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Emotion Recognition (ER) is the process of identifying human emotions from given data. Currently, the field heavily relies on facial expression recognition (FER) because facial expressions contain rich emotional cues. However, it is…

Computer Vision and Pattern Recognition · Computer Science 2024-11-20 Yuanyuan Liu , Lin Wei , Kejun Liu , Yibing Zhan , Zijing Chen , Zhe Chen , Shiguang Shan

Facial expressions are the most common universal forms of body language. In the past few years, automatic facial expression recognition (FER) has been an active field of research. However, it is still a challenging task due to different…

Computer Vision and Pattern Recognition · Computer Science 2021-08-23 Rauf Momin , Ali Shan Momin , Khalid Rasheed , Muhammad Saqib

Facial Expression Recognition faces two core challenges. The first is class imbalance in public datasets, which skews the learning process and weakens generalization. The second is related to privacy and data collection constraints, which…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Ali Azmoudeh , Erdi Sarıtaş , Ömer Yıldırım , Hazım Kemal Ekenel

Human emotions involve basic and compound facial expressions. However, current research on facial expression recognition (FER) mainly focuses on basic expressions, and thus fails to address the diversity of human emotions in practical…

Computer Vision and Pattern Recognition · Computer Science 2022-01-19 Xinyi Zou , Yan Yan , Jing-Hao Xue , Si Chen , Hanzi Wang

While recent advances in deep learning have led to significant improvements in facial expression classification (FEC), a major challenge that remains a bottleneck for the widespread deployment of such systems is their high architectural and…

Computer Vision and Pattern Recognition · Computer Science 2020-06-30 James Ren Hou Lee , Linda Wang , Alexander Wong

Emotion recognition promotes the evaluation and enhancement of Virtual Reality (VR) experiences by providing emotional feedback and enabling advanced personalization. However, facial expressions are rarely used to recognize users' emotions,…

Computer Vision and Pattern Recognition · Computer Science 2024-10-07 Thorben Ortmann , Qi Wang , Larissa Putzar

Deep Neural Networks (DNNs) have shown to outperform traditional methods in various visual recognition tasks including Facial Expression Recognition (FER). In spite of efforts made to improve the accuracy of FER systems using DNN, existing…

Computer Vision and Pattern Recognition · Computer Science 2020-04-17 Behzad Hasani , Mohammad H. Mahoor

This study introduces LRDif, a novel diffusion-based framework designed specifically for facial expression recognition (FER) within the context of under-display cameras (UDC). To address the inherent challenges posed by UDC's image…

Computer Vision and Pattern Recognition · Computer Science 2024-02-02 Zhifeng Wang , Kaihao Zhang , Ramesh Sankaranarayana

In face detection, low-resolution faces, such as numerous small faces of a human group in a crowded scene, are common in dense face prediction tasks. They usually contain limited visual clues and make small faces less distinguishable from…

Computer Vision and Pattern Recognition · Computer Science 2023-06-06 Guangtao Wang , Jun Li , Jie Xie , Jianhua Xu , Bo Yang

Face super-resolution (FSR) under limited computational budgets remains challenging. Existing methods often treat all facial pixels equally, leading to suboptimal resource allocation and degraded performance. CNNs are sensitive to…

Computer Vision and Pattern Recognition · Computer Science 2026-04-17 Siyu Xu , Wenjie Li , Guangwei Gao , Jian Yang , Guo-Jun Qi , Chia-Wen Lin

Facial Expression Recognition(FER) is one of the most important topic in Human-Computer interactions(HCI). In this work we report details and experimental results about a facial expression recognition method based on state-of-the-art…

Computer Vision and Pattern Recognition · Computer Science 2021-01-25 Donato Cafarelli , Fabio Valerio Massoli , Fabrizio Falchi , Claudio Gennaro , Giuseppe Amato

Building AI systems, including Facial Expression Recognition (FER), involves two critical aspects: data and model design. Both components significantly influence bias and fairness in FER tasks. Issues related to bias and fairness in FER…

Computer Vision and Pattern Recognition · Computer Science 2025-10-29 Mohammad Mehdi Hosseini , Ali Pourramezan Fard , Mohammad H. Mahoor

As artificial intelligence (AI) systems become increasingly embedded in our daily life, the ability to recognize and adapt to human emotions is essential for effective human-computer interaction. Facial expression recognition (FER) provides…

Computer Vision and Pattern Recognition · Computer Science 2025-12-16 Thibault Geoffroy , Myriam Maumy , Lionel Prevost

Facial Emotion Recognition (FER) is crucial for applications such as human-computer interaction and mental health diagnostics. This study presents the first empirical comparison of open-source Vision-Language Models (VLMs), including…

Computer Vision and Pattern Recognition · Computer Science 2025-08-20 Vamsi Krishna Mulukutla , Sai Supriya Pavarala , Srinivasa Raju Rudraraju , Sridevi Bonthu

Recently, online learning is very popular, especially under the global epidemic of COVID-19. Besides knowledge distribution, emotion interaction is also very important. It can be obtained by employing Facial Expression Recognition (FER).…

Computer Vision and Pattern Recognition · Computer Science 2025-12-09 Yi Huo , Lei Zhang

Despite substantial advances, single-image super-resolution (SISR) is always in a dilemma to reconstruct high-quality images with limited information from one input image, especially in realistic scenarios. In this paper, we establish a…

Computer Vision and Pattern Recognition · Computer Science 2023-09-12 Pengxu Wei , Yujing Sun , Xingbei Guo , Chang Liu , Jie Chen , Xiangyang Ji , Liang Lin

Although real-time facial emotion recognition is a hot topic research domain in the field of human-computer interaction, state-of the-art available datasets still suffer from various problems, such as some unrelated photos such as document…

Computer Vision and Pattern Recognition · Computer Science 2023-04-07 Rahmeh Abou Zafra , Lana Ahmad Abdullah , Rouaa Alaraj , Rasha Albezreh , Tarek Barhoum , Khloud Al Jallad

Facial Expression Recognition is a vital research topic in most fields ranging from artificial intelligence and gaming to Human-Computer Interaction (HCI) and Psychology. This paper proposes a hybrid model for Facial Expression recognition,…

Computer Vision and Pattern Recognition · Computer Science 2022-08-02 Ozioma Collins Oguine , Kanyifeechukwu Jane Oguine , Hashim Ibrahim Bisallah , Daniel Ofuani

In this paper, we present a novel benchmark for Emotion Recognition using facial landmarks extracted from realistic news videos. Traditional methods relying on RGB images are resource-intensive, whereas our approach with Facial Landmark…

Computer Vision and Pattern Recognition · Computer Science 2024-04-23 Qixuan Zhang , Zhifeng Wang , Yang Liu , Zhenyue Qin , Kaihao Zhang , Sabrina Caldwell , Tom Gedeon

Student expression recognition has become an essential tool for assessing learning experiences and emotional states. This paper introduces xLSTM-FER, a novel architecture derived from the Extended Long Short-Term Memory (xLSTM), designed to…

Computer Vision and Pattern Recognition · Computer Science 2024-10-08 Qionghao Huang , Jili Chen