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Collaborative game-based learning environments offer rich opportunities for small-group knowledge construction, yet automatically predicting student collaboration satisfaction remains challenging. A critical barrier is modality degradation:…

Machine Learning · Computer Science 2026-05-19 Wen-Hsin Tsai , Chia-Ming Lee , Yuk-Ying Tung

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

Affective Behavior Analysis aims to develop emotionally intelligent technology that can recognize and respond to human emotions. To advance this field, the 7th Affective Behavior Analysis in-the-wild (ABAW) competition holds the Multi-Task…

Computer Vision and Pattern Recognition · Computer Science 2025-03-14 Chen Liu , Wei Zhang , Feng Qiu , Lincheng Li , Xin Yu

Ambivalence/hesitancy recognition in unconstrained videos is a challenging problem due to the subtle, multimodal, and context-dependent nature of this behavioral state. In this paper, a multimodal approach for video-level…

Computer Vision and Pattern Recognition · Computer Science 2026-03-16 Elena Ryumina , Alexandr Axyonov , Dmitry Sysoev , Timur Abdulkadirov , Kirill Almetov , Yulia Morozova , Dmitry Ryumin

In the rapidly evolving fields of natural language processing and computer vision, Visual Word Sense Disambiguation (VWSD) stands as a critical, yet challenging task. The quest for models that can seamlessly integrate and interpret…

Computer Vision and Pattern Recognition · Computer Science 2024-08-13 Aristi Papastavrou , Maria Lymperaiou , Giorgos Stamou

This paper presents a novel hierarchical alignment model (HAM) that learns multi-granularity visual and linguistic representations in an end-to-end manner. We extract key points and proposal points to model 3D contexts and instances, and…

Computer Vision and Pattern Recognition · Computer Science 2023-06-12 Jiaming Chen , Weixin Luo , Ran Song , Xiaolin Wei , Lin Ma , Wei Zhang

Facial expression classification remains a challenging task due to the high dimensionality and inherent complexity of facial image data. This paper presents Hy-Facial, a hybrid feature extraction framework that integrates both deep learning…

Computer Vision and Pattern Recognition · Computer Science 2025-10-01 Xinjin Li , Yu Ma , Kaisen Ye , Jinghan Cao , Minghao Zhou , Yeyang Zhou

In facial action unit (AU) recognition tasks, regional feature learning and AU relation modeling are two effective aspects which are worth exploring. However, the limited representation capacity of regional features makes it difficult for…

Computer Vision and Pattern Recognition · Computer Science 2021-02-25 Jingwei Yan , Boyuan Jiang , Jingjing Wang , Qiang Li , Chunmao Wang , Shiliang Pu

A major challenge for video captioning is to combine audio and visual cues. Existing multi-modal fusion methods have shown encouraging results in video understanding. However, the temporal structures of multiple modalities at different…

Computation and Language · Computer Science 2018-04-17 Xin Wang , Yuan-Fang Wang , William Yang Wang

Infrared small target detection (ISTD) is vital for long-range surveillance in military, maritime, and early warning applications. ISTD is challenged by targets occupying less than 0.15% of the image and low distinguishability from complex…

Computer Vision and Pattern Recognition · Computer Science 2025-05-30 Wenhao Xu , Shuchen Zheng , Changwei Wang , Zherui Zhang , Chuan Ren , Rongtao Xu , Shibiao Xu

Audio-Visual Speech Recognition (AVSR) seeks to model, and thereby exploit, the dynamic relationship between a human voice and the corresponding mouth movements. A recently proposed multimodal fusion strategy, AV Align, based on…

Audio and Speech Processing · Electrical Eng. & Systems 2020-04-20 George Sterpu , Christian Saam , Naomi Harte

Multimodal large language models (MLLMs), such as GPT-4o, Gemini, LLaVA, and Flamingo, have made significant progress in integrating visual and textual modalities, excelling in tasks like visual question answering (VQA), image captioning,…

Computer Vision and Pattern Recognition · Computer Science 2024-12-31 Junxiao Xue , Quan Deng , Fei Yu , Yanhao Wang , Jun Wang , Yuehua Li

Active Speaker Detection (ASD) aims to identify who is currently speaking in each frame of a video. Most state-of-the-art approaches rely on late fusion to combine visual and audio features, but late fusion often fails to capture…

Computer Vision and Pattern Recognition · Computer Science 2025-12-18 Yu Wang , Juhyung Ha , Frangil M. Ramirez , Yuchen Wang , David J. Crandall

The vision-language tracking task aims to perform object tracking based on various modality references. Existing Transformer-based vision-language tracking methods have made remarkable progress by leveraging the global modeling ability of…

Computer Vision and Pattern Recognition · Computer Science 2024-11-26 Xinqi Liu , Li Zhou , Zikun Zhou , Jianqiu Chen , Zhenyu He

Visual grounding, which aims to ground a visual region via natural language, is a task that heavily relies on cross-modal alignment. Existing works utilized uni-modal pre-trained models to transfer visual or linguistic knowledge separately…

Computer Vision and Pattern Recognition · Computer Science 2024-09-06 Linhui Xiao , Xiaoshan Yang , Fang Peng , Yaowei Wang , Changsheng Xu

Unmanned aerial vehicles (UAVs) are now widely applied to data acquisition due to its low cost and fast mobility. With the increasing volume of aerial videos, the demand for automatically parsing these videos is surging. To achieve this,…

Computer Vision and Pattern Recognition · Computer Science 2022-09-28 Pu Jin , Lichao Mou , Yuansheng Hua , Gui-Song Xia , Xiao Xiang Zhu

Existing adversarial attacks for VLP models are mostly sample-specific, resulting in substantial computational overhead when scaled to large datasets or new scenarios. To overcome this limitation, we propose Hierarchical Refinement Attack…

Computer Vision and Pattern Recognition · Computer Science 2026-02-18 Peng-Fei Zhang , Zi Huang

In this work we tackle the task of video-based audio-visual emotion recognition, within the premises of the 2nd Workshop and Competition on Affective Behavior Analysis in-the-wild (ABAW2). Poor illumination conditions, head/body orientation…

Computer Vision and Pattern Recognition · Computer Science 2022-11-04 Panagiotis Antoniadis , Ioannis Pikoulis , Panagiotis P. Filntisis , Petros Maragos

In modern biomedical and econometric studies, longitudinal processes are often characterized by complex time-varying associations and abrupt regime shifts that are shared across correlated outcomes. Standard functional data analysis (FDA)…

Methodology · Statistics 2026-01-28 Baolin Chen , Mengfei Ran

Multimodal image fusion aims to integrate information from different imaging techniques to produce a comprehensive, detail-rich single image for downstream vision tasks. Existing methods based on local convolutional neural networks (CNNs)…

Computer Vision and Pattern Recognition · Computer Science 2025-02-04 Xinyu Xie , Yawen Cui , Tao Tan , Xubin Zheng , Zitong Yu
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