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Extreme far-distance video person re-identification (ReID) is particularly challenging due to scale compression, resolution degradation, motion blur, and aerial-ground viewpoint mismatch. As camera altitude and subject distance increase,…

Computer Vision and Pattern Recognition · Computer Science 2026-04-07 Ashwat Rajbhandari , Bharatesh Chakravarthi

Pre-trained vision-language models like CLIP have recently shown superior performances on various downstream tasks, including image classification and segmentation. However, in fine-grained image re-identification (ReID), the labels are…

Computer Vision and Pattern Recognition · Computer Science 2023-01-03 Siyuan Li , Li Sun , Qingli Li

The fine-grained attribute descriptions can significantly supplement the valuable semantic information for person image, which is vital to the success of person re-identification (ReID) task. However, current ReID algorithms typically…

Computer Vision and Pattern Recognition · Computer Science 2023-12-29 Yajing Zhai , Yawen Zeng , Zhiyong Huang , Zheng Qin , Xin Jin , Da Cao

Human intelligence can retrieve any person according to both visual and language descriptions. However, the current computer vision community studies specific person re-identification (ReID) tasks in different scenarios separately, which…

Computer Vision and Pattern Recognition · Computer Science 2025-04-30 Weizhen He , Yiheng Deng , Shixiang Tang , Qihao Chen , Qingsong Xie , Yizhou Wang , Lei Bai , Feng Zhu , Rui Zhao , Wanli Ouyang , Donglian Qi , Yunfeng Yan

Aerial-Ground Re-Identification (AG-ReID) is constrained by the viewpoint-domain gap, as drastic viewpoint disparities occlude or distort discriminative features, making cross-viewpoint image retrieval challenging. While existing methods…

Computer Vision and Pattern Recognition · Computer Science 2026-04-30 William Grolleau , Astrid Sabourin , Guillaume Lapouge , Catherine Achard

Aerial-Ground Person Re-Identification (AGPReID) remains highly challenging due to drastic viewpoint variations between drones and fixed cameras. Existing methods typically follow a view-invariant paradigm, aligning shared features across…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Quan Zhang , Zeqiang Cai , Peiming Zhao , Jingze Wu , Cailun Wu , Hongbo Chen , Jianhuang Lai

Camera-based person re-identification (ReID) systems have been widely applied in the field of public security. However, cameras often lack the perception of 3D morphological information of human and are susceptible to various limitations,…

Computer Vision and Pattern Recognition · Computer Science 2023-12-13 Wenxuan Guo , Zhiyu Pan , Yingping Liang , Ziheng Xi , Zhi Chen Zhong , Jianjiang Feng , Jie Zhou

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

Person re-identification (re-ID) and attribute recognition share a common target at learning pedestrian descriptions. Their difference consists in the granularity. Most existing re-ID methods only take identity labels of pedestrians into…

Computer Vision and Pattern Recognition · Computer Science 2019-06-11 Yutian Lin , Liang Zheng , Zhedong Zheng , Yu Wu , Zhilan Hu , Chenggang Yan , Yi Yang

CLIP-based person re-identification (ReID) methods aggregate spatial features into a single global \texttt{[CLS]} token optimized for image-text alignment rather than spatial selectivity, making representations fragile under occlusion and…

Computer Vision and Pattern Recognition · Computer Science 2026-04-27 Aotian Zheng , Winston Sun , Bahaa Alattar , Vitaly Ablavsky , Jenq-Neng Hwang

Person re-identification (ReID) across aerial and ground vantage points has become crucial for large-scale surveillance and public safety applications. Although significant progress has been made in ground-only scenarios, bridging the…

Language-image pre-training is an effective technique for learning powerful representations in general domains. However, when directly turning to person representation learning, these general pre-training methods suffer from unsatisfactory…

Computer Vision and Pattern Recognition · Computer Science 2024-05-30 Jialong Zuo , Jiahao Hong , Feng Zhang , Changqian Yu , Hanyu Zhou , Changxin Gao , Nong Sang , Jingdong Wang

Person re-identification (ReID) has recently benefited from large pretrained vision-language models such as Contrastive Language-Image Pre-Training (CLIP). However, the absence of concrete descriptions necessitates the use of implicit text…

Computer Vision and Pattern Recognition · Computer Science 2024-10-15 Qianru Han , Xinwei He , Zhi Liu , Sannyuya Liu , Ying Zhang , Jinhai Xiang

In this work, we focus on text-based person retrieval, which identifies individuals based on textual descriptions. Despite advancements enabled by synthetic data for pretraining, a significant domain gap, due to variations in lighting,…

Computer Vision and Pattern Recognition · Computer Science 2026-03-31 Shuyu Yang , Yaxiong Wang , Yongrui Li , Li Zhu , Zhedong Zheng

Object Re-IDentification (ReID) aims to recognize individuals across non-overlapping camera views. While recent advances have achieved remarkable progress, most existing models are constrained to either single-domain or cross-domain…

Computer Vision and Pattern Recognition · Computer Science 2025-09-24 Yingquan Wang , Pingping Zhang , Chong Sun , Dong Wang , Huchuan Lu

While attributes have been widely used for person re-identification (Re-ID) which aims at matching the same person images across disjoint camera views, they are used either as extra features or for performing multi-task learning to assist…

Computer Vision and Pattern Recognition · Computer Science 2018-07-05 Zhou Yin , Wei-Shi Zheng , Ancong Wu , Hong-Xing Yu , Hai Wan , Xiaowei Guo , Feiyue Huang , Jianhuang Lai

Learning to re-identify or retrieve a group of people across non-overlapped camera systems has important applications in video surveillance. However, most existing methods focus on (single) person re-identification (re-id), ignoring the…

Computer Vision and Pattern Recognition · Computer Science 2021-04-30 Yichao Yan , Jie Qin , Bingbing Ni , Jiaxin Chen , Li Liu , Fan Zhu , Wei-Shi Zheng , Xiaokang Yang , Ling Shao

We introduce a new framework, dubbed Cerberus, for attribute-based person re-identification (reID). Our approach leverages person attribute labels to learn local and global person representations that encode specific traits, such as gender…

Computer Vision and Pattern Recognition · Computer Science 2024-12-03 Chanho Eom , Geon Lee , Kyunghwan Cho , Hyeonseok Jung , Moonsub Jin , Bumsub Ham

Person re-identification (ReID) aims at matching persons across different views/scenes. In addition to accuracy, the matching efficiency has received more and more attention because of demanding applications using large-scale data. Several…

Computer Vision and Pattern Recognition · Computer Science 2018-04-09 Zheng Liu , Jie Qin , Annan Li , Yunhong Wang , Luc Van Gool

Text attribute person search aims to find specific pedestrians through given textual attributes, which is very meaningful in the scene of searching for designated pedestrians through witness descriptions. The key challenge is the…

Computer Vision and Pattern Recognition · Computer Science 2024-06-07 Xin Wang , Fangfang Liu , Zheng Li , Caili Guo