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Facial micro-expressions are brief, involuntary facial movements that reveal hidden emotions. Most Micro-Expression Recognition (MER) methods that rely on optical flow typically focus on the onset-to-apex phase, neglecting the…

Computer Vision and Pattern Recognition · Computer Science 2025-11-18 Vu Tram Anh Khuong , Thi Bich Phuong Man , Luu Tu Nguyen , Thanh Ha Le , Thi Duyen Ngo

Facial Expressions Recognition(FER) on low-resolution images is necessary for applications like group expression recognition in crowd scenarios(station, classroom etc.). Classifying a small size facial image into the right expression…

Computer Vision and Pattern Recognition · Computer Science 2020-04-07 Wei Jing , Feng Tian , Jizhong Zhang , Kuo-Ming Chao , Zhenxin Hong , Xu Liu

Facial expression synthesis aims to generate realistic facial expressions while preserving identity. Existing conditional generative adversarial networks (GANs) achieve excellent image-to-image translation results, but their performance…

Computer Vision and Pattern Recognition · Computer Science 2026-03-18 Arbish Akram , Nazar Khan , Arif Mahmood

Facial expression is the most natural means for human beings to communicate their emotions. Most facial expression analysis studies consider the case of acted expressions. Spontaneous facial expression recognition is significantly more…

Computer Vision and Pattern Recognition · Computer Science 2018-10-02 Dawood Al Chanti , Alice Caplier

Affective computing faces a major challenge: the lack of high-quality, diverse depth facial datasets for recognizing subtle emotional expressions. We propose a framework for synthetic depth face generation using an optimized GAN with…

Computer Vision and Pattern Recognition · Computer Science 2025-08-14 Seyed Muhammad Hossein Mousavi , S. Younes Mirinezhad

This study investigates the efficacy of facial micro-expressions as a soft biometric for enhancing person recognition, aiming to broaden the understanding of the subject and its potential applications. We propose a deep learning approach…

Computer Vision and Pattern Recognition · Computer Science 2023-06-27 Tuval Kay , Yuval Ringel , Khen Cohen , Mor-Avi Azulay , David Mendlovic

Facial micro-expression recognition (MER) is a challenging task, due to the transience, subtlety, and dynamics of micro-expressions (MEs). Most existing methods resort to hand-crafted features or deep networks, in which the former often…

Computer Vision and Pattern Recognition · Computer Science 2025-09-12 Zhiwen Shao , Yifan Cheng , Fan Zhang , Xuehuai Shi , Canlin Li , Lizhuang Ma , Dit-yan Yeung

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-expressions are spontaneous, unconscious facial movements that show people's true inner emotions and have great potential in related fields of psychological testing. Since the face is a 3D deformation object, the occurrence of an…

Computer Vision and Pattern Recognition · Computer Science 2022-04-21 Fengping Wang , Jie Li , Siqi Zhang , Chun Qi , Yun Zhang , Danmin Miao

The advance of Generative Adversarial Networks (GANs) enables realistic face image synthesis. However, synthesizing face images that preserve facial identity as well as have high diversity within each identity remains challenging. To…

Computer Vision and Pattern Recognition · Computer Science 2018-12-05 Yujun Shen , Bolei Zhou , Ping Luo , Xiaoou Tang

Affective computing and cognitive theory are widely used in modern human-computer interaction scenarios. Human faces, as the most prominent and easily accessible features, have attracted great attention from researchers. Since humans have…

Computer Vision and Pattern Recognition · Computer Science 2020-01-20 Wenxuan Wang , Yanwei Fu , Qiang Sun , Tao Chen , Chenjie Cao , Ziqi Zheng , Guoqiang Xu , Han Qiu , Yu-Gang Jiang , Xiangyang Xue

Micro-expressions are brief spontaneous facial expressions that appear on a face when a person conceals an emotion, making them different to normal facial expressions in subtlety and duration. Currently, emotion classes within the CASME II…

Computer Vision and Pattern Recognition · Computer Science 2017-12-05 Adrian K. Davison , Walied Merghani , Moi Hoon Yap

The face expression is the first thing we pay attention to when we want to understand a person's state of mind. Thus, the ability to recognize facial expressions in an automatic way is a very interesting research field. In this paper,…

Computer Vision and Pattern Recognition · Computer Science 2024-02-16 Enrico Randellini , Leonardo Rigutini , Claudio Sacca'

Last-generation GAN models allow to generate synthetic images which are visually indistinguishable from natural ones, raising the need to develop tools to distinguish fake and natural images thus contributing to preserve the trustworthiness…

Computer Vision and Pattern Recognition · Computer Science 2020-10-05 Mauro Barni , Kassem Kallas , Ehsan Nowroozi , Benedetta Tondi

Critical obstacles in training classifiers to detect facial actions are the limited sizes of annotated video databases and the relatively low frequencies of occurrence of many actions. To address these problems, we propose an approach that…

Computer Vision and Pattern Recognition · Computer Science 2020-10-22 Koichiro Niinuma , Itir Onal Ertugrul , Jeffrey F Cohn , László A Jeni

Micro-expression, for its high objectivity in emotion detection, has emerged to be a promising modality in affective computing. Recently, deep learning methods have been successfully introduced into the micro-expression recognition area.…

Computer Vision and Pattern Recognition · Computer Science 2019-08-28 Chongyang Wang , Min Peng , Tao Bi , Tong Chen

Facial micro-expressions are very brief, spontaneous facial expressions that appear on the face of humans when they either deliberately or unconsciously conceal an emotion. Micro-expression has shorter duration than macro-expression, which…

Computer Vision and Pattern Recognition · Computer Science 2018-05-08 Walied Merghani , Adrian K. Davison , Moi Hoon Yap

A wealth of angle problems occur when facial recognition is performed: At present, the feature extraction network presents eigenvectors with large differences between the frontal face and profile face recognition of the same person in many…

Computer Vision and Pattern Recognition · Computer Science 2020-03-23 Xinyu Zhang , Yang Zhao , Hao Zhang

The use of beauty filters on social media, which enhance the appearance of individuals in images, is a well-researched area, with existing methods proving to be highly effective. Traditionally, such enhancements are performed using…

Computer Vision and Pattern Recognition · Computer Science 2025-01-03 Erik Nguyen , Spencer Htin

Generating high fidelity identity-preserving faces with different facial attributes has a wide range of applications. Although a number of generative models have been developed to tackle this problem, there is still much room for further…

Computer Vision and Pattern Recognition · Computer Science 2021-11-08 Dan Ma , Bin Liu , Zhao Kang , Jiayu Zhou , Jianke Zhu , Zenglin Xu