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Unsupervised anomaly detection (UAD) aims to detect anomalies without labeled data, a necessity in many machine learning applications where anomalous samples are rare or not available. Most state-of-the-art methods fall into two categories:…

Machine Learning · Computer Science 2025-07-30 Nicolas Pinon , Carole Lartizien

In class-incremental learning, the model is expected to learn new classes continually while maintaining knowledge on previous classes. The challenge here lies in preserving the model's ability to effectively represent prior classes in the…

Computer Vision and Pattern Recognition · Computer Science 2022-08-17 Arjun Ashok , K J Joseph , Vineeth Balasubramanian

The field of Continual Learning investigates the ability to learn consecutive tasks without losing performance on those previously learned. Its focus has been mainly on incremental classification tasks. We believe that research in continual…

Computer Vision and Pattern Recognition · Computer Science 2022-06-01 Angelo G. Menezes , Gustavo de Moura , Cézanne Alves , André C. P. L. F. de Carvalho

Multi-class ensemble classification remains a popular focus of investigation within the research community. The popularization of cloud services has sped up their adoption due to the ease of deploying large-scale machine-learning models. It…

Machine Learning · Computer Science 2024-04-17 Fernando Arévalo , Tahasanul Ibrahim , Christian Alison M. Piolo , Andreas Schwung

A number of important applied problems in engineering, finance and medicine can be formulated as a problem of anomaly detection. A classical approach to the problem is to describe a normal state using a one-class support vector machine.…

Machine Learning · Statistics 2016-11-22 Evgeny Burnaev , Dmitry Smolyakov

One-shot image classification aims to train image classifiers over the dataset with only one image per category. It is challenging for modern deep neural networks that typically require hundreds or thousands of images per class. In this…

Computer Vision and Pattern Recognition · Computer Science 2020-05-05 Wanqi Xue , Wei Wang

Anomaly Detection is a relevant problem that arises in numerous real-world applications, especially when dealing with images. However, there has been little research for this task in the Continual Learning setting. In this work, we…

Computer Vision and Pattern Recognition · Computer Science 2024-09-09 Davide Dalle Pezze , Eugenia Anello , Chiara Masiero , Gian Antonio Susto

Efficient learning from demonstration for long-horizon tasks remains an open challenge in robotics. While significant effort has been directed toward learning trajectories, a recent resurgence of object-centric approaches has demonstrated…

Robotics · Computer Science 2025-12-01 Adrian Röfer , Russell Buchanan , Max Argus , Sethu Vijayakumar , Abhinav Valada

This paper introduces a generic method which enables to use conventional deep neural networks as end-to-end one-class classifiers. The method is based on splitting given data from one class into two subsets. In one-class classification,…

Machine Learning · Computer Science 2019-09-17 Patrick Schlachter , Yiwen Liao , Bin Yang

Anomaly detection is defined as the problem of finding data points that do not follow the patterns of the majority. Among the various proposed methods for solving this problem, classification-based methods, including one-class Support…

Optimization and Control · Mathematics 2023-12-05 Amir Hossein Noormohammadia , Seyed Ali MirHassania , Farnaz Hooshmand Khaligh

The analysis of broken glass is forensically important to reconstruct the events of a criminal act. In particular, the comparison between the glass fragments found on a suspect (recovered cases) and those collected on the crime scene…

Applications · Statistics 2019-05-08 Laura Anderlucci , Francesca Fortunato , Angela Montanari

Deep learning approaches to object detection have achieved reliable detection of specific object classes in images. However, extending a model's detection capability to new object classes requires large amounts of annotated training data,…

Computer Vision and Pattern Recognition · Computer Science 2025-12-01 Vikhyat Agarwal , Jiayi Cora Guo , Declan Hoban , Sissi Zhang , Nicholas Moran , Peter Cho , Srilakshmi Pattabiraman , Shantanu Joshi

This paper presents a novel approach to one-class classifier fusion through locally adaptive learning with dynamic $\ell$p-norm constraints. We introduce a framework that dynamically adjusts fusion weights based on local data…

Machine Learning · Computer Science 2024-11-21 Sepehr Nourmohammadi , Arda Sarp Yenicesu , Shervin Rahimzadeh Arashloo , Ozgur S. Oguz

Developing data-efficient instance detection models that can handle rare object categories remains a key challenge in computer vision. However, existing research often overlooks data collection strategies and evaluation metrics tailored to…

Computer Vision and Pattern Recognition · Computer Science 2025-04-15 Boyang Deng , Meiyan Lin , Shoulun Long

In the context of high usability in single-class anomaly detection models, recent academic research has become concerned about the more complex multi-class anomaly detection. Although several papers have designed unified models for this…

Computer Vision and Pattern Recognition · Computer Science 2024-03-22 Xi Jiang , Ying Chen , Qiang Nie , Jianlin Liu , Yong Liu , Chengjie Wang , Feng Zheng

Existing unsupervised distillation-based methods rely on the differences between encoded and decoded features to locate abnormal regions in test images. However, the decoder trained only on normal samples still reconstructs abnormal patch…

Computer Vision and Pattern Recognition · Computer Science 2025-01-03 Xiaolei Wang , Xiaoyang Wang , Huihui Bai , Eng Gee Lim , Jimin Xiao

Open-world object detection (OWOD) is a challenging computer vision problem, where the task is to detect a known set of object categories while simultaneously identifying unknown objects. Additionally, the model must incrementally learn new…

Computer Vision and Pattern Recognition · Computer Science 2022-04-05 Akshita Gupta , Sanath Narayan , K J Joseph , Salman Khan , Fahad Shahbaz Khan , Mubarak Shah

Object detection is a task that performs position identification and label classification of objects in images or videos. The information obtained through this process plays an essential role in various tasks in the field of computer…

Computer Vision and Pattern Recognition · Computer Science 2023-09-06 Heewon Lee , Sangtae Ahn

Open-vocabulary camouflaged object segmentation requires models to segment camouflaged objects of arbitrary categories unseen during training, placing extremely high demands on generalization capabilities. Through analysis of existing…

Computer Vision and Pattern Recognition · Computer Science 2025-09-30 Hanyu Zhang , Yiming Zhou , Jinxia Zhang

The paper focuses on a classical tracking model, subspace learning, grounded on the fact that the targets in successive frames are considered to reside in a low-dimensional subspace or manifold due to the similarity in their appearances. In…

Computer Vision and Pattern Recognition · Computer Science 2022-04-19 Yao Sui , Guanghui Wang , Li Zhang