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Related papers: Generalized Category Discovery in Hyperspectral Im…

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Generalized category discovery (GCD) aims at grouping unlabeled samples from known and unknown classes, given labeled data of known classes. To meet the recent decentralization trend in the community, we introduce a practical yet…

Computer Vision and Pattern Recognition · Computer Science 2023-05-24 Nan Pu , Zhun Zhong , Xinyuan Ji , Nicu Sebe

Generalized Category Discovery (GCD) is an open-world problem that clusters unlabeled data by leveraging knowledge from partially labeled categories. A key challenge is that unlabeled data may contain both known and novel categories.…

Computer Vision and Pattern Recognition · Computer Science 2025-10-01 Haiyang Zheng , Nan Pu , Wenjing Li , Nicu Sebe , Zhun Zhong

Recognizing and differentiating among both familiar and unfamiliar faces is a critical capability for face recognition systems and a key step toward artificial general intelligence (AGI). Motivated by this ability, this paper introduces…

Computer Vision and Pattern Recognition · Computer Science 2025-07-31 Yunseok Oh , Dong-Wan Choi

High spectral dimensionality and the shortage of annotations make hyperspectral image (HSI) classification a challenging problem. Recent studies suggest that convolutional neural networks can learn discriminative spatial features, which…

Computer Vision and Pattern Recognition · Computer Science 2018-02-13 Zilong Zhong , Jonathan Li

Generalized Category Discovery (GCD) seeks to uncover novel categories in unlabeled data while preserving recognition of known categories, yet prevailing visual-only pipelines and the loose coupling between supervised learning and discovery…

Computer Vision and Pattern Recognition · Computer Science 2026-03-23 Jizhou Han , Chenhao Ding , Yuhang He , Qiang Wang , Shaokun Wang , SongLin Dong , Yihong Gong

Generalized Category Discovery (GCD) seeks to identify novel categories from unlabeled data while retaining the classification ability of seen categories. Prior GCD methods commonly leverage transferable representations from pre-trained…

Computer Vision and Pattern Recognition · Computer Science 2026-05-12 Bo Ye , Kai Gan , Tong Wei , Min-Ling Zhang

Change detection (CD) is an important application of remote sensing, which provides timely change information about large-scale Earth surface. With the emergence of hyperspectral imagery, CD technology has been greatly promoted, as…

Computer Vision and Pattern Recognition · Computer Science 2023-04-06 Qi Wang , Zhenghang Yuan , Qian Du , Xuelong Li

Different from the traditional semi-supervised learning paradigm that is constrained by the close-world assumption, Generalized Category Discovery (GCD) presumes that the unlabeled dataset contains new categories not appearing in the…

Computer Vision and Pattern Recognition · Computer Science 2025-03-17 Yuxun Qu , Yongqiang Tang , Chenyang Zhang , Wensheng Zhang

We address the problem of generalized category discovery (GCD) in this paper, i.e. clustering the unlabeled images leveraging the information from a set of seen classes, where the unlabeled images could contain both seen classes and unseen…

Computer Vision and Pattern Recognition · Computer Science 2022-08-04 Yixin Fei , Zhongkai Zhao , Siwei Yang , Bingchen Zhao

In Generalized Category Discovery (GCD), we cluster unlabeled samples of known and novel classes, leveraging a training dataset of known classes. A salient challenge arises due to domain shifts between these datasets. To address this, we…

Computer Vision and Pattern Recognition · Computer Science 2024-04-09 Sai Bhargav Rongali , Sarthak Mehrotra , Ankit Jha , Mohamad Hassan N C , Shirsha Bose , Tanisha Gupta , Mainak Singha , Biplab Banerjee

Generalized category discovery (GCD) is a recently proposed open-world problem, which aims to automatically cluster partially labeled data. The main challenge is that the unlabeled data contain instances that are not only from known…

Computer Vision and Pattern Recognition · Computer Science 2023-03-31 Nan Pu , Zhun Zhong , Nicu Sebe

Generalized Category Discovery (GCD) aims to classify instances from both known and novel categories within a large-scale unlabeled dataset, a critical yet challenging task for real-world, open-world applications. However, existing methods…

Computer Vision and Pattern Recognition · Computer Science 2026-01-16 Wenwen Liao , Hang Ruan , Jianbo Yu , Yuansong Wang , Qingchao Jiang , Xiaofeng Yang

Generalized Category Discovery (GCD) aims to identify a mix of known and novel categories within unlabeled data sets, providing a more realistic setting for image recognition. Essentially, GCD needs to remember existing patterns thoroughly…

Computer Vision and Pattern Recognition · Computer Science 2025-03-06 Xinzi Cao , Xiawu Zheng , Guanhong Wang , Weijiang Yu , Yunhang Shen , Ke Li , Yutong Lu , Yonghong Tian

Generalized class discovery (GCD) aims to infer known and unknown categories in an unlabeled dataset leveraging prior knowledge of a labeled set comprising known classes. Existing research implicitly/explicitly assumes that the frequency of…

Computer Vision and Pattern Recognition · Computer Science 2024-01-12 Ziyun Li , Ben Dai , Furkan Simsek , Christoph Meinel , Haojin Yang

We tackle the issue of generalized category discovery (GCD). GCD considers the open-world problem of automatically clustering a partially labelled dataset, in which the unlabelled data may contain instances from both novel categories and…

Computer Vision and Pattern Recognition · Computer Science 2024-03-26 Shaozhe Hao , Kai Han , Kwan-Yee K. Wong

This paper investigates the problem of Generalized Category Discovery (GCD). Given a partially labelled dataset, GCD aims to categorize all unlabelled images, regardless of whether they belong to known or unknown classes. Existing…

Computer Vision and Pattern Recognition · Computer Science 2025-10-22 Zhenqi He , Yuanpei Liu , Kai Han

Category discovery (CD) is an emerging open-world learning task, which aims at automatically categorizing unlabelled data containing instances from unseen classes, given some labelled data from seen classes. This task has attracted…

Computer Vision and Pattern Recognition · Computer Science 2025-09-30 Zhenqi He , Yuanpei Liu , Kai Han

Dimensionality reduction is an important preprocessing step of the hyperspectral images classification (HSI), it is inevitable task. Some methods use feature selection or extraction algorithms based on spectral and spatial information. In…

Computer Vision and Pattern Recognition · Computer Science 2022-11-02 Hasna Nhaila , Elkebir Sarhrouni , Ahmed Hammouch

Generalized category discovery (GCD) aims at addressing a more realistic and challenging setting of semi-supervised learning, where only part of the category labels are assigned to certain training samples. Previous methods generally employ…

Computer Vision and Pattern Recognition · Computer Science 2024-02-02 Yuanpeng Tu , Zhun Zhong , Yuxi Li , Hengshuang Zhao

Hyperbolic representation learning has been widely used to extract implicit hierarchies within data, and recently it has found its way to the open-world classification task of Generalized Category Discovery (GCD). However, prior hyperbolic…

Machine Learning · Computer Science 2026-02-06 Mohamad Dalal , Thomas B. Moeslund , Joakim Bruslund Haurum