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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…

计算机视觉与模式识别 · 计算机科学 2023-03-31 Nan Pu , Zhun Zhong , Nicu Sebe

Domain adaptive person re-identification (re-ID) is a challenging task, especially when person identities in target domains are unknown. Existing methods attempt to address this challenge by transferring image styles or aligning feature…

计算机视觉与模式识别 · 计算机科学 2020-04-24 Yunpeng Zhai , Shijian Lu , Qixiang Ye , Xuebo Shan , Jie Chen , Rongrong Ji , Yonghong Tian

Employing clustering strategy to assign unlabeled target images with pseudo labels has become a trend for person re-identification (re-ID) algorithms in domain adaptation. A potential limitation of these clustering-based methods is that…

计算机视觉与模式识别 · 计算机科学 2021-09-08 Suncheng Xiang , Yuzhuo Fu , Mengyuan Guan , Ting Liu

Unsupervised person re-identification (Re-Id) has attracted increasing attention due to its practical application in the read-world video surveillance system. The traditional unsupervised Re-Id are mostly based on the method alternating…

计算机视觉与模式识别 · 计算机科学 2022-05-25 De Cheng , Jingyu Zhou , Nannan Wang , Xinbo Gao

Unsupervised person re-ID is the task of identifying people on a target data set for which the ID labels are unavailable during training. In this paper, we propose to unify two trends in unsupervised person re-ID: clustering & fine-tuning…

计算机视觉与模式识别 · 计算机科学 2020-04-29 Guillaume Delorme , Yihong Xu , Stephane Lathuilière , Radu Horaud , Xavier Alameda-Pineda

Re-ranking utilizes contextual information to optimize the initial ranking list of person or vehicle re-identification (re-ID), which boosts the retrieval performance at post-processing steps. This paper proposes a re-ranking network to…

计算机视觉与模式识别 · 计算机科学 2022-03-22 Yunhao Zhou , Yi Wang , Lap-Pui Chau

This paper proposes to perform online clustering by conducting twin contrastive learning (TCL) at the instance and cluster level. Specifically, we find that when the data is projected into a feature space with a dimensionality of the target…

机器学习 · 计算机科学 2022-10-24 Yunfan Li , Mouxing Yang , Dezhong Peng , Taihao Li , Jiantao Huang , Xi Peng

Unsupervised person re-identification (ReID) is a challenging task without data annotation to guide discriminative learning. Existing methods attempt to solve this problem by clustering extracted embeddings to generate pseudo labels.…

计算机视觉与模式识别 · 计算机科学 2022-08-30 Xue Li , Tengfei Liang , Yi Jin , Tao Wang , Yidong Li

Clustering is one of the fundamental tasks in computer vision and pattern recognition. Recently, deep clustering methods (algorithms based on deep learning) have attracted wide attention with their impressive performance. Most of these…

计算机视觉与模式识别 · 计算机科学 2021-06-14 Yanhai Gan , Xinghui Dong , Huiyu Zhou , Feng Gao , Junyu Dong

Machine learning models often suffer from catastrophic forgetting of previously learned knowledge when learning new classes. Various methods have been proposed to mitigate this issue. However, rehearsal-based learning, which retains samples…

机器学习 · 计算机科学 2024-10-10 Hossein Rezaei , Mohammad Sabokrou

Recently, self-supervised representation learning gives further development in multimedia technology. Most existing self-supervised learning methods are applicable to packaged data. However, when it comes to streamed data, they are…

计算机视觉与模式识别 · 计算机科学 2022-11-03 Zhiwei Lin , Yongtao Wang , Hongxiang Lin

Multi-view clustering has shown to be an effective method for analyzing underlying patterns in multi-view data. The performance of clustering can be improved by learning the consistency and complementarity between multi-view features,…

计算机视觉与模式识别 · 计算机科学 2025-08-20 Shihao Dong , Yuhui Zheng , Huiying Xu , Xinzhong Zhu

Self-supervised instance discrimination is an effective contrastive pretext task to learn feature representations and address limited medical image annotations. The idea is to make features of transformed versions of the same images similar…

计算机视觉与模式识别 · 计算机科学 2022-11-17 Yejia Zhang , Xinrong Hu , Nishchal Sapkota , Yiyu Shi , Danny Z. Chen

Unsupervised person re-identification (ReID) aims at learning discriminative identity features without annotations. Recently, self-supervised contrastive learning has gained increasing attention for its effectiveness in unsupervised…

计算机视觉与模式识别 · 计算机科学 2021-08-19 Hao Chen , Benoit Lagadec , Francois Bremond

Contrastive learning is widely used in clustering tasks due to its discriminative representation. However, the conflict problem between classes is difficult to solve effectively. Existing methods try to solve this problem through prototype…

计算机视觉与模式识别 · 计算机科学 2025-08-22 Shihao Dong , Xiaotong Zhou , Yuhui Zheng , Huiying Xu , Xinzhong Zhu

Self-supervised learning enables networks to learn discriminative features from massive data itself. Most state-of-the-art methods maximize the similarity between two augmentations of one image based on contrastive learning. By utilizing…

计算机视觉与模式识别 · 计算机科学 2023-07-05 Jidong Ge , Yuxiang Liu , Jie Gui , Lanting Fang , Ming Lin , James Tin-Yau Kwok , LiGuo Huang , Bin Luo

Image retrieval task consists of finding similar images to a query image from a set of gallery (database) images. Such systems are used in various applications e.g. person re-identification (ReID) or visual product search. Despite active…

计算机视觉与模式识别 · 计算机科学 2021-04-29 Mikolaj Wieczorek , Barbara Rychalska , Jacek Dabrowski

Contrastive, self-supervised learning of object representations recently emerged as an attractive alternative to reconstruction-based training. Prior approaches focus on contrasting individual object representations (slots) against one…

计算机视觉与模式识别 · 计算机科学 2020-11-23 Sindy Löwe , Klaus Greff , Rico Jonschkowski , Alexey Dosovitskiy , Thomas Kipf

Differentially private (DP) contrastive learning aims to learn general-purpose representations from sensitive data, alleviating the privacy leakage concerns of organizations deploying or sharing embedding models trained on private user…

密码学与安全 · 计算机科学 2026-04-30 Kecen Li , Chen Gong , Zinan Lin , Tianhao Wang , Xiaokui Xiao

Recently, there is a vast interest in developing methods which are independent of the training samples such as deep image prior, zero-shot learning, and internal learning. The methods above are based on the common goal of maximizing image…

图像与视频处理 · 电气工程与系统科学 2019-12-10 Indra Deep Mastan , Shanmuganathan Raman