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State-space models provide an important body of techniques for analyzing time-series, but their use requires estimating unobserved states. The optimal estimate of the state is its conditional expectation given the observation histories, and…

Personalization in emotion recognition (ER) is essential for an accurate interpretation of subtle and subject-specific expressive patterns. Recent advances in vision-language models (VLMs) such as CLIP demonstrate strong potential for…

Computer Vision and Pattern Recognition · Computer Science 2026-04-01 Muhammad Osama Zeeshan , Masoumeh Sharafi , Benoît Savary , Alessandro Lameiras Koerich , Marco Pedersoli , Eric Granger

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

To overcome the limitations of convolutional neural network in the process of facial expression recognition, a facial expression recognition model Capsule-LSTM based on video frame sequence is proposed. This model is composed of three…

Computer Vision and Pattern Recognition · Computer Science 2021-06-15 Siwei Liu , Yuanpeng Long , Gao Xu , Lijia Yang , Shimei Xu , Xiaoming Yao , Kunxian Shu

Facial Action Units (AU) is a vital concept in the realm of affective computing, and AU detection has always been a hot research topic. Existing methods suffer from overfitting issues due to the utilization of a large number of learnable…

Computer Vision and Pattern Recognition · Computer Science 2024-07-10 Kaishen Yuan , Zitong Yu , Xin Liu , Weicheng Xie , Huanjing Yue , Jingyu Yang

We introduce ViewNeRF, a Neural Radiance Field-based viewpoint estimation method that learns to predict category-level viewpoints directly from images during training. While NeRF is usually trained with ground-truth camera poses, multiple…

Computer Vision and Pattern Recognition · Computer Science 2022-12-02 Octave Mariotti , Oisin Mac Aodha , Hakan Bilen

Detecting facial action units (AU) is one of the fundamental steps in automatic recognition of facial expression of emotions and cognitive states. Though there have been a variety of approaches proposed for this task, most of these models…

Computer Vision and Pattern Recognition · Computer Science 2019-11-28 Mihee Lee , Ognjen Rudovic , Vladimir Pavlovic , Maja Pantic

Traditional techniques for emotion recognition have focused on the facial expression analysis only, thus providing limited ability to encode context that comprehensively represents the emotional responses. We present deep networks for…

Computer Vision and Pattern Recognition · Computer Science 2019-08-19 Jiyoung Lee , Seungryong Kim , Sunok Kim , Jungin Park , Kwanghoon Sohn

This paper proposes a feature-based domain adaptation technique for identifying emotions in generic images, encompassing both facial and non-facial objects, as well as non-human components. This approach addresses the challenge of the…

Computer Vision and Pattern Recognition · Computer Science 2025-02-19 Puneet Kumar , Balasubramanian Raman

In recent years, deep learning has achieved innovative advancements in various fields, including the analysis of human emotions and behaviors. Initiatives such as the Affective Behavior Analysis in-the-wild (ABAW) competition have been…

Computer Vision and Pattern Recognition · Computer Science 2024-08-06 Seongjae Min , Junseok Yang , Sangjun Lim , Junyong Lee , Sangwon Lee , Sejoon Lim

Object detection is one of the most active areas in computer vision, which has made significant improvement in recent years. Current state-of-the-art object detection methods mostly adhere to the framework of regions with convolutional…

Computer Vision and Pattern Recognition · Computer Science 2016-04-15 Wenqing Chu , Deng Cai

Facial action units (AUs) play an indispensable role in human emotion analysis. We observe that although AU-based high-level emotion analysis is urgently needed by real-world applications, frame-level AU results provided by previous works…

Computer Vision and Pattern Recognition · Computer Science 2023-05-12 Yingjie Chen , Jiarui Zhang , Tao Wang , Yun Liang

Emotion Recognition in Conversation (ERC) is essential for effective human-machine interaction, aiming to identify speakers' emotional states in multi-turn dialogues. Early text-based methods struggle with complex scenarios like sarcasm…

Artificial Intelligence · Computer Science 2026-05-19 Linan ZHU , Zihao Zhai , Xiao Han , Yuqian Fu , Xiangfan Chen , Xiangjie Kong , Guojiang Shen

Emotion recognition (ER) from facial images is one of the landmark tasks in affective computing with major developments in the last decade. Initial efforts on ER relied on handcrafted features that were used to characterize facial images…

Computer Vision and Pattern Recognition · Computer Science 2021-09-09 Fernanda Hernández-Luquin , Hugo Jair Escalante

Facial expression recognition is an essential task for various applications, including emotion detection, mental health analysis, and human-machine interactions. In this paper, we propose a multi-modal facial expression recognition method…

Computer Vision and Pattern Recognition · Computer Science 2023-03-21 Jun-Hwa Kim , Namho Kim , Chee Sun Won

Dynamic facial expression recognition (DFER) infers emotions from the temporal evolution of expressions, unlike static facial expression recognition (SFER), which relies solely on a single snapshot. This temporal analysis provides richer…

Computer Vision and Pattern Recognition · Computer Science 2025-10-31 Yin Chen , Jia Li , Yu Zhang , Zhenzhen Hu , Shiguang Shan , Meng Wang , Richang Hong

Correlation filters are special classifiers designed for shift-invariant object recognition, which are robust to pattern distortions. The recent literature shows that combining a set of sub-filters trained based on a single or a small group…

Computer Vision and Pattern Recognition · Computer Science 2018-02-14 Baochang Zhang , Shangzhen Luan , Chen Chen , Jungong Han , Wei Wang , Alessandro Perina , Ling Shao

Facial Expression Recognition (FER) plays a crucial role in computer vision and finds extensive applications across various fields. This paper aims to present our approach for the upcoming 6th Affective Behavior Analysis in-the-Wild (ABAW)…

Computer Vision and Pattern Recognition · Computer Science 2024-03-20 Jun Yu , Zhihong Wei , Zhongpeng Cai , Gongpeng Zhao , Zerui Zhang , Yongqi Wang , Guochen Xie , Jichao Zhu , Wangyuan Zhu

Studies have proven that domain bias and label bias exist in different Facial Expression Recognition (FER) datasets, making it hard to improve the performance of a specific dataset by adding other datasets. For the FER bias issue, recent…

Computer Vision and Pattern Recognition · Computer Science 2022-11-15 Shuyi Mao , Xinpeng Li , Qingyang Wu , Xiaojiang Peng

Affective computing has been largely limited in terms of available data resources. The need to collect and annotate diverse in-the-wild datasets has become apparent with the rise of deep learning models, as the default approach to address…

Computer Vision and Pattern Recognition · Computer Science 2019-10-14 Dimitrios Kollias , Stefanos Zafeiriou