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Occluded person re-identification focuses on matching partially visible pedestrians across multiple camera views. However, occlusions disrupt body-region cues, thereby complicating cross-view matching. Most person ReID methods built on…

Computer Vision and Pattern Recognition · Computer Science 2026-05-20 Zhangjian Ji , Shaotong Qiao , Kai Feng , Wei Wei

Compared to visible-to-visible (V2V) person re-identification (ReID), the visible-to-infrared (V2I) person ReID task is more challenging due to the lack of sufficient training samples and the large cross-modality discrepancy. To this end,…

Computer Vision and Pattern Recognition · Computer Science 2022-10-26 Honghu Pan , Yongyong Chen , Yunqi He , Xin Li , Zhenyu He

Personalized text-to-image (P-T2I) generation aims to create new, text-guided images featuring the personalized subject with a few reference images. However, balancing the trade-off relationship between prompt fidelity and identity…

Computer Vision and Pattern Recognition · Computer Science 2024-07-16 Kangyeol Kim , Wooseok Seo , Sehyun Nam , Bodam Kim , Suhyeon Jeong , Wonwoo Cho , Jaegul Choo , Youngjae Yu

Image retrieval with hybrid-modality queries, also known as composing text and image for image retrieval (CTI-IR), is a retrieval task where the search intention is expressed in a more complex query format, involving both vision and text…

Computer Vision and Pattern Recognition · Computer Science 2022-04-26 Yida Zhao , Yuqing Song , Qin Jin

Pre-trained Vision-Language Models (VLMs) such as CLIP have shown excellent generalization abilities. However, adapting these large-scale models to downstream tasks while preserving their generalization capabilities remains challenging.…

Computer Vision and Pattern Recognition · Computer Science 2025-08-15 Hao Zheng , Shunzhi Yang , Zhuoxin He , Jinfeng Yang , Zhenhua Huang

Video-based Visible-Infrared Person Re-Identification (VVI-ReID) aims to match pedestrian sequences across modalities by extracting modality-invariant sequence-level features. As a high-level semantic representation, language provides a…

Computer Vision and Pattern Recognition · Computer Science 2025-06-04 Shuang Li , Jiaxu Leng , Changjiang Kuang , Mingpi Tan , Xinbo Gao

Image-to-image (I2I) translation is a pixel-level mapping that requires a large number of paired training data and often suffers from the problems of high diversity and strong category bias in image scenes. In order to tackle these…

Computer Vision and Pattern Recognition · Computer Science 2019-04-22 Liqian Ma , Qianru Sun , Bernt Schiele , Luc Van Gool

Person re-identification faces two core challenges: precisely locating the foreground target while suppressing background noise and extracting fine-grained features from the target region. Numerous visual-only approaches address these…

Computer Vision and Pattern Recognition · Computer Science 2025-09-04 Kaicong Huang , Talha Azfar , Jack M. Reilly , Thomas Guggisberg , Ruimin Ke

Text-to-image person re-identification (TIReID) retrieves pedestrian images of the same identity based on a query text. However, existing methods for TIReID typically treat it as a one-to-one image-text matching problem, only focusing on…

Computer Vision and Pattern Recognition · Computer Science 2023-10-18 Shuanglin Yan , Neng Dong , Jun Liu , Liyan Zhang , Jinhui Tang

Text-to-image person re-identification (ReID) retrieves pedestrian images according to textual descriptions. Manually annotating textual descriptions is time-consuming, restricting the scale of existing datasets and therefore the…

Computer Vision and Pattern Recognition · Computer Science 2024-07-02 Wentao Tan , Changxing Ding , Jiayu Jiang , Fei Wang , Yibing Zhan , Dapeng Tao

Unsupervised person re-identification (ReID) aims to match a query image of a pedestrian to the images in gallery set without supervision labels. The most popular approaches to tackle unsupervised person ReID are usually performing a…

Computer Vision and Pattern Recognition · Computer Science 2022-04-15 He Sun , Mingkun Li , Chun-Guang Li

TIPO (Text-to-Image Prompt Optimization) introduces an efficient approach for automatic prompt refinement in text-to-image (T2I) generation. Starting from simple user prompts, TIPO leverages a lightweight pre-trained model to expand these…

Computer Vision and Pattern Recognition · Computer Science 2026-02-10 Shih-Ying Yeh , Yi Li , Sang-Hyun Park , Giyeong Oh , Xuehai Wang , Min Song , Youngjae Yu , Shang-Hong Lai

Video surveillance image analysis and processing is a challenging field in computer vision, with one of its most difficult tasks being Person Re-Identification (PRe-ID). PRe-ID aims to identify and track target individuals who have already…

Computer Vision and Pattern Recognition · Computer Science 2025-05-23 Ammar Chouchane , Mohcene Bessaoudi , Hamza Kheddar , Abdelmalik Ouamane , Tiago Vieira , Mahmoud Hassaballah

Cloth-changing person reidentification (ReID) is a newly emerging research topic that is aimed at addressing the issues of large feature variations due to cloth-changing and pedestrian view/pose changes. Although significant progress has…

Computer Vision and Pattern Recognition · Computer Science 2023-11-20 Zan Gao , Shenxun Wei , Weili Guan , Lei Zhu , Meng Wang , Shenyong Chen

This paper addresses the problem of matching pedestrians across multiple camera views, known as person re-identification. Variations in lighting conditions, environment and pose changes across camera views make re-identification a…

Computer Vision and Pattern Recognition · Computer Science 2015-12-01 Rahul Rama Varior , Gang Wang

Person re-identification (reID) aims to match person images to retrieve the ones with the same identity. This is a challenging task, as the images to be matched are generally semantically misaligned due to the diversity of human poses and…

Computer Vision and Pattern Recognition · Computer Science 2020-03-19 Xin Jin , Cuiling Lan , Wenjun Zeng , Guoqiang Wei , Zhibo Chen

Unsupervised domain adaptation person re-identification (Re-ID) aims to identify pedestrian images within an unlabeled target domain with an auxiliary labeled source-domain dataset. Many existing works attempt to recover reliable identity…

Computer Vision and Pattern Recognition · Computer Science 2023-01-31 Qiong Wu , Jiahan Li , Pingyang Dai , Qixiang Ye , Liujuan Cao , Yongjian Wu , Rongrong Ji

Real-world datasets often exhibit class imbalance across multiple categories, manifesting as long-tailed distributions and few-shot scenarios. This is especially challenging in Class-Imbalanced Multi-Label Image Classification (CI-MLIC)…

Computer Vision and Pattern Recognition · Computer Science 2025-09-23 Sheng Huang , Jiexuan Yan , Beiyan Liu , Bo Liu , Richang Hong

Multi-spectral object Re-identification (ReID) aims to retrieve specific objects by leveraging complementary information from different image spectra. It delivers great advantages over traditional single-spectral ReID in complex visual…

Computer Vision and Pattern Recognition · Computer Science 2023-12-18 Yuhao Wang , Xuehu Liu , Pingping Zhang , Hu Lu , Zhengzheng Tu , Huchuan Lu

Visible-infrared person re-identification (VI-ReID) enables cross-modality identity matching for all-day surveillance, yet existing methods predominantly focus on the image level or rely heavily on costly identity annotations. While…

Computer Vision and Pattern Recognition · Computer Science 2026-04-24 Zhiyong Li , Wei Jiang , Haojie Liu , Mingyu Wang , Wanchong Xu , Weijie Mao