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Automatic facial expression recognition (FER) has gained much attention due to its applications in human-computer interaction. Among the approaches to improve FER tasks, this paper focuses on deep architecture with the attention mechanism.…

Computer Vision and Pattern Recognition · Computer Science 2026-03-09 Luan Pham , The Huynh Vu , Tuan Anh Tran

Researchers from a broad spectrum of scientific and engineering disciplines are increasingly using near-field infrared spectroscopic techniques to characterize materials nondestructively and with nanoscale spatial resolution. However,…

Optics · Physics 2023-03-21 Jonathan M. Larson , Hans A. Bechtel , Robert Kostecki

Recent progress in computational photography has shown that we can acquire near-infrared (NIR) information in addition to the normal visible (RGB) band, with only slight modifications to standard digital cameras. Due to the proximity of the…

Computer Vision and Pattern Recognition · Computer Science 2014-06-25 Neda Salamati , Diane Larlus , Gabriela Csurka , Sabine Süsstrunk

Training deep neural networks for image recognition often requires large-scale human annotated data. To reduce the reliance of deep neural solutions on labeled data, state-of-the-art semi-supervised methods have been proposed in the…

Computer Vision and Pattern Recognition · Computer Science 2022-08-02 Shuvendu Roy , Ali Etemad

This paper presents an novel illumination-invariant feature representation approach used to eliminate the varying illumination affection in undersampled face recognition. Firstly, a new illumination level classification technique based on…

Computer Vision and Pattern Recognition · Computer Science 2020-04-08 Yang Zhang , Changhui Hu , Xiaobo Lu

Facial Emotion Recognition (FER) is a key task in affective computing, enabling applications in human-computer interaction, e-learning, healthcare, and safety systems. Despite advances in deep learning, FER remains challenging due to…

Computer Vision and Pattern Recognition · Computer Science 2025-10-06 Ahsan Farabi , Israt Khandaker , Ibrahim Khalil Shanto , Md Abdul Ahad Minhaz , Tanisha Zaman

Heterogeneous Face Recognition (HFR) aims at matching face images captured across different sensing modalities, such as thermal-to-visible or near-infrared-to-visible, enhancing the usability of face recognition systems in challenging…

Computer Vision and Pattern Recognition · Computer Science 2026-05-07 Anjith George , Sebastien Marcel

Deep learning-based methods have been the key driving force behind much of the recent success of facial expression recognition (FER) systems. However, the need for large amounts of labelled data remains a challenge. Semi-supervised learning…

Computer Vision and Pattern Recognition · Computer Science 2024-11-25 Shuvendu Roy , Ali Etemad

Facial Expression Recognition (FER) is a classification task that points to face variants. Hence, there are certain affinity features between facial expressions, receiving little attention in the FER literature. Convolution padding, despite…

Computer Vision and Pattern Recognition · Computer Science 2021-10-12 Jiawei Shi , Songhao Zhu , Zhiwei Liang

Facial expression recognition (FER) is still one challenging research due to the small inter-class discrepancy in the facial expression data. In view of the significance of facial crucial regions for FER, many existing researches utilize…

Computer Vision and Pattern Recognition · Computer Science 2024-04-02 Guanghui Shi , Shasha Mao , Shuiping Gou , Dandan Yan , Licheng Jiao , Lin Xiong

Heterogeneous face recognition (HFR) involves the intricate task of matching face images across the visual domains of visible (VIS) and near-infrared (NIR). While much of the existing literature on HFR identifies the domain gap as a primary…

Computer Vision and Pattern Recognition · Computer Science 2023-12-04 Michail Tarasiou , Jiankang Deng , Stefanos Zafeiriou

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

Heterogeneous Face Recognition (HFR) addresses the challenge of matching face images across different sensing modalities, such as thermal to visible or near-infrared to visible, expanding the applicability of face recognition systems in…

Computer Vision and Pattern Recognition · Computer Science 2025-04-29 Anjith George , Sebastien Marcel

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

We propose INFAMOUS-NeRF, an implicit morphable face model that introduces hypernetworks to NeRF to improve the representation power in the presence of many training subjects. At the same time, INFAMOUS-NeRF resolves the classic…

Computer Vision and Pattern Recognition · Computer Science 2023-12-29 Andrew Hou , Feng Liu , Zhiyuan Ren , Michel Sarkis , Ning Bi , Yiying Tong , Xiaoming Liu

Previous methods for dynamic facial expression recognition (DFER) in the wild are mainly based on Convolutional Neural Networks (CNNs), whose local operations ignore the long-range dependencies in videos. Transformer-based methods for DFER…

Computer Vision and Pattern Recognition · Computer Science 2023-05-08 Fuyan Ma , Bin Sun , Shutao Li

Existing single-image denoising algorithms often struggle to restore details when dealing with complex noisy images. The introduction of near-infrared (NIR) images offers new possibilities for RGB image denoising. However, due to the…

Computer Vision and Pattern Recognition · Computer Science 2025-03-25 Yuchen Wang , Hongyuan Wang , Lizhi Wang , Xin Wang , Lin Zhu , Wanxuan Lu , Hua Huang

Hyperspectral imaging captures both spectral and spatial information from a sample. The near infrared (NIR, > 800 nm) is advantageous for biomedical imaging as it falls into the tissue transparency window but also contains vibrational…

Convolutional neural networks (CNNs) can automatically learn data patterns to express face images for facial expression recognition (FER). However, they may ignore effect of facial segmentation of FER. In this paper, we propose a perception…

Computer Vision and Pattern Recognition · Computer Science 2025-12-09 Chunwei Tian , Jingyuan Xie , Lingjun Li , Wangmeng Zuo , Yanning Zhang , David Zhang

Facial expression recognition (FER) systems in low-resolution settings face significant challenges in accurately identifying expressions due to the loss of fine-grained facial details. This limitation is especially problematic for…

Computer Vision and Pattern Recognition · Computer Science 2025-02-17 Syed Sameen Ahmad Rizvi , Soham Kumar , Aryan Seth , Pratik Narang
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