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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

Automated pain detection through machine learning (ML) and deep learning (DL) algorithms holds significant potential in healthcare, particularly for patients unable to self-report pain levels. However, the accuracy and fairness of these…

Computer Vision and Pattern Recognition · Computer Science 2025-06-16 Dylan Green , Yuting Shang , Jiaee Cheong , Yang Liu , Hatice Gunes

We describe a deep learning based method for estimating 3D facial expression coefficients. Unlike previous work, our process does not relay on facial landmark detection methods as a proxy step. Recent methods have shown that a CNN can be…

Computer Vision and Pattern Recognition · Computer Science 2018-02-05 Feng-Ju Chang , Anh Tuan Tran , Tal Hassner , Iacopo Masi , Ram Nevatia , Gerard Medioni

Deep neural networks (DNNs) have been used to create models for many complex analysis problems like image recognition and medical diagnosis. DNNs are a popular tool within machine learning due to their ability to model complex patterns and…

Machine Learning · Computer Science 2024-05-14 Parth Patil , Ben Boardley , Jack Gardner , Emily Loiselle , Deerajkumar Parthipan

Estimation and inference of treatment effects under unconfounded treatment assignments often suffer from bias and the `curse of dimensionality' due to the nonparametric estimation of nuisance parameters for high-dimensional confounders.…

Methodology · Statistics 2025-07-08 Zeqi Wu , Meilin Wang , Wei Huang , Zheng Zhang

Deep models for facial expression recognition achieve high performance by training on large-scale labeled data. However, publicly available datasets contain uncertain facial expressions caused by ambiguous annotations or confusing emotions,…

Computer Vision and Pattern Recognition · Computer Science 2022-12-15 Yang Liu , Xingming Zhang , Janne Kauttonen , Guoying Zhao

With the transition of facial expression recognition (FER) from laboratory-controlled to challenging in-the-wild conditions and the recent success of deep learning techniques in various fields, deep neural networks have increasingly been…

Computer Vision and Pattern Recognition · Computer Science 2020-04-20 Shan Li , Weihong Deng

Pain monitoring is essential to the quality of care for patients undergoing a medical procedure with sedation. An automated mechanism for detecting pain could improve sedation dose titration. Previous studies on facial pain detection have…

Computer Vision and Pattern Recognition · Computer Science 2022-11-15 Y. Zarghami , S. Mafeld , A. Conway , B. Taati

Benefiting from the joint learning of the multiple tasks in the deep multi-task networks, many applications have shown the promising performance comparing to single-task learning. However, the performance of multi-task learning framework is…

Computer Vision and Pattern Recognition · Computer Science 2019-11-11 Zuheng Ming , Junshi Xia , Muhammad Muzzamil Luqman , Jean-Christophe Burie , Kaixing Zhao

Automatic estimation of pain intensity from facial expressions in videos has an immense potential in health care applications. However, domain adaptation (DA) is needed to alleviate the problem of domain shifts that typically occurs between…

Computer Vision and Pattern Recognition · Computer Science 2023-09-13 Gnana Praveen R , Eric Granger , Patrick Cardinal

Background and Aim: Accurate classification of Magnetic Resonance Images (MRI) is essential to accurately predict Mild Cognitive Impairment (MCI) to Alzheimer's Disease (AD) conversion. Meanwhile, deep learning has been successfully…

Computer Vision and Pattern Recognition · Computer Science 2021-09-03 Kshitiz Shrestha , Omar Hisham Alsadoon , Abeer Alsadoon , Tarik A. Rashid , Rasha S. Ali , P. W. C. Prasad , Oday D. Jerew

Face verification is a problem approached in the literature mainly using nonlinear class-specific subspace learning techniques. While it has been shown that kernel-based Class-Specific Discriminant Analysis is able to provide excellent…

Computer Vision and Pattern Recognition · Computer Science 2018-07-06 Guanqun Cao , Alexandros Iosifidis , Moncef Gabbouj

Pain is a personal, subjective experience that is commonly evaluated through visual analog scales (VAS). While this is often convenient and useful, automatic pain detection systems can reduce pain score acquisition efforts in large-scale…

Computer Vision and Pattern Recognition · Computer Science 2017-06-27 Daniel Lopez Martinez , Ognjen Rudovic , Rosalind Picard

Deep neural networks have proved hugely successful, achieving human-like performance on a variety of tasks. However, they are also computationally expensive, which has motivated the development of model compression techniques which reduce…

Computer Vision and Pattern Recognition · Computer Science 2022-01-06 Samuil Stoychev , Hatice Gunes

Facial expression recognition (FER) methods have made great inroads in categorising moods and feelings in humans. Beyond FER, pain estimation methods assess levels of intensity in pain expressions, however assessing the quality of all…

Computer Vision and Pattern Recognition · Computer Science 2023-12-15 Shuchao Duan , Amirhossein Dadashzadeh , Alan Whone , Majid Mirmehdi

The automatic intensity estimation of facial action units (AUs) from a single image plays a vital role in facial analysis systems. One big challenge for data-driven AU intensity estimation is the lack of sufficient AU label data. Due to the…

Computer Vision and Pattern Recognition · Computer Science 2020-04-14 Xinhui Song , Tianyang Shi , Tianjia Shao , Yi Yuan , Zunlei Feng , Changjie Fan

Recent work has empirically shown that deep neural networks latch on to the Fourier statistics of training data and show increased sensitivity to Fourier-basis directions in the input. Understanding and modifying this Fourier-sensitivity of…

Computer Vision and Pattern Recognition · Computer Science 2023-02-01 Kiran Krishnamachari , See-Kiong Ng , Chuan-Sheng Foo

Transfer learning using pre-trained Convolutional Neural Networks (CNNs) has been successfully applied to images for different classification tasks. In this paper, we propose a new pipeline for pain expression recognition in neonates using…

Computer Vision and Pattern Recognition · Computer Science 2018-07-05 Ghada Zamzmi , Dmitry Goldgof , Rangachar Kasturi , Yu Sun

Accurate pain assessment is crucial in healthcare for effective diagnosis and treatment; however, traditional methods relying on self-reporting are inadequate for populations unable to communicate their pain. Cutting-edge AI is promising…

Computer Vision and Pattern Recognition · Computer Science 2024-10-16 Minh-Duc Nguyen , Hyung-Jeong Yang , Soo-Hyung Kim , Ji-Eun Shin , Seung-Won Kim

The recent research of facial expression recognition has made a lot of progress due to the development of deep learning technologies, but some typical challenging problems such as the variety of rich facial expressions and poses are still…

Computer Vision and Pattern Recognition · Computer Science 2019-07-26 Wenxuan Wang , Qiang Sun , Tao Chen , Chenjie Cao , Ziqi Zheng , Guoqiang Xu , Han Qiu , Yanwei Fu