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Scene text recognition is a popular topic and extensively used in the industry. Although many methods have achieved satisfactory performance for the close-set text recognition challenges, these methods lose feasibility in open-set…

Computer Vision and Pattern Recognition · Computer Science 2022-08-09 Chang Liu , Chun Yang , Hai-Bo Qin , Xiaobin Zhu , Cheng-Lin Liu , Xu-Cheng Yin

Continual learning aims to learn new tasks incrementally using less computation and memory resources instead of retraining the model from scratch whenever new task arrives. However, existing approaches are designed in supervised fashion…

Computer Vision and Pattern Recognition · Computer Science 2021-08-03 Jiangpeng He , Fengqing Zhu

Collecting and labeling real datasets to train the person search networks not only requires a lot of time and effort, but also accompanies privacy issues. The weakly-supervised and unsupervised domain adaptation methods have been proposed…

Computer Vision and Pattern Recognition · Computer Science 2024-04-02 Minyoung Oh , Duhyun Kim , Jae-Young Sim

Unsupervised domain adaptation in person re-identification resorts to labeled source data to promote the model training on target domain, facing the dilemmas caused by large domain shift and large camera variations. The non-overlapping…

Computer Vision and Pattern Recognition · Computer Science 2019-05-15 Chuan-Xian Ren , Bo-Hua Liang , Zhen Lei

Vision-Language Models (VLMs) have demonstrated remarkable generalization capabilities across a wide range of tasks. However, their performance often remains suboptimal when directly applied to specific downstream scenarios without…

Machine Learning · Computer Science 2025-08-08 Hao Dong , Lijun Sheng , Jian Liang , Ran He , Eleni Chatzi , Olga Fink

In recent years, large "in the wild" face datasets have been released in an attempt to facilitate progress in tasks such as face detection, face recognition, and other tasks. Most of these datasets are acquired from webpages with automatic…

Computer Vision and Pattern Recognition · Computer Science 2020-03-25 Viktor Varkarakis , Peter Corcoran

In a real-world setting, visual recognition systems can be brought to make predictions for images belonging to previously unknown class labels. In order to make semantically meaningful predictions for such inputs, we propose a two-step…

Machine Learning · Computer Science 2017-08-29 Vincent P. A. Lonij , Ambrish Rawat , Maria-Irina Nicolae

Facial Expression Recognition (FER) is an important task in computer vision and has wide applications in human-computer interaction, intelligent security, emotion analysis, and other fields. However, the limited size of FER datasets limits…

Computer Vision and Pattern Recognition · Computer Science 2023-03-21 Jun Yu , Zhongpeng Cai , Renda Li , Gongpeng Zhao , Guochen Xie , Jichao Zhu , Wangyuan Zhu

Visual recognition tasks are often limited to dealing with a small subset of classes simply because the labels for the remaining classes are unavailable. We are interested in identifying novel concepts in a dataset through representation…

Computer Vision and Pattern Recognition · Computer Science 2023-03-17 Geeho Kim , Junoh Kang , Bohyung Han

In recent years, deep learning has greatly streamlined the process of manipulating photographic face images. Aware of the potential dangers, researchers have developed various tools to spot these counterfeits. Yet, none asks the fundamental…

Computer Vision and Pattern Recognition · Computer Science 2025-04-08 Mian Zou , Baosheng Yu , Yibing Zhan , Siwei Lyu , Kede Ma

Smile detection from unconstrained facial images is a specialized and challenging problem. As one of the most informative expressions, smiles convey basic underlying emotions, such as happiness and satisfaction, which lead to multiple…

Computer Vision and Pattern Recognition · Computer Science 2018-02-08 Xin Guo , Luisa F. Polanía , Kenneth E. Barner

In this paper, we consider a highly general image recognition setting wherein, given a labelled and unlabelled set of images, the task is to categorize all images in the unlabelled set. Here, the unlabelled images may come from labelled…

Computer Vision and Pattern Recognition · Computer Science 2022-06-22 Sagar Vaze , Kai Han , Andrea Vedaldi , Andrew Zisserman

In this work we focus on learning facial representations that can be adapted to train effective face recognition models, particularly in the absence of labels. Firstly, compared with existing labelled face datasets, a vastly larger…

Computer Vision and Pattern Recognition · Computer Science 2024-03-14 Zhonglin Sun , Chen Feng , Ioannis Patras , Georgios Tzimiropoulos

Data labeling for learning 3D hand pose estimation models is a huge effort. Readily available, accurately labeled synthetic data has the potential to reduce the effort. However, to successfully exploit synthetic data, current…

Computer Vision and Pattern Recognition · Computer Science 2018-12-06 Georg Poier , Michael Opitz , David Schinagl , Horst Bischof

These days deep learning is the fastest-growing area in the field of Machine Learning. Convolutional Neural Networks are currently the main tool used for image analysis and classification purposes. Although great achievements and…

Computer Vision and Pattern Recognition · Computer Science 2019-05-28 Agnieszka Mikołajczyk , Michał Grochowski

State-of-the-art computer vision models are mostly trained with supervised learning using human-labeled images, which limits their scalability due to the expensive annotation cost. While self-supervised representation learning has achieved…

Computer Vision and Pattern Recognition · Computer Science 2023-03-13 Junnan Li , Silvio Savarese , Steven C. H. Hoi

In the medical domain, the lack of large training data sets and benchmarks is often a limiting factor for training deep neural networks. In contrast to expensive manual labeling, computer simulations can generate large and fully labeled…

We present techniques for improving performance driven facial animation, emotion recognition, and facial key-point or landmark prediction using learned identity invariant representations. Established approaches to these problems can work…

Computer Vision and Pattern Recognition · Computer Science 2016-05-24 David Rim , Sina Honari , Md Kamrul Hasan , Chris Pal

A practical face recognition system demands not only high recognition performance, but also the capability of detecting spoofing attacks. While emerging approaches of face anti-spoofing have been proposed in recent years, most of them do…

Computer Vision and Pattern Recognition · Computer Science 2019-12-30 Xiaoguang Tu , Hengsheng Zhang , Mei Xie , Yao Luo , Yuefei Zhang , Zheng Ma

Binarization is a well-known image processing task, whose objective is to separate the foreground of an image from the background. One of the many tasks for which it is useful is that of preprocessing document images in order to identify…

Computer Vision and Pattern Recognition · Computer Science 2021-07-02 Francisco J. Castellanos , Antonio-Javier Gallego , Jorge Calvo-Zaragoza