawinder Kaur , Dessa Bergen-Cico , Asif Salekin

Sensor-based Human Activity Recognition facilitates unobtrusive monitoring of human movements. However, determining the most effective sensor placement for optimal classification performance remains challenging. This paper introduces a…

Machine Learning · Computer Science 2023-07-07 Orhan Konak , Alexander Wischmann , Robin van de Water , Bert Arnrich

In recent years, Affective Computing and its applications have become a fast-growing research topic. Furthermore, the rise of Deep Learning has introduced significant improvements in the emotion recognition system compared to classical…

Computer Vision and Pattern Recognition · Computer Science 2020-01-22 Joaquim Comas , Decky Aspandi , Xavier Binefa

The accurate diagnosis and segmentation of tumors in contrast-enhanced Computed Tomography (CT) are fundamentally driven by the distinctive hemodynamic profiles of contrast agents over time. However, in real-world clinical practice,…

Computer Vision and Pattern Recognition · Computer Science 2026-03-02 Zishuo Wan , Qinqin Kang , Na Li , Yi Huang , Qianru Zhang , Le Lu , Yun Bian , Dawei Ding , Ke Yan

Quantitative assessment of treatment response in Advanced Prostate Cancer (APC) with bone metastases remains an unmet clinical need. Whole-Body Diffusion-Weighted MRI (WB-DWI) provides two response biomarkers: Total Diffusion Volume (TDV)…

By leveraging temporal dependency in video sequences, multi-frame human pose estimation algorithms have demonstrated remarkable results in complicated situations, such as occlusion, motion blur, and video defocus. These algorithms are…

Computer Vision and Pattern Recognition · Computer Science 2024-04-02 Jijie He , Wenwu Yang