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Current mainstream SAR image object detection methods still lack robustness when dealing with unknown objects in open environments. Open-set detection aims to enable detectors trained on a closed set to detect all known objects and identify…

Computer Vision and Pattern Recognition · Computer Science 2024-11-05 Xiayang Xiao , Zhuoxuan Li , Haipeng Wang

We present an open-set logo detection (OSLD) system, which can detect (localize and recognize) any number of unseen logo classes without re-training; it only requires a small set of canonical logo images for each logo class. We achieve this…

Computer Vision and Pattern Recognition · Computer Science 2022-03-15 Muhammet Bastan , Hao-Yu Wu , Tian Cao , Bhargava Kota , Mehmet Tek

In open-set recognition, existing methods generally learn statically fixed decision boundaries using known classes to reject unknown classes. Though they have achieved promising results, such decision boundaries are evidently insufficient…

Machine Learning · Computer Science 2024-05-06 Haifeng Yang , Chuanxing Geng , Pong C. Yuen , Songcan Chen

Out-of-distribution (OOD) detection empowers the model trained on the closed image set to identify unknown data in the open world. Though many prior techniques have yielded considerable improvements in this research direction, two crucial…

Computer Vision and Pattern Recognition · Computer Science 2024-01-18 Sen Pei

Nowadays, Deep Learning (DL) methods often overcome the limitations of traditional signal processing approaches. Nevertheless, DL methods are barely applied in real-life applications. This is mainly due to limited robustness and…

Machine Learning · Computer Science 2022-10-27 Julius Ott , Lorenzo Servadei , Gianfranco Mauro , Thomas Stadelmayer , Avik Santra , Robert Wille

Our work addresses the problem of learning to localize objects in an open-world setting, i.e., given the bounding box information of a limited number of object classes during training, the goal is to localize all objects, belonging to both…

Computer Vision and Pattern Recognition · Computer Science 2025-04-25 Ashish Singh , Michael J. Jones , Kuan-Chuan Peng , Anoop Cherian , Moitreya Chatterjee , Erik Learned-Miller

Image classification plays a pivotal role across diverse applications, yet challenges persist when models are deployed in real-world scenarios. Notably, these models falter in detecting unfamiliar classes that were not incorporated during…

Computer Vision and Pattern Recognition · Computer Science 2024-01-03 Butian Xiong , Liguang Zhou , Tin Lun Lam , Yangsheng Xu

With the recent renaissance of deep convolution neural networks, encouraging breakthroughs have been achieved on the supervised recognition tasks, where each class has sufficient training data and fully annotated training data. However, to…

Computer Vision and Pattern Recognition · Computer Science 2017-10-16 Yanwei Fu , Tao Xiang , Yu-Gang Jiang , Xiangyang Xue , Leonid Sigal , Shaogang Gong

Open set domain adaptation refers to the scenario that the target domain contains categories that do not exist in the source domain. It is a more common situation in the reality compared with the typical closed set domain adaptation where…

Machine Learning · Computer Science 2020-11-06 Sitong Mao , Xiao Shen , Fu-lai Chung

Traditional semi-supervised object detection methods assume a fixed set of object classes (in-distribution or ID classes) during training and deployment, which limits performance in real-world scenarios where unseen classes…

Computer Vision and Pattern Recognition · Computer Science 2024-11-05 Garvita Allabadi , Ana Lucic , Siddarth Aananth , Tiffany Yang , Yu-Xiong Wang , Vikram Adve

How can we train graph-based models to recognize unseen classes while keeping labeling costs low? Graph open-set learning (GOL) and out-of-distribution (OOD) detection aim to address this challenge by training models that can accurately…

Machine Learning · Computer Science 2025-05-12 Haoyan Xu , Kay Liu , Zhengtao Yao , Philip S. Yu , Mengyuan Li , Kaize Ding , Yue Zhao

In open-set semi-supervised learning (OSSL), we consider unlabeled datasets that may contain unknown classes. Existing OSSL methods often use the softmax confidence for classifying data as in-distribution (ID) or out-of-distribution (OOD).…

Machine Learning · Computer Science 2026-01-26 Erik Wallin , Lennart Svensson , Fredrik Kahl , Lars Hammarstrand

Open-set semi-supervised learning (OSSL) has attracted growing interest, which investigates a more practical scenario where out-of-distribution (OOD) samples are only contained in unlabeled data. Existing OSSL methods like OpenMatch learn…

Computer Vision and Pattern Recognition · Computer Science 2022-09-29 Haoran Li , Chun-Mei Feng , Tao Zhou , Yong Xu , Xiaojun Chang

Using unlabeled data to regularize the machine learning models has demonstrated promise for improving safety and reliability in detecting out-of-distribution (OOD) data. Harnessing the power of unlabeled in-the-wild data is non-trivial due…

Machine Learning · Computer Science 2024-02-07 Xuefeng Du , Zhen Fang , Ilias Diakonikolas , Yixuan Li

The existing continual learning methods are mainly focused on fully-supervised scenarios and are still not able to take advantage of unlabeled data available in the environment. Some recent works tried to investigate semi-supervised…

Open set domain adaptation aims to diminish the domain shift across domains, with partially shared classes. There exist unknown target samples out of the knowledge of source domain. Compared to the close set setting, how to separate the…

Computer Vision and Pattern Recognition · Computer Science 2019-08-13 Qianyu Feng , Guoliang Kang , Hehe Fan , Yi Yang

Evaluations of large-scale recognition methods typically focus on overall performance. While this approach is common, it often fails to provide insights into performance across individual classes, which can lead to fairness issues and…

Computer Vision and Pattern Recognition · Computer Science 2025-02-11 Ryan Rabinowitz , Steve Cruz , Manuel Günther , Terrance E. Boult

In real-world applications where confidence is key, like autonomous driving, the accurate detection and appropriate handling of classes differing from those used during training are crucial. Despite the proposal of various unknown object…

Computer Vision and Pattern Recognition · Computer Science 2024-11-11 Hejer Ammar , Nikita Kiselov , Guillaume Lapouge , Romaric Audigier

Few-shot Open-set Object Detection (FOOD) poses a challenge in many open-world scenarios. It aims to train an open-set detector to detect known objects while rejecting unknowns with scarce training samples. Existing FOOD methods are subject…

Computer Vision and Pattern Recognition · Computer Science 2025-05-22 Zhaowei Wu , Binyi Su , Qichuan Geng , Hua Zhang , Zhong Zhou

The existence of noisy data is prevalent in both the training and testing phases of machine learning systems, which inevitably leads to the degradation of model performance. There have been plenty of works concentrated on learning with…

Machine Learning · Computer Science 2021-08-26 Zhi-Fan Wu , Tong Wei , Jianwen Jiang , Chaojie Mao , Mingqian Tang , Yu-Feng Li
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