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While significant advances exist in pseudo-label generation for semi-supervised semantic segmentation, pseudo-label selection remains understudied. Existing methods typically use fixed confidence thresholds to retain high-confidence…

Computer Vision and Pattern Recognition · Computer Science 2025-09-23 Pan Liu , Jinshi Liu

Transformer-based supervised pre-training achieves great performance in person re-identification (ReID). However, due to the domain gap between ImageNet and ReID datasets, it usually needs a larger pre-training dataset (e.g. ImageNet-21K)…

Computer Vision and Pattern Recognition · Computer Science 2021-11-24 Hao Luo , Pichao Wang , Yi Xu , Feng Ding , Yanxin Zhou , Fan Wang , Hao Li , Rong Jin

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…

Computer Vision and Pattern Recognition · Computer Science 2021-03-22 Xuanyu He , Wei Zhang , Ran Song , Qian Zhang , Xiangyuan Lan , Lin Ma

Gait recognition is an emerging identification technology that distinguishes individuals at long distances by analyzing individual walking patterns. Traditional techniques rely heavily on large-scale labeled datasets, which incurs high…

Computer Vision and Pattern Recognition · Computer Science 2025-04-08 Xiaolei Liu , Yan Sun , Zhiliang Wang , Mark Nixon

Unsupervised visible-infrared person re-identification (USVI-ReID) aims to match specified people in infrared images to visible images without annotations, and vice versa. USVI-ReID is a challenging yet under-explored task. Most existing…

Computer Vision and Pattern Recognition · Computer Science 2024-10-25 Jiangming Shi , Xiangbo Yin , Yachao Zhang , Zhizhong Zhang , Yuan Xie , Yanyun Qu

Person Re-Identification (ReID) matches pedestrians across disjoint cameras. Existing ReID methods adopting real-value feature descriptors have achieved high accuracy, but they are low in efficiency due to the slow Euclidean distance…

Computer Vision and Pattern Recognition · Computer Science 2022-07-14 Qingze Yin , Guanan Wang , Guodong Ding , Qilei Li , Shaogang Gong , Zhenmin Tang

Person re-identification aims to identify whether pairs of images belong to the same person or not. This problem is challenging due to large differences in camera views, lighting and background. One of the mainstream in learning CNN…

Computer Vision and Pattern Recognition · Computer Science 2019-12-12 Weinong Wang , Wenjie Pei , Qiong Cao , Shu Liu , Yu-Wing Tai

In recent years, video-based person Re-Identification (ReID) has gained attention for its ability to leverage spatiotemporal cues to match individuals across non-overlapping cameras. However, current methods struggle with high-difficulty…

Computer Vision and Pattern Recognition · Computer Science 2026-04-10 Shogo Hamano , Shunya Wakasugi , Tatsuhito Sato , Sayaka Nakamura

The acquisition of large-scale, precisely labeled datasets for person re-identification (ReID) poses a significant challenge. Weakly supervised ReID has begun to address this issue, although its performance lags behind fully supervised…

Computer Vision and Pattern Recognition · Computer Science 2024-02-13 Jacob Tyo , Zachary C. Lipton

The primary color profile of the same identity is assumed to remain consistent in typical Person Re-identification (Person ReID) tasks. However, this assumption may be invalid in real-world situations and images hold variant color profiles,…

Computer Vision and Pattern Recognition · Computer Science 2024-05-16 Jiahao Nie , Shan Lin , Alex C. Kot

Unsupervised video-based person re-identification (re-ID) methods extract richer features from video tracklets than image-based ones. The state-of-the-art methods utilize clustering to obtain pseudo-labels and train the models iteratively.…

Computer Vision and Pattern Recognition · Computer Science 2021-06-11 Pengyu Xie , Xin Xu , Zheng Wang , Toshihiko Yamasaki

Cloth-Changing Person Re-Identification (CC-ReID) involves recognizing individuals in images regardless of clothing status. In this paper, we empirically and experimentally demonstrate that completely eliminating or fully retaining clothing…

Computer Vision and Pattern Recognition · Computer Science 2024-10-15 Hongjun Wang , Jiyuan Chen , Zhengwei Yin , Xuan Song , Yinqiang Zheng

Generalized Category Discovery (GCD) requires a model to both classify known categories and cluster unknown categories in unlabeled data. Prior methods leveraged self-supervised pre-training combined with supervised fine-tuning on the…

Computer Vision and Pattern Recognition · Computer Science 2023-05-18 Rabah Ouldnoughi , Chia-Wen Kuo , Zsolt Kira

Person Re-Identification (ReID) across non-overlapping cameras is a challenging task and, for this reason, most works in the prior art rely on supervised feature learning from a labeled dataset to match the same person in different views.…

Computer Vision and Pattern Recognition · Computer Science 2022-02-08 Gabriel Bertocco , Fernanda Andaló , Anderson Rocha

New Intent Discovery (NID) strives to identify known and reasonably deduce novel intent groups in the open-world scenario. But current methods face issues with inaccurate pseudo-labels and poor representation learning, creating a negative…

Computation and Language · Computer Science 2024-04-19 Shun Zhang , Chaoran Yan , Jian Yang , Changyu Ren , Jiaqi Bai , Tongliang Li , Zhoujun Li

Recent advances in domain adaptation show that deep self-training presents a powerful means for unsupervised domain adaptation. These methods often involve an iterative process of predicting on target domain and then taking the confident…

Computer Vision and Pattern Recognition · Computer Science 2020-07-16 Yang Zou , Zhiding Yu , Xiaofeng Liu , B. V. K. Vijaya Kumar , Jinsong Wang

Recent progress in semi- and self-supervised learning has caused a rift in the long-held belief about the need for an enormous amount of labeled data for machine learning and the irrelevancy of unlabeled data. Although it has been…

Machine Learning · Computer Science 2023-03-14 Minwook Kim , Juseong Kim , Giltae Song

Compared to supervised learning, semi-supervised learning reduces the dependence of deep learning on a large number of labeled samples. In this work, we use a small number of labeled samples and perform data augmentation on unlabeled…

Machine Learning · Computer Science 2020-01-14 Qiuyu Zhu , Tiantian Li

Generalized category discovery (GCD) is a pragmatic but underexplored problem, which requires models to automatically cluster and discover novel categories by leveraging the labeled samples from old classes. The challenge is that unlabeled…

Machine Learning · Computer Science 2025-04-08 Shijie Ma , Fei Zhu , Xu-Yao Zhang , Cheng-Lin Liu

The pioneering method for unsupervised meta-learning, CACTUs, is a clustering-based approach with pseudo-labeling. This approach is model-agnostic and can be combined with supervised algorithms to learn from unlabeled data. However, it…

Machine Learning · Computer Science 2022-09-29 Xingping Dong , Jianbing Shen , Ling Shao