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Despite the promising progress made in recent years, person re-identification (re-ID) remains a challenging task due to the complex variations in human appearances from different camera views. For this challenging problem, a large variety…

Computer Vision and Pattern Recognition · Computer Science 2017-05-02 Xun Yang , Meng Wang , Richang Hong , Qi Tian , Yong Rui

Current person re-identification (ReID) methods typically rely on single-frame imagery features, whilst ignoring space-time information from image sequences often available in the practical surveillance scenarios. Single-frame (single-shot)…

Computer Vision and Pattern Recognition · Computer Science 2016-01-26 Taiqing Wang , Shaogang Gong , Xiatian Zhu , Shengjin Wang

Existing infrared and visible (IR-VIS) methods inherit the general representations of Pre-trained Visual Models (PVMs) to facilitate complementary learning. However, our analysis indicates that under the full fine-tuning paradigm, the…

Computer Vision and Pattern Recognition · Computer Science 2026-02-27 Yaming Zhang , Chenqiang Gao , Fangcen Liu , Junjie Guo , Lan Wang , Xinggan Peng , Deyu Meng

Inverse optimization seeks to recover unknown objective parameters from observed decisions, yet fundamental questions about when recovery is possible have received limited formal treatment. This paper develops a comprehensive theoretical…

Optimization and Control · Mathematics 2026-03-19 Farzin Ahmadi , Fardin Ganjkhanloo , Kimia Ghobadi

In visible-infrared video person re-identification (re-ID), extracting features not affected by complex scenes (such as modality, camera views, pedestrian pose, background, etc.) changes, and mining and utilizing motion information are the…

Computer Vision and Pattern Recognition · Computer Science 2023-08-14 Huafeng Li , Le Xu , Yafei Zhang , Dapeng Tao , Zhengtao Yu

Unsupervised visible-infrared person re-identification (UVI-ReID) aims to retrieve pedestrian images across different modalities without costly annotations, but faces challenges due to the modality gap and lack of supervision. Existing…

Computer Vision and Pattern Recognition · Computer Science 2025-05-07 Yongxiang Li , Yuan Sun , Yang Qin , Dezhong Peng , Xi Peng , Peng Hu

Person re identification is a challenging retrieval task that requires matching a person's acquired image across non overlapping camera views. In this paper we propose an effective approach that incorporates both the fine and coarse pose…

Computer Vision and Pattern Recognition · Computer Science 2018-04-03 M. Saquib Sarfraz , Arne Schumann , Andreas Eberle , Rainer Stiefelhagen

Recent researches on unsupervised person re-identification~(reID) have demonstrated that pre-training on unlabeled person images achieves superior performance on downstream reID tasks than pre-training on ImageNet. However, those…

Computer Vision and Pattern Recognition · Computer Science 2023-04-13 Liping Bao , Longhui Wei , Xiaoyu Qiu , Wengang Zhou , Houqiang Li , Qi Tian

To reduce the reliance of visible-infrared person re-identification (ReID) models on labeled cross-modal samples, this paper explores a weakly supervised cross-modal person ReID method that uses only single-modal sample identity labels,…

Computer Vision and Pattern Recognition · Computer Science 2025-07-18 Yafei Zhang , Lingqi Kong , Huafeng Li , Jie Wen

Visible-Infrared Person Re-Identification (VI-ReID) is a challenging retrieval task due to the substantial modality gap between visible and infrared images. While existing methods attempt to bridge this gap by learning modality-invariant…

Computer Vision and Pattern Recognition · Computer Science 2026-03-17 Haoxuan Xu , Guanglin Niu

In recent years, a growing body of research has focused on the problem of person re-identification (re-id). The re-id techniques attempt to match the images of pedestrians from disjoint non-overlapping camera views. A major challenge of…

Computer Vision and Pattern Recognition · Computer Science 2018-04-02 Zhanxiang Feng , Jianhuang Lai , Xiaohua Xie

RGB-Infrared (IR) person re-identification aims to retrieve person-of-interest from heterogeneous cameras, easily suffering from large image modality discrepancy caused by different sensing wavelength ranges. Existing work usually minimizes…

Computer Vision and Pattern Recognition · Computer Science 2021-07-27 Lin Wan , Zongyuan Sun , Qianyan Jing , Yehansen Chen , Lijing Lu , Zhihang Li

Visible-infrared person re-identification faces greater challenges than traditional person re-identification due to the significant differences between modalities. In particular, the differences between these modalities make effective…

Computer Vision and Pattern Recognition · Computer Science 2026-03-18 Yiming 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…

Computer Vision and Pattern Recognition · Computer Science 2024-11-08 Siddharth Seth , Akash Sonth , Anirban Chakraborty

RGB-Infrared (IR) person re-identification is very challenging due to the large cross-modality variations between RGB and IR images. The key solution is to learn aligned features to the bridge RGB and IR modalities. However, due to the lack…

Computer Vision and Pattern Recognition · Computer Science 2020-02-19 Guan-An Wang , Tianzhu Zhang. Yang Yang , Jian Cheng , Jianlong Chang , Xu Liang , Zengguang Hou

Visible-infrared person re-identification is challenging due to the large modality gap. To bridge the gap, most studies heavily rely on the correlation of visible-infrared holistic person images, which may perform poorly under severe…

Computer Vision and Pattern Recognition · Computer Science 2023-10-12 Guiwei Zhang , Yongfei Zhang , Zichang Tan

AI alignment in the shape of Reinforcement Learning from Human Feedback (RLHF) is increasingly treated as a crucial ingredient for high performance large language models. Proximal Policy Optimization (PPO) has been positioned by recent…

Video-based person re-identification (ReID) in cross-view domains (for example, aerial-ground surveillance) remains an open problem because of extreme viewpoint shifts, scale disparities, and temporal inconsistencies. To address these…

Computer Vision and Pattern Recognition · Computer Science 2025-11-05 Md Rashidunnabi , Kailash A. Hambarde , Vasco Lopes , Joao C. Neves , Hugo Proenca

Establishing a reliable and iteratively refined robotic system is essential for deploying real-world applications. While Vision-Language-Action (VLA) models are widely recognized as the foundation model for such robotic deployment, their…

Robotics · Computer Science 2025-10-31 Wenke Xia , Yichu Yang , Hongtao Wu , Xiao Ma , Tao Kong , Di Hu

Visible-Infrared person re-identification (VI-ReID) aims to match cross-modality pedestrian images, breaking through the limitation of single-modality person ReID in dark environment. In order to mitigate the impact of large modality…

Computer Vision and Pattern Recognition · Computer Science 2021-08-13 Chaoyou Fu , Yibo Hu , Xiang Wu , Hailin Shi , Tao Mei , Ran He