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The human face conveys a significant amount of information. Through facial expressions, the face is able to communicate numerous sentiments without the need for verbalisation. Visual emotion recognition has been extensively studied.…

Computer Vision and Pattern Recognition · Computer Science 2022-01-20 Liam Schoneveld , Alice Othmani

Automated facial expression analysis has a variety of applications in human-computer interaction. Traditional methods mainly analyze prototypical facial expressions of no more than eight discrete emotions as a classification task. However,…

Computer Vision and Pattern Recognition · Computer Science 2018-05-04 Feng Zhou , Shu Kong , Charless Fowlkes , Tao Chen , Baiying Lei

Recently, event cameras have shown large applicability in several computer vision fields especially concerning tasks that require high temporal resolution. In this work, we investigate the usage of such kind of data for emotion recognition…

Computer Vision and Pattern Recognition · Computer Science 2023-04-14 Lorenzo Berlincioni , Luca Cultrera , Chiara Albisani , Lisa Cresti , Andrea Leonardo , Sara Picchioni , Federico Becattini , Alberto Del Bimbo

Facial expression recognition is a challenging task due to two major problems: the presence of inter-subject variations in facial expression recognition dataset and impure expressions posed by human subjects. In this paper we present a…

Computer Vision and Pattern Recognition · Computer Science 2019-10-15 Kamran Ali , Ilkin Isler , Charles Hughes

Compared with the image-based static facial expression recognition (SFER) task, the dynamic facial expression recognition (DFER) task based on video sequences is closer to the natural expression recognition scene. However, DFER is often…

Computer Vision and Pattern Recognition · Computer Science 2022-08-23 Hanting Li , Hongjing Niu , Zhaoqing Zhu , Feng Zhao

Emotional Artificial Intelligences are currently one of the most anticipated developments of AI. If successful, these AIs will be classified as one of the most complex, intelligent nonhuman entities as they will possess sentience, the…

Machine Learning · Computer Science 2023-10-17 Ashley Jisue Hong , David DiStefano , Sejal Dua

In this paper, an effective pipeline to automatic 4D Facial Expression Recognition (4D FER) is proposed. It combines two growing but disparate ideas in Computer Vision -- computing the spatial facial deformations using tools from Riemannian…

Computer Vision and Pattern Recognition · Computer Science 2021-05-07 Qingkai Zhen , Di Huang , Yunhong Wang , Hassen Drira , Boulbaba Ben Amor , Mohamed Daoudi

Expressing and identifying emotions through facial and physical expressions is a significant part of social interaction. Emotion recognition is an essential task in computer vision due to its various applications and mainly for allowing a…

Computer Vision and Pattern Recognition · Computer Science 2021-12-15 Willams Costa , David Macêdo , Cleber Zanchettin , Lucas S. Figueiredo , Veronica Teichrieb

Multi-view facial expression recognition (FER) is a challenging task because the appearance of an expression varies in poses. To alleviate the influences of poses, recent methods either perform pose normalization or learn separate FER…

Computer Vision and Pattern Recognition · Computer Science 2019-05-27 Yuanyuan Liu , Jiyao Peng , Jiabei Zeng , Shiguang Shan

This paper presents a lightweight algorithm for feature extraction, classification of seven different emotions, and facial expression recognition in a real-time manner based on static images of the human face. In this regard, a Multi-Layer…

Computer Vision and Pattern Recognition · Computer Science 2022-02-02 Mohammad Amin Haghpanah , Ehsan Saeedizade , Mehdi Tale Masouleh , Ahmad Kalhor

Micro-Expression Recognition has become challenging, as it is extremely difficult to extract the subtle facial changes of micro-expressions. Recently, several approaches proposed several expression-shared features algorithms for…

Computer Vision and Pattern Recognition · Computer Science 2021-01-14 Ling Zhou , Qirong Mao , Xiaohua Huang , Feifei Zhang , Zhihong Zhang

Facial Expression Recognition (FER) is an important task in computer vision and has wide applications in human-computer interaction, intelligent security, emotion analysis, and other fields. However, the limited size of FER datasets limits…

Computer Vision and Pattern Recognition · Computer Science 2023-03-21 Jun Yu , Zhongpeng Cai , Renda Li , Gongpeng Zhao , Guochen Xie , Jichao Zhu , Wangyuan Zhu

Efficient data compression is crucial for the storage and transmission of visual data. However, in facial expression recognition (FER) tasks, lossy compression often leads to feature degradation and reduced accuracy. To address these…

Computer Vision and Pattern Recognition · Computer Science 2025-09-23 Xiumei Li , Marc Windsheimer , Misha Sadeghi , Björn Eskofier , André Kaup

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

Facial Expression Recognition (FER) uses images of faces to identify the emotional state of users, allowing for a closer interaction between humans and autonomous systems. Unfortunately, as the images naturally integrate some demographic…

Computer Vision and Pattern Recognition · Computer Science 2024-02-07 Iris Dominguez-Catena , Daniel Paternain , Mikel Galar

Facial expression classification is a kind of image classification and it has received much attention, in recent years. There are many approaches to solve these problems with aiming to increase efficient classification. One of famous…

Computer Vision and Pattern Recognition · Computer Science 2011-07-19 Thai Le , Phat Tat , Hai Tran

We present a Fourier-based machine learning technique that characterizes and detects facial emotions. The main challenging task in the development of machine learning (ML) models for classifying facial emotions is the detection of accurate…

Computer Vision and Pattern Recognition · Computer Science 2021-12-07 Aishwarya Gouru , Shan Suthaharan

Race classification is a long-standing challenge in the field of face image analysis. The investigation of salient facial features is an important task to avoid processing all face parts. Face segmentation strongly benefits several face…

Computer Vision and Pattern Recognition · Computer Science 2021-04-07 Khalil Khan , Jehad Ali , Irfan Uddin , Sahib Khan , Byeong-hee Roh

Facial expression recognition is an important research direction in the field of artificial intelligence. Although new breakthroughs have been made in recent years, the uneven distribution of datasets and the similarity between different…

Computer Vision and Pattern Recognition · Computer Science 2025-04-15 Bingyu Nan , Feng Liu , Xuezhong Qian , Wei Song

Facial expression has a significant role in analyzing human cognitive state. Deriving an accurate facial appearance representation is a critical task for an automatic facial expression recognition application. This paper provides a new…

Computer Vision and Pattern Recognition · Computer Science 2018-07-25 Monu Verma , Prafulla Saxena , Santosh. K. Vipparthi , Gridhari Singh