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Unsupervised person re-identification (ReID) aims to train a feature extractor for identity retrieval without exploiting identity labels. Due to the blind trust in imperfect clustering results, the learning is inevitably misled by…

计算机视觉与模式识别 · 计算机科学 2022-11-23 Yunqi Miao , Jiankang Deng , Guiguang Ding , Jungong Han

Unsupervised person re-identification (re-ID) aims at closing the performance gap to supervised methods. These methods build reliable relationship between data points while learning representations. However, we empirically show that the…

计算机视觉与模式识别 · 计算机科学 2021-03-22 Xuanyu He , Wei Zhang , Ran Song , Qian Zhang , Xiangyuan Lan , Lin Ma

Supervised person re-identification (re-id) approaches require a large amount of pairwise manual labeled data, which is not applicable in most real-world scenarios for re-id deployment. On the other hand, unsupervised re-id methods rely on…

计算机视觉与模式识别 · 计算机科学 2021-12-28 Wenjing Gao , Minxian Li

State-of-the-art unsupervised re-ID methods train the neural networks using a memory-based non-parametric softmax loss. Instance feature vectors stored in memory are assigned pseudo-labels by clustering and updated at instance level.…

计算机视觉与模式识别 · 计算机科学 2023-02-13 Zuozhuo Dai , Guangyuan Wang , Weihao Yuan , Xiaoli Liu , Siyu Zhu , Ping Tan

Person re-identification (Re-ID) aims to match identities across non-overlapping camera views. Researchers have proposed many supervised Re-ID models which require quantities of cross-view pairwise labelled data. This limits their…

计算机视觉与模式识别 · 计算机科学 2019-02-08 Hong-Xing Yu , Ancong Wu , Wei-Shi Zheng

For most unsupervised person re-identification (re-ID), people often adopt unsupervised domain adaptation (UDA) method. UDA often train on the labeled source dataset and evaluate on the target dataset, which often focuses on learning…

计算机视觉与模式识别 · 计算机科学 2020-04-23 Kaiwei Zeng

In this work, we address the problem of unsupervised domain adaptation for person re-ID where annotations are available for the source domain but not for target. Previous methods typically follow a two-stage optimization pipeline, where the…

计算机视觉与模式识别 · 计算机科学 2021-08-17 Takashi Isobe , Dong Li , Lu Tian , Weihua Chen , Yi Shan , Shengjin Wang

Person re-identification (re-ID) aims to tackle the problem of matching identities across non-overlapping cameras. Supervised approaches require identity information that may be difficult to obtain and are inherently biased towards the…

计算机视觉与模式识别 · 计算机科学 2024-11-08 Siddharth Seth , Akash Sonth , Anirban Chakraborty

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

Existing public person Re-Identification~(ReID) datasets are small in modern terms because of labeling difficulty. Although unlabeled surveillance video is abundant and relatively easy to obtain, it is unclear how to leverage these footage…

计算机视觉与模式识别 · 计算机科学 2021-05-18 Weiquan Huang , Yan Bai , Qiuyu Ren , Xinbo Zhao , Ming Feng , Yin Wang

To facilitate the re-identification (re-ID) of individual animals, existing methods primarily focus on maximizing feature similarity within the same individual and enhancing distinctiveness between different individuals. However, most of…

计算机视觉与模式识别 · 计算机科学 2024-07-19 Jincheng Zhang , Qijun Zhao , Tie Liu

With rapid advancements in depth sensors and deep learning, skeleton-based person re-identification (re-ID) models have recently achieved remarkable progress with many advantages. Most existing solutions learn single-level skeleton features…

计算机视觉与模式识别 · 计算机科学 2023-09-20 Haocong Rao , Cyril Leung , Chunyan Miao

The memory dictionary-based contrastive learning method has achieved remarkable results in the field of unsupervised person Re-ID. However, The method of updating memory based on all samples does not fully utilize the hardest sample to…

计算机视觉与模式识别 · 计算机科学 2024-04-09 Lingzhi Liu , Haiyang Zhang , Chengwei Tang , Tiantian Zhang

Recently, unsupervised person re-identification (Re-ID) has received increasing research attention due to its potential for label-free applications. A promising way to address unsupervised Re-ID is clustering-based, which generates pseudo…

计算机视觉与模式识别 · 计算机科学 2022-11-23 Menglin Wang , Jiachen Li , Baisheng Lai , Xiaojin Gong , Xian-Sheng Hua

Although unsupervised person re-identification (RE-ID) has drawn increasing research attentions due to its potential to address the scalability problem of supervised RE-ID models, it is very challenging to learn discriminative information…

计算机视觉与模式识别 · 计算机科学 2019-04-09 Hong-Xing Yu , Wei-Shi Zheng , Ancong Wu , Xiaowei Guo , Shaogang Gong , Jian-Huang Lai

This work aims to adapt large-scale pre-trained vision-language models, such as contrastive language-image pretraining (CLIP), to enhance the performance of object reidentification (Re-ID) across various supervision settings. Although…

计算机视觉与模式识别 · 计算机科学 2026-01-15 Jiachen Li , Xiaojin Gong

Person re-identification (ReId), a crucial task in surveillance, involves matching individuals across different camera views. The advent of Deep Learning, especially supervised techniques like Convolutional Neural Networks and Attention…

计算机视觉与模式识别 · 计算机科学 2025-10-27 Andrea Asperti , Salvatore Fiorilla , Simone Nardi , Lorenzo Orsini

Recently, many approaches tackle the Unsupervised Domain Adaptive person re-identification (UDA re-ID) problem through pseudo-label-based contrastive learning. During training, a uni-centroid representation is obtained by simply averaging…

计算机视觉与模式识别 · 计算机科学 2021-12-23 Yuhang Wu , Tengteng Huang , Haotian Yao , Chi Zhang , Yuanjie Shao , Chuchu Han , Changxin Gao , Nong Sang

Domain adaptive object re-ID aims to transfer the learned knowledge from the labeled source domain to the unlabeled target domain to tackle the open-class re-identification problems. Although state-of-the-art pseudo-label-based methods have…

计算机视觉与模式识别 · 计算机科学 2020-10-14 Yixiao Ge , Feng Zhu , Dapeng Chen , Rui Zhao , Hongsheng Li

Contrastive Language Image Pre-training (CLIP) has recently demonstrated success across various tasks due to superior feature representation empowered by image-text contrastive learning. However, the instance discrimination method used by…

计算机视觉与模式识别 · 计算机科学 2024-11-07 Xiang An , Kaicheng Yang , Xiangzi Dai , Ziyong Feng , Jiankang Deng