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Facial pain expression is an important modality for assessing pain, especially when the patient's verbal ability to communicate is impaired. The facial muscle-based action units (AUs), which are defined by the Facial Action Coding System…

Computer Vision and Pattern Recognition · Computer Science 2018-11-21 Zhanli Chen , Rashid Ansari , Diana Wilkie

There is an increasing consensus among re- searchers that making a computer emotionally intelligent with the ability to decode human affective states would allow a more meaningful and natural way of human-computer interactions (HCIs). One…

Human-Computer Interaction · Computer Science 2016-06-02 Maria S. Perez-Rosero , Behnaz Rezaei , Murat Akcakaya , Sarah Ostadabbas

Getting pain intensity from face images is an important problem in autonomous nursing systems. However, due to the limitation in data sources and the subjectiveness in pain intensity values, it is hard to adopt modern deep neural networks…

Computer Vision and Pattern Recognition · Computer Science 2018-11-21 Conghui Li , Zhaocheng Zhu , Yuming Zhao

Previous research on automatic pain estimation from facial expressions has focused primarily on "one-size-fits-all" metrics (such as PSPI). In this work, we focus on directly estimating each individual's self-reported visual-analog scale…

Computer Vision and Pattern Recognition · Computer Science 2017-08-17 Dianbo Liu , Fengjiao Peng , Andrew Shea , Ognjen , Rudovic , Rosalind Picard

This paper proposes a new approach to model the temporal dynamics of a sequence of facial expressions. To this purpose, a sequence of Face Image Descriptors (FID) is regarded as the output of a Linear Time Invariant (LTI) system. The…

Computer Vision and Pattern Recognition · Computer Science 2015-06-17 Liliana Lo Presti , Marco La Cascia

In this paper, we introduce fastHDMI, a Python package designed for efficient variable screening in high-dimensional datasets, particularly neuroimaging data. This work pioneers the application of three mutual information estimation methods…

Machine Learning · Statistics 2024-10-15 Kai Yang , Masoud Asgharian , Nikhil Bhagwat , Jean-Baptiste Poline , Celia M. T. Greenwood

Estimation of pain intensity from facial expressions captured in videos has an immense potential for health care applications. Given the challenges related to subjective variations of facial expressions, and operational capture conditions,…

Computer Vision and Pattern Recognition · Computer Science 2024-07-09 R. Gnana Praveen , Eric Granger , Patrick Cardinal

The scarcity of annotated surgical data poses a significant challenge for developing deep learning systems in computer-assisted interventions. While diffusion models can synthesize realistic images, they often suffer from data memorization,…

Computer Vision and Pattern Recognition · Computer Science 2025-09-24 Danush Kumar Venkatesh , Stefanie Speidel

Deep neural networks are increasingly applied in automated histopathology. Yet, whole-slide images (WSIs) are often acquired at gigapixel sizes, rendering them computationally infeasible to analyze entirely at high resolution. Diagnostic…

Image and Video Processing · Electrical Eng. & Systems 2026-02-10 Tarun G , Naman Malpani , Gugan Thoppe , Sridharan Devarajan

Understanding pain-related facial behaviors is essential for digital healthcare in terms of effective monitoring, assisted diagnostics, and treatment planning, particularly for patients unable to communicate verbally. Existing data-driven…

Machine Learning · Computer Science 2025-06-18 Zhiyu Wang , Yang Liu , Hatice Gunes

Pain is a complex condition that affects a large portion of the population. Accurate and consistent evaluation is essential for individuals experiencing pain and supports the development of effective and advanced management strategies.…

Artificial Intelligence · Computer Science 2025-09-17 Stefanos Gkikas , Ioannis Kyprakis , Manolis Tsiknakis

Pain is a serious worldwide health problem that affects a vast proportion of the population. For efficient pain management and treatment, accurate classification and evaluation of pain severity are necessary. However, this can be…

Machine Learning · Computer Science 2023-12-19 Zhenyuan Lu , Burcu Ozek , Sagar Kamarthi

Video-based Emotional Reaction Intensity (ERI) estimation measures the intensity of subjects' reactions to stimuli along several emotional dimensions from videos of the subject as they view the stimuli. We propose a multi-modal architecture…

Computer Vision and Pattern Recognition · Computer Science 2023-05-10 Yini Fang , Liang Wu , Frederic Jumelle , Bertram Shi

Human-Computer Interaction (HCI) is a multi-modal, interdisciplinary field focused on designing, studying, and improving the interactions between people and computer systems. This involves the design of systems that can recognize,…

Human-Computer Interaction · Computer Science 2025-08-15 Paul Schreiber , Beyza Cinar , Lennart Mackert , Maria Maleshkova

Automatic pain intensity estimation possesses a significant position in healthcare and medical field. Traditional static methods prefer to extract features from frames separately in a video, which would result in unstable changes and peaks…

Computer Vision and Pattern Recognition · Computer Science 2016-05-04 Jing Zhou , Xiaopeng Hong , Fei Su , Guoying Zhao

Traditional methods for visualizing dynamic human expressions, particularly in medical training, often rely on flat-screen displays or static mannequins, which have proven inefficient for realistic simulation. In response, we propose a…

Graphics · Computer Science 2025-02-13 Tri Tung Nguyen Nguyen , Fujii Yasuyuki , Dinh Tuan Tran , Joo-Ho Lee

Nearly a quarter of visits to the Emergency Department are for conditions that could have been managed via outpatient treatment; improvements that allow patients to quickly recognize and receive appropriate treatment are crucial. The…

Quantitative Methods · Quantitative Biology 2021-12-01 Sara M. Clifton , Chaeryon Kang , Jingyi Jessica Li , Qi Long , Nirmish Shah , Daniel M. Abrams

We propose an automatic method to estimate self-reported pain based on facial landmarks extracted from videos. For each video sequence, we decompose the face into four different regions and the pain intensity is measured by modeling the…

Computer Vision and Pattern Recognition · Computer Science 2022-09-20 Benjamin Szczapa , Mohamed Daoudi , Stefano Berretti , Pietro Pala , Alberto Del Bimbo , Zakia Hammal

The rapid growth of hyperspectral data archives in remote sensing (RS) necessitates effective compression methods for storage and transmission. Recent advances in learning-based hyperspectral image (HSI) compression have significantly…

Computer Vision and Pattern Recognition · Computer Science 2026-03-30 Martin Hermann Paul Fuchs , Behnood Rasti , Begüm Demir

High-dimensional hyperspectral imaging (HSI) enables the visualization of ultrafast molecular dynamics and complex, heterogeneous spectra. However, applying this capability to resolve spatially varying vibrational couplings in…

Image and Video Processing · Electrical Eng. & Systems 2026-04-09 Chi-Jui Ho , Harsh Bhakta , Wei Xiong , Nicholas Antipa