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Dataset pruning reduces the storage and training costs of deep learning by selecting an informative subset from a large dataset. However, most existing pruning methods require fully labeled data, which limits their applicability in…

Machine Learning · Computer Science 2026-05-25 Yeseul Cho , Baekrok Shin , Changmin Kang , Chulhee Yun

Facial action units allow an objective, standardized description of facial micro movements which can be used to describe emotions in human faces. Annotating data for action units is an expensive and time-consuming task, which leads to a…

Computer Vision and Pattern Recognition · Computer Science 2020-08-18 Jaspar Pahl , Ines Rieger , Dominik Seuss

Face recognition has witnessed great progress in recent years, mainly attributed to the high-capacity model designed and the abundant labeled data collected. However, it becomes more and more prohibitive to scale up the current…

Computer Vision and Pattern Recognition · Computer Science 2019-01-03 Xiaohang Zhan , Ziwei Liu , Junjie Yan , Dahua Lin , Chen Change Loy

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

Facial Expression Recognition (FER) from videos is a crucial task in various application areas, such as human-computer interaction and health diagnosis and monitoring (e.g., assessing pain and depression). Beyond the challenges of…

Computer Vision and Pattern Recognition · Computer Science 2025-06-02 Masoumeh Sharafi , Emma Ollivier , Muhammad Osama Zeeshan , Soufiane Belharbi , Marco Pedersoli , Alessandro Lameiras Koerich , Simon Bacon , Eric Granger

The success of deep learning methods in medical image segmentation tasks heavily depends on a large amount of labeled data to supervise the training. On the other hand, the annotation of biomedical images requires domain knowledge and can…

Computer Vision and Pattern Recognition · Computer Science 2021-09-30 Xinrong Hu , Dewen Zeng , Xiaowei Xu , Yiyu Shi

We propose a self-supervised contrastive learning approach for facial expression recognition (FER) in videos. We propose a novel temporal sampling-based augmentation scheme to be utilized in addition to standard spatial augmentations used…

Computer Vision and Pattern Recognition · Computer Science 2021-08-09 Shuvendu Roy , Ali Etemad

Synthetic data has emerged as a promising alternative for training face recognition (FR) models, offering advantages in scalability, privacy compliance, and potential for bias mitigation. However, critical questions remain on whether both…

Computer Vision and Pattern Recognition · Computer Science 2025-07-29 Pavel Korshunov , Ketan Kotwal , Christophe Ecabert , Vidit Vidit , Amir Mohammadi , Sebastien Marcel

Facial Expression Recognition has a wide application prospect in social robotics, health care, driver fatigue monitoring, and many other practical scenarios. Automatic recognition of facial expressions has been extensively studied by the…

Computer Vision and Pattern Recognition · Computer Science 2024-11-27 Zijian Li , Yan Wang , Bowen Guan , JianKai Yin

Medical image segmentation is clinically important, yet data privacy and the cost of expert annotation limit the availability of labeled data. Federated semi-supervised learning (FSSL) offers a solution but faces two challenges:…

Computer Vision and Pattern Recognition · Computer Science 2025-11-19 Sahar Nasirihaghighi , Negin Ghamsarian , Yiping Li , Marcel Breeuwer , Raphael Sznitman , Klaus Schoeffmann

Multi-label feature selection (FS) reduces the dimensionality of multi-label data by removing irrelevant, noisy, and redundant features, thereby boosting the performance of multi-label learning models. However, existing methods typically…

Machine Learning · Computer Science 2025-11-25 Afsaneh Mahanipour , Hana Khamfroush

As various databases of facial expressions have been made accessible over the last few decades, the Facial Expression Recognition (FER) task has gotten a lot of interest. The multiple sources of the available databases raised several…

Computer Vision and Pattern Recognition · Computer Science 2021-07-19 Mouath Aouayeb , Wassim Hamidouche , Catherine Soladie , Kidiyo Kpalma , Renaud Seguier

Facial expression recognition (FER) is a topic attracting significant research in both psychology and machine learning with a wide range of applications. Despite a wealth of research on human FER and considerable progress in computational…

Computer Vision and Pattern Recognition · Computer Science 2021-10-12 Serin Park , Christian Wallraven

Image recognition techniques heavily rely on abundant labeled data, particularly in medical contexts. Addressing the challenges associated with obtaining labeled data has led to the prominence of self-supervised learning and semi-supervised…

Computer Vision and Pattern Recognition · Computer Science 2024-04-17 Hao Feng , Yuanzhe Jia , Ruijia Xu , Mukesh Prasad , Ali Anaissi , Ali Braytee

In recent years, semi-supervised learning (SSL) has shown tremendous success in leveraging unlabeled data to improve the performance of deep learning models, which significantly reduces the demand for large amounts of labeled data. Many SSL…

Machine Learning · Computer Science 2020-06-02 Song-Bo Yang , Tian-li Yu

Facial Expression Recognition (FER) is vital for understanding interpersonal communication. However, existing classification methods often face challenges such as vulnerability to noise, imbalanced datasets, overfitting, and generalization…

Computer Vision and Pattern Recognition · Computer Science 2024-07-03 Hozaifa Kassab , Mohamed Bahaa , Ali Hamdi

Facial expression is an essential factor in conveying human emotional states and intentions. Although remarkable advancement has been made in facial expression recognition (FER) task, challenges due to large variations of expression…

Computer Vision and Pattern Recognition · Computer Science 2022-07-28 Jie Lei , Zhao Liu , Zeyu Zou , Tong Li , Xu Juan , Shuaiwei Wang , Guoyu Yang , Zunlei Feng

Deep convolutional neural networks (CNNs) have greatly improved the Face Recognition (FR) performance in recent years. Almost all CNNs in FR are trained on the carefully labeled datasets containing plenty of identities. However, such…

Computer Vision and Pattern Recognition · Computer Science 2018-03-28 Wei Hu , Yangyu Huang , Fan Zhang , Ruirui Li , Wei Li , Guodong Yuan

Traditional supervised learning methods have historically encountered certain constraints in medical image segmentation due to the challenging collection process, high labeling cost, low signal-to-noise ratio, and complex features…

Computer Vision and Pattern Recognition · Computer Science 2024-02-20 Yifei Chen , Chenyan Zhang , Yifan Ke , Yiyu Huang , Xuezhou Dai , Feiwei Qin , Yongquan Zhang , Xiaodong Zhang , Changmiao Wang

Facial Expression Recognition (FER) in the wild is still challenging due to uncontrolled variations in pose, occlusion, and illumination. Most existing attention-based methods primarily rely on visual appearance cues, suffering from…

Computer Vision and Pattern Recognition · Computer Science 2026-05-20 Jiaxin Wang , Muwei Jian , Hui Yu , Junyu Dong , Yifan Xia