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Micro-expression recognition plays a pivotal role in understanding hidden emotions and has applications across various fields. Traditional recognition methods assume access to all training data at once, but real-world scenarios involve…

Computer Vision and Pattern Recognition · Computer Science 2026-03-31 Zhengqin Lai , Xiaopeng Hong , Yabin Wang , Xiaobai Li

Recently, the recognition task of spontaneous facial micro-expressions has attracted much attention with its various real-world applications. Plenty of handcrafted or learned features have been employed for a variety of classifiers and…

Computer Vision and Pattern Recognition · Computer Science 2019-01-16 Zhaoqiang Xia , Xiaopeng Hong , Xingyu Gao , Xiaoyi Feng , Guoying Zhao

The single image super-resolution(SISR) algorithms under deep learning currently have two main models, one based on convolutional neural networks and the other based on Transformer. The former uses the stacking of convolutional layers with…

Computer Vision and Pattern Recognition · Computer Science 2024-09-25 Li Ke , Liu Yukai

When emotions are repressed, an individual's true feelings may be revealed through micro-expressions. Consequently, micro-expressions are regarded as a genuine source of insight into an individual's authentic emotions. However, the…

Computer Vision and Pattern Recognition · Computer Science 2025-05-23 Feng Liu , Bingyu Nan , Xuezhong Qian , Xiaolan Fu

Micro-expressions are spontaneous, rapid and subtle facial movements that can neither be forged nor suppressed. They are very important nonverbal communication clues, but are transient and of low intensity thus difficult to recognize.…

Computer Vision and Pattern Recognition · Computer Science 2023-04-11 Zhijun Zhai , Jianhui Zhao , Chengjiang Long , Wenju Xu , Shuangjiang He , Huijuan Zhao

In this paper, we propose a novel deep inductive transfer learning framework, named feature distribution adaptation network, to tackle the challenging multi-modal speech emotion recognition problem. Our method aims to use deep transfer…

Computer Vision and Pattern Recognition · Computer Science 2024-11-05 Shaokai Li , Yixuan Ji , Peng Song , Haoqin Sun , Wenming Zheng

This paper aims at addressing the problem of substantial performance degradation at extremely low computational cost (e.g. 5M FLOPs on ImageNet classification). We found that two factors, sparse connectivity and dynamic activation function,…

Computer Vision and Pattern Recognition · Computer Science 2021-08-21 Yunsheng Li , Yinpeng Chen , Xiyang Dai , Dongdong Chen , Mengchen Liu , Lu Yuan , Zicheng Liu , Lei Zhang , Nuno Vasconcelos

Recognizing the expressions of partially occluded faces is a challenging computer vision problem. Previous expression recognition methods, either overlooked this issue or resolved it using extreme assumptions. Motivated by the fact that the…

Computer Vision and Pattern Recognition · Computer Science 2020-05-14 Hui Ding , Peng Zhou , Rama Chellappa

In this paper, we propose a novel Convolutional Neural Network (CNN) architecture for learning multi-scale feature representations with good tradeoffs between speed and accuracy. This is achieved by using a multi-branch network, which has…

Computer Vision and Pattern Recognition · Computer Science 2019-08-01 Chun-Fu Chen , Quanfu Fan , Neil Mallinar , Tom Sercu , Rogerio Feris

Low-light image enhancement is challenging in that it needs to consider not only brightness recovery but also complex issues like color distortion and noise, which usually hide in the dark. Simply adjusting the brightness of a low-light…

Image and Video Processing · Electrical Eng. & Systems 2020-03-17 Feifan Lv , Yu Li , Feng Lu

Online knowledge distillation conducts knowledge transfer among all student models to alleviate the reliance on pre-trained models. However, existing online methods rely heavily on the prediction distributions and neglect the further…

Computer Vision and Pattern Recognition · Computer Science 2022-06-17 Panpan Zou , Yinglei Teng , Tao Niu

Facial expressions are important cues to observe human emotions. Facial expression recognition has attracted many researchers for years, but it is still a challenging topic since expression features vary greatly with the head poses,…

Computer Vision and Pattern Recognition · Computer Science 2020-09-15 S. D. Lalitha , K. K. Thyagharajan

Vision Transformer and its variants have demonstrated great potential in various computer vision tasks. But conventional vision transformers often focus on global dependency at a coarse level, which suffer from a learning challenge on…

Computer Vision and Pattern Recognition · Computer Science 2022-09-07 Yunhao Wang , Huixin Sun , Xiaodi Wang , Bin Zhang , Chao Li , Ying Xin , Baochang Zhang , Errui Ding , Shumin Han

Convolutional neural networks (CNNs) and their variations have shown effectiveness in facial expression recognition (FER). However, they face challenges when dealing with high computational complexity and multi-view head poses in real-world…

Computer Vision and Pattern Recognition · Computer Science 2025-02-11 Ali Ezati , Mohammadreza Dezyani , Rajib Rana , Roozbeh Rajabi , Ahmad Ayatollahi

Most recent multispectral object detectors employ a two-branch structure to extract features from RGB and thermal images. While the two-branch structure achieves better performance than a single-branch structure, it overlooks inference…

Computer Vision and Pattern Recognition · Computer Science 2024-09-20 Xue Zhang , Si-Yuan Cao , Fang Wang , Runmin Zhang , Zhe Wu , Xiaohan Zhang , Xiaokai Bai , Hui-Liang Shen

Micro-expressions are involuntary facial movements that cannot be consciously controlled, conveying subtle cues with substantial real-world applications. The analysis of micro-expressions generally involves two main tasks: spotting…

Computer Vision and Pattern Recognition · Computer Science 2024-09-17 Bochao Zou , Zizheng Guo , Wenfeng Qin , Xin Li , Kangsheng Wang , Huimin Ma

Micro-expressions are typically regarded as unconscious manifestations of a person's genuine emotions. However, their short duration and subtle signals pose significant challenges for downstream recognition. We propose a multi-task learning…

Computer Vision and Pattern Recognition · Computer Science 2025-04-01 Xuxiong Liu , Tengteng Dong , Fei Wang , Weijie Feng , Xiao Sun

Being spontaneous, micro-expressions are useful in the inference of a person's true emotions even if an attempt is made to conceal them. Due to their short duration and low intensity, the recognition of micro-expressions is a difficult task…

Computer Vision and Pattern Recognition · Computer Science 2022-11-24 Liangfei Zhang , Xiaopeng Hong , Ognjen Arandjelovic , Guoying Zhao

Aiming at the problems that the convolutional neural networks neglect to capture the inherent attributes of natural images and extract features only in a single scale in the field of image super-resolution reconstruction, a network…

Image and Video Processing · Electrical Eng. & Systems 2020-04-09 Jiawen Lyn , Sen Yan

Cross-database micro-expression recognition (CDMER) is one of recently emerging and interesting problem in micro-expression analysis. CDMER is more challenging than the conventional micro-expression recognition (MER), because the training…

Computer Vision and Pattern Recognition · Computer Science 2019-11-12 Yuan Zong , Tong Zhang , Wenming Zheng , Xiaopeng Hong , Chuangao Tang , Zhen Cui , Guoying Zhao