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Scanning electron microscopy (SEM) is indispensable in diverse applications ranging from microelectronics to food processing because it provides large depth-of-field images with a resolution beyond the optical diffraction limit. However,…

One of the major challenges in ocular biometrics is the cross-spectral scenario, i.e., how to match images acquired in different wavelengths (typically visible (VIS) against near-infrared (NIR)). This article designs and extensively…

Computer Vision and Pattern Recognition · Computer Science 2019-11-22 Luiz A. Zanlorensi , Diego R. Lucio , Alceu S. Britto , Hugo Proença , David Menotti

Open-set domain generalization (OSDG) tackles the dual challenge of recognizing unknown classes while simultaneously striving to generalize across unseen domains without using target data during training. In this article, an OSDG framework…

Computer Vision and Pattern Recognition · Computer Science 2025-11-24 Amirreza Khoshbakht , Erchan Aptoula

Open-set recognition (OSR) aims to simultaneously detect unknown-class samples and classify known-class samples. Most of the existing OSR methods are inductive methods, which generally suffer from the domain shift problem that the learned…

Computer Vision and Pattern Recognition · Computer Science 2022-07-14 Jiayin Sun , Qiulei Dong

Medical imaging datasets are often characterized by extreme class imbalances, where rare pathologies are significantly underrepresented compared to common conditions. This imbalance poses a dual challenge for Open-Set Recognition (OSR):…

Computer Vision and Pattern Recognition · Computer Science 2026-05-04 Vishal , Arnav Aditya , Nitin Kumar , Saurabh J. Shigwan

Endoscopy plays a major role in identifying any underlying abnormalities within the gastrointestinal (GI) tract. There are multiple GI tract diseases that are life-threatening, such as precancerous lesions and other intestinal cancers. In…

Computer Vision and Pattern Recognition · Computer Science 2023-08-21 Harshala Gammulle , Yubo Chen , Sridha Sridharan , Travis Klein , Clinton Fookes

The task of remote sensing image scene classification (RSISC), which aims at classifying remote sensing images into groups of semantic categories based on their contents, has taken the important role in a wide range of applications such as…

Computer Vision and Pattern Recognition · Computer Science 2022-06-28 Lam Pham , Khoa Tran , Dat Ngo , Jasmin Lampert , Alexander Schindler

Nowadays, service robots are appearing more and more in our daily life. For this type of robot, open-ended object category learning and recognition is necessary since no matter how extensive the training data used for batch learning, the…

Robotics · Computer Science 2021-01-01 Hamidreza Kasaei

Deep learning models achieve strong performance in chest radiograph (CXR) interpretation, yet fairness and reliability concerns persist. Models often show uneven accuracy across patient subgroups, leading to hidden failures not reflected in…

Computer Vision and Pattern Recognition · Computer Science 2025-10-03 Han-Jay Shu , Wei-Ning Chiu , Shun-Ting Chang , Meng-Ping Huang , Takeshi Tohyama , Ahram Han , Po-Chih Kuo

This paper proposes a method to use deep neural networks as end-to-end open-set classifiers. It is based on intra-class data splitting. In open-set recognition, only samples from a limited number of known classes are available for training.…

Machine Learning · Computer Science 2019-11-21 Patrick Schlachter , Yiwen Liao , Bin Yang

Recent advancements in deep learning have greatly enhanced 3D object recognition, but most models are limited to closed-set scenarios, unable to handle unknown samples in real-world applications. Open-set recognition (OSR) addresses this…

Computer Vision and Pattern Recognition · Computer Science 2025-06-17 Jinfeng Xu , Xianzhi Li , Yuan Tang , Xu Han , Qiao Yu , Yixue Hao , Long Hu , Min Chen

Open set recognition (OSR) requires the model to classify samples that belong to closed sets while rejecting unknown samples during test. Currently, generative models often perform better than discriminative models in OSR, but recent…

Computer Vision and Pattern Recognition · Computer Science 2024-01-15 Yu Wang , Junxian Mu , Pengfei Zhu , Qinghua Hu

Most state-of-the-art vein recognition methods rely on closed-set classification, which inherently limits their scalability and prevents the adaptive enrollment of new users without complete model retraining. We rigorously evaluate the…

Computer Vision and Pattern Recognition · Computer Science 2026-04-17 Paweł Pilarek , Marcel Musiałek , Anna Górska

Medical images may contain various types of artifacts with different patterns and mixtures, which depend on many factors such as scan setting, machine condition, patients' characteristics, surrounding environment, etc. However, existing…

Image and Video Processing · Electrical Eng. & Systems 2021-10-26 Yu-Jen Chen , Yen-Jung Chang , Shao-Cheng Wen , Yiyu Shi , Xiaowei Xu , Tsung-Yi Ho , Meiping Huang , Haiyun Yuan , Jian Zhuang

Endoscopy is the most widely used imaging technique for the diagnosis of cancerous lesions in hollow organs. However, endoscopic images are often affected by illumination artefacts: image parts may be over- or underexposed according to the…

Image and Video Processing · Electrical Eng. & Systems 2024-10-28 Axel Garcia-Vega , Ricardo Espinosa , Luis Ramirez-Guzman , Thomas Bazin , Luis Falcon-Morales , Gilberto Ochoa-Ruiz , Dominique Lamarque , Christian Daul

Purpose Automated segmentation of anatomical structures in medical image analysis is a prerequisite for autonomous diagnosis as well as various computer and robot aided interventions. Recent methods based on deep convolutional neural…

Computer Vision and Pattern Recognition · Computer Science 2020-09-22 Max-Heinrich Laves , Jens Bicker , Lüder A. Kahrs , Tobias Ortmaier

Existing open set recognition (OSR) methods are typically designed for static scenarios, where models aim to classify known classes and identify unknown ones within fixed scopes. This deviates from the expectation that the model should…

Computer Vision and Pattern Recognition · Computer Science 2025-09-10 Runqing Yang , Yimin Fu , Changyuan Wu , Zhunga Liu

Medical image super-resolution (MedSR) is essential for improving diagnostic precision across diverse imaging modalities such as MRI, CT, X-ray, Ultrasound, and Fundus imaging. Despite rapid advances in deep learning, challenges remain in…

Computer Vision and Pattern Recognition · Computer Science 2026-05-06 Subhash Gurappa , Trivikram Satharasi , Yashas Hariprasad , Sundararaj Sitharama Iyengar

Detecting test-time distribution shift has emerged as a key capability for safely deployed machine learning models, with the question being tackled under various guises in recent years. In this paper, we aim to provide a consolidated view…

Computer Vision and Pattern Recognition · Computer Science 2024-09-02 Hongjun Wang , Sagar Vaze , Kai Han

In open set recognition (OSR), almost all existing methods are designed specially for recognizing individual instances, even these instances are collectively coming in batch. Recognizers in decision either reject or categorize them to some…

Machine Learning · Computer Science 2020-03-24 Chuanxing Geng , Songcan Chen