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Robustness to domain changes is a key capability for effective deployment of human action recognition systems in real-world scenarios, where action categories at inference can present important domain shifts or even unseen actions from…

Computer Vision and Pattern Recognition · Computer Science 2026-05-22 Yannick Porto , Renato Martins , Thomas Chalumeau , Cedric Demonceaux

Data of different modalities generally convey complimentary but heterogeneous information, and a more discriminative representation is often preferred by combining multiple data modalities like the RGB and infrared features. However in…

Computer Vision and Pattern Recognition · Computer Science 2018-04-18 Lan Wang , Chenqiang Gao , Luyu Yang , Yue Zhao , Wangmeng Zuo , Deyu Meng

Contrastive unsupervised representation learning (CURL) is the state-of-the-art technique to learn representations (as a set of features) from unlabelled data. While CURL has collected several empirical successes recently, theoretical…

Machine Learning · Computer Science 2020-07-20 Kento Nozawa , Pascal Germain , Benjamin Guedj

Generalized Zero-shot Learning (GZSL) has yielded remarkable performance by designing a series of unbiased visual-semantics mappings, wherein, the precision relies heavily on the completeness of extracted visual features from both seen and…

Computer Vision and Pattern Recognition · Computer Science 2023-12-05 Zhijie Rao , Jingcai Guo , Xiaocheng Lu , Qihua Zhou , Jie Zhang , Kang Wei , Chenxin Li , Song Guo

Recognizing human activities in videos is challenging due to the spatio-temporal complexity and context-dependence of human interactions. Prior studies often rely on single input modalities, such as RGB or skeletal data, limiting their…

Computer Vision and Pattern Recognition · Computer Science 2024-09-05 Tuyen Tran , Thao Minh Le , Hung Tran , Truyen Tran

Multimodal learning assumes all modality combinations of interest are available during training to learn cross-modal correspondences. In this paper, we challenge this modality-complete assumption for multimodal learning and instead strive…

Computer Vision and Pattern Recognition · Computer Science 2023-10-26 Yunhua Zhang , Hazel Doughty , Cees G. M. Snoek

The core challenge in unsupervised anomaly detection is identifying abnormal patterns without prior knowledge of their characteristics. While existing methods have addressed aspects of this problem, they often struggle to learn a robust…

Machine Learning · Computer Science 2026-05-12 Prithul Sarker , Sushmita Sarker , Nicholas G. Murray , Alireza Tavakkoli

In this paper, we look at the problem of few-shot classification that aims to learn a classifier for previously unseen classes and domains from few labeled samples. Recent methods use adaptation networks for aligning their features to new…

Computer Vision and Pattern Recognition · Computer Science 2021-03-26 Wei-Hong Li , Xialei Liu , Hakan Bilen

Since Facial Action Unit (AU) annotations require domain expertise, common AU datasets only contain a limited number of subjects. As a result, a crucial challenge for AU detection is addressing identity overfitting. We find that AUs and…

Computer Vision and Pattern Recognition · Computer Science 2022-10-26 Zhipeng Hu , Wei Zhang , Lincheng Li , Yu Ding , Wei Chen , Zhigang Deng , Xin Yu

Human Action Recognition (HAR) aims to understand human behavior and assign a label to each action. It has a wide range of applications, and therefore has been attracting increasing attention in the field of computer vision. Human actions…

Computer Vision and Pattern Recognition · Computer Science 2022-06-22 Zehua Sun , Qiuhong Ke , Hossein Rahmani , Mohammed Bennamoun , Gang Wang , Jun Liu

Out-of-distribution (OOD) detection targets to detect and reject test samples with semantic shifts, to prevent models trained on in-distribution (ID) dataset from producing unreliable predictions. Existing works only extract the appearance…

Computer Vision and Pattern Recognition · Computer Science 2026-05-26 Xiang Fang , Arvind Easwaran , Blaise Genest

Addressing the Out-of-Distribution (OoD) segmentation task is a prerequisite for perception systems operating in an open-world environment. Large foundational models are frequently used in downstream tasks, however, their potential for OoD…

Computer Vision and Pattern Recognition · Computer Science 2024-09-11 Nazir Nayal , Youssef Shoeb , Fatma Güney

We propose a novel convolutional neural network approach to address the fine-grained recognition problem of multi-view dynamic facial action unit detection. We leverage recent gains in large-scale object recognition by formulating the task…

Computer Vision and Pattern Recognition · Computer Science 2018-08-21 Andres Romero , Juan Leon , Pablo Arbelaez

A unified video and action model holds significant promise for robotics, where videos provide rich scene information for action prediction, and actions provide dynamics information for video prediction. However, effectively combining video…

Robotics · Computer Science 2025-04-28 Shuang Li , Yihuai Gao , Dorsa Sadigh , Shuran Song

Models for image representation learning are typically designed for either recognition or generation. Various forms of contrastive learning help models learn to convert images to embeddings that are useful for classification, detection, and…

Computer Vision and Pattern Recognition · Computer Science 2026-01-21 Matthew Gwilliam , Xiao Wang , Xuefeng Hu , Zhenheng Yang

The paper introduces the UniMER dataset, marking the first study on Mathematical Expression Recognition (MER) targeting complex real-world scenarios. The UniMER dataset includes a large-scale training set, UniMER-1M, which offers…

Computer Vision and Pattern Recognition · Computer Science 2024-09-06 Bin Wang , Zhuangcheng Gu , Guang Liang , Chao Xu , Bo Zhang , Botian Shi , Conghui He

Human activity recognition (HAR) has been playing an increasingly important role in various domains such as healthcare, security monitoring, and metaverse gaming. Though numerous HAR methods based on computer vision have been developed to…

Computer Vision and Pattern Recognition · Computer Science 2024-03-01 Jianfei Yang , Shijie Tang , Yuecong Xu , Yunjiao Zhou , Lihua Xie

Ultra-wideband (UWB) through-wall radar has a wide range of applications in non-contact human information detection and monitoring. With the integration of machine learning technology, its potential prospects include the physiological…

Signal Processing · Electrical Eng. & Systems 2020-09-01 Zhengliang Zhu , Degui Yang , Junchao Zhang , Feng Tong

Universal image restoration aims to recover clean images from arbitrary real-world degradations using a single inference model. Despite significant progress, existing all-in-one restoration networks do not scale to multiple degradations. As…

Computer Vision and Pattern Recognition · Computer Science 2026-03-10 Debabrata Mandal , Soumitri Chattopadhyay , Yujie Wang , Marc Niethammer , Praneeth Chakravarthula

Multi-modal learning has achieved remarkable success by integrating information from various modalities, achieving superior performance in tasks like recognition and retrieval compared to uni-modal approaches. However, real-world scenarios…

Computer Vision and Pattern Recognition · Computer Science 2025-08-05 Xiaohao Liu , Xiaobo Xia , Zhuo Huang , See-Kiong Ng , Tat-Seng Chua