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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

With the acceleration of the pace of work and life, people have to face more and more pressure, which increases the possibility of suffering from depression. However, many patients may fail to get a timely diagnosis due to the serious…

Signal Processing · Electrical Eng. & Systems 2021-06-02 Lang He , Mingyue Niu , Prayag Tiwari , Pekka Marttinen , Rui Su , Jiewei Jiang , Chenguang Guo , Hongyu Wang , Songtao Ding , Zhongmin Wang , Wei Dang , Xiaoying Pan

Automated pain assessment from facial expressions is crucial for non-communicative patients, such as those with dementia. Progress has been limited by two challenges: (i) existing datasets exhibit severe demographic and label imbalance due…

Computer Vision and Pattern Recognition · Computer Science 2026-01-15 Xin Lei Lin , Soroush Mehraban , Abhishek Moturu , Babak Taati

The World Health Organization (WHO) has recommended wearing face masks as one of the most effective measures to prevent COVID-19 transmission. In many countries, it is now mandatory to wear face masks, specially in public places. Since…

Computer Vision and Pattern Recognition · Computer Science 2021-12-16 Junaed Younus Khan , Md Abdullah Al Alamin

Purpose: Accurate detection and 6D pose estimation of surgical instruments are crucial for many computer-assisted interventions. However, supervised methods lack flexibility for new or unseen tools and require extensive annotated data. This…

Computer Vision and Pattern Recognition · Computer Science 2026-03-27 Jonas Hein , Lilian Calvet , Matthias Seibold , Siyu Tang , Marc Pollefeys , Philipp Fürnstahl

Purpose: Face detection is a needed component for the automatic analysis and assistance of human activities during surgical procedures. Efficient face detection algorithms can indeed help to detect and identify the persons present in the…

Computer Vision and Pattern Recognition · Computer Science 2019-06-13 Thibaut Issenhuth , Vinkle Srivastav , Afshin Gangi , Nicolas Padoy

Occlusion poses a great threat to monocular multi-person 3D human pose estimation due to large variability in terms of the shape, appearance, and position of occluders. While existing methods try to handle occlusion with pose…

Computer Vision and Pattern Recognition · Computer Science 2022-08-02 Qihao Liu , Yi Zhang , Song Bai , Alan Yuille

The limited capacity to recognize faces under occlusions is a long-standing problem that presents a unique challenge for face recognition systems and even for humans. The problem regarding occlusion is less covered by research when compared…

Computer Vision and Pattern Recognition · Computer Science 2020-06-23 Dan Zeng , Raymond Veldhuis , Luuk Spreeuwers

Automated facial identification and facial expression recognition have been topics of active research over the past few decades. Facial and expression recognition find applications in human-computer interfaces, subject tracking, real-time…

Computer Vision and Pattern Recognition · Computer Science 2016-10-25 Sohini Roychowdhury , Michelle Emmons

Wearing a mask is a strong protection against the COVID-19 pandemic, even though the vaccine has been successfully developed and is widely available. However, many people wear them incorrectly. This observation prompts us to devise an…

Computer Vision and Pattern Recognition · Computer Science 2021-08-25 Yixin Hu , Xingyu Li

This research presents a novel multimodal data fusion methodology for pain behavior recognition, integrating statistical correlation analysis with human-centered insights. Our approach introduces two key innovations: 1) integrating…

Artificial Intelligence · Computer Science 2025-01-22 Xingrui Gu , Zhixuan Wang , Irisa Jin , Zekun Wu

Machine learning (ML) models trained on subjective self-report scores struggle to objectively classify pain accurately due to the significant variance between real-time pain experiences and recorded scores afterwards. This study developed…

Machine Learning · Computer Science 2023-08-03 Boluwatife E. Faremi , Jonathon Stavres , Nuno Oliveira , Zhaoxian Zhou , Andrew H. Sung

In this paper, we explore the possibility to apply machine learning to make diagnostic predictions using discomfort drawings. A discomfort drawing is an intuitive way for patients to express discomfort and pain related symptoms. These…

Machine Learning · Computer Science 2016-12-06 Cheng Zhang , Hedvig Kjellstrom , Bo C. Bertilson

We present a glasses type wearable device to detect emotions from a human face in an unobtrusive manner. The device is designed to gather multi channel responses from the user face naturally and continuously while the user is wearing it.…

Human-Computer Interaction · Computer Science 2024-10-30 Jangho Kwon , Laehyun Kim

Generic face detection algorithms do not perform very well in the mobile domain due to significant presence of occluded and partially visible faces. One promising technique to handle the challenge of partial faces is to design face…

Computer Vision and Pattern Recognition · Computer Science 2018-07-19 Upal Mahbub , Sayantan Sarkar , Rama Chellappa

Emotion recognition,as a step toward mind reading,seeks to infer internal states from external cues.Most existing methods rely on explicit signals-such as facial expressions,speech,or gestures-that reflect only bodily responses and overlook…

Computer Vision and Pattern Recognition · Computer Science 2025-07-18 Mengke Song , Yuge Xie , Qi Cui , Luming Li , Xinyu Liu , Guotao Wang , Chenglizhao Chen , Shanchen Pang

We provide a new non-invasive, easy-to-scale for large amounts of subjects and a remotely accessible method for (hidden) emotion detection from videos of human faces. Our approach combines face manifold detection for accurate location of…

Computer Vision and Pattern Recognition · Computer Science 2022-11-02 Juni Kim , Zhikang Dong , Eric Guan , Judah Rosenthal , Shi Fu , Miriam Rafailovich , Pawel Polak

Contactless and efficient systems are implemented rapidly to advocate preventive methods in the fight against the COVID-19 pandemic. Despite the positive benefits of such systems, there is potential for exploitation by invading user…

Computer Vision and Pattern Recognition · Computer Science 2022-03-24 Sachith Seneviratne , Nuran Kasthuriarachchi , Sanka Rasnayaka , Danula Hettiachchi , Ridwan Shariffdeen

One of the most common problems encountered in human-computer interaction is automatic facial expression recognition. Although it is easy for human observer to recognize facial expressions, automatic recognition remains difficult for…

Computer Vision and Pattern Recognition · Computer Science 2021-09-14 Mohamad Roshanzamir , Roohallah Alizadehsani , Mahdi Roshanzamir , Afshin Shoeibi , Juan M. Gorriz , Abbas Khosrave , Saeid Nahavandi

In this paper, we present SAFER, a novel system for emotion recognition from facial expressions. It employs state-of-the-art deep learning techniques to extract various features from facial images and incorporates contextual information,…

Computer Vision and Pattern Recognition · Computer Science 2023-06-19 Mijanur Palash , Bharat Bhargava