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Aerial-Ground person re-identification (AG-ReID) is an emerging yet challenging task that aims to match pedestrian images captured from drastically different viewpoints, typically from unmanned aerial vehicles (UAVs) and ground-based…

Computer Vision and Pattern Recognition · Computer Science 2026-01-14 Qiao Li , Jie Li , Yukang Zhang , Lei Tan , Jing Chen , Jiayi Ji

When discussing the Aerial-Ground Person Re-identification (AGPReID) task, we face the main challenge of the significant appearance variations caused by different viewpoints, making identity matching difficult. To address this issue,…

Computer Vision and Pattern Recognition · Computer Science 2025-04-11 Shining Wang , Yunlong Wang , Ruiqi Wu , Bingliang Jiao , Wenxuan Wang , Peng Wang

Aerial-Ground Person Re-IDentification (AG-ReID) aims to retrieve specific persons across cameras with different viewpoints. Previous works focus on designing discriminative models to maintain the identity consistency despite drastic…

Computer Vision and Pattern Recognition · Computer Science 2026-05-15 Yuhao Wang , Xiang Hu , Lixin Wang , Pingping Zhang , Huchuan Lu

Although great progress in supervised person re-identification (Re-ID) has been made recently, due to the viewpoint variation of a person, Re-ID remains a massive visual challenge. Most existing viewpoint-based person Re-ID methods project…

Computer Vision and Pattern Recognition · Computer Science 2019-12-04 Zhihui Zhu , Xinyang Jiang , Feng Zheng , Xiaowei Guo , Feiyue Huang , Weishi Zheng , Xing Sun

Image-to-point cloud cross-modal Visual Place Recognition (VPR) is a challenging task where the query is an RGB image, and the database samples are LiDAR point clouds. Compared to single-modal VPR, this approach benefits from the widespread…

Computer Vision and Pattern Recognition · Computer Science 2025-03-03 Jianyi Peng , Fan Lu , Bin Li , Yuan Huang , Sanqing Qu , Guang Chen

We introduce AG-VPReID, a new large-scale dataset for aerial-ground video-based person re-identification (ReID) that comprises 6,632 subjects, 32,321 tracklets and over 9.6 million frames captured by drones (altitudes ranging from 15-120m),…

Computer Vision and Pattern Recognition · Computer Science 2025-03-18 Huy Nguyen , Kien Nguyen , Akila Pemasiri , Feng Liu , Sridha Sridharan , Clinton Fookes

Domain Generalized person Re-identification (DG Re-ID) is a challenging task, where models are trained on source domains but tested on unseen target domains. Although previous pure vision-based models have achieved significant progress, the…

Computer Vision and Pattern Recognition · Computer Science 2026-03-17 Jiachen Li , Xiaojin Gong , Dongping Zhang

Existing person re-identification methods have achieved remarkable advances in appearance-based identity association across homogeneous cameras, such as ground-ground matching. However, as a more practical scenario, aerial-ground person…

Computer Vision and Pattern Recognition · Computer Science 2024-03-22 Quan Zhang , Lei Wang , Vishal M. Patel , Xiaohua Xie , Jianhuang Lai

Aerial-Ground Person Re-identification (AGPReID) holds significant practical value but faces unique challenges due to pronounced variations in viewing angles, lighting conditions, and background interference. Traditional methods, often…

Computer Vision and Pattern Recognition · Computer Science 2024-12-30 Yuhai Wang , Maryam Pishgar

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

In this paper, we construct a large-scale benchmark dataset for Ground-to-Aerial Video-based person Re-Identification, named G2A-VReID, which comprises 185,907 images and 5,576 tracklets, featuring 2,788 distinct identities. To our…

Computer Vision and Pattern Recognition · Computer Science 2024-09-04 Shizhou Zhang , Wenlong Luo , De Cheng , Qingchun Yang , Lingyan Ran , Yinghui Xing , Yanning Zhang

Unsupervised visual anomaly detection from multi-view images presents a significant challenge: distinguishing genuine defects from benign appearance variations caused by viewpoint changes. Existing methods, often designed for single-view…

Computer Vision and Pattern Recognition · Computer Science 2025-11-25 Xintao Chen , Xiaohao Xu , Bozhong Zheng , Yun Liu , Yingna Wu

Ensuring accurate localization of robots in environments without GPS capability is a challenging task. Visual Place Recognition (VPR) techniques can potentially achieve this goal, but existing RGB-based methods are sensitive to changes in…

Computer Vision and Pattern Recognition · Computer Science 2025-09-18 Yujia Lin , Nicholas Evans

Aerial-ground person re-identification (Re-ID) presents unique challenges in computer vision, stemming from the distinct differences in viewpoints, poses, and resolutions between high-altitude aerial and ground-based cameras. Existing…

Computer Vision and Pattern Recognition · Computer Science 2024-04-09 Huy Nguyen , Kien Nguyen , Sridha Sridharan , Clinton Fookes

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

Existing aerial Vision-Language Navigation (VLN) methods predominantly adopt a detection-and-planning pipeline, which converts open-vocabulary detections into discrete textual scene graphs. These approaches are plagued by inadequate spatial…

Computer Vision and Pattern Recognition · Computer Science 2026-03-10 Haoyu Tong , Xiangyu Dong , Xiaoguang Ma , Haoran Zhao , Yaoming Zhou , Chenghao Lin

Visual Grounding (VG) aims to utilize given natural language queries to locate specific target objects within images. While current transformer-based approaches demonstrate strong localization performance in standard scene (i.e, scenarios…

Computer Vision and Pattern Recognition · Computer Science 2025-09-09 Jiangnan Xie , Xiaolong Zheng , Liang Zheng

As an important task in intelligent transportation systems, Aerial-Ground person Re-IDentification (AG-ReID) aims to retrieve specific persons across heterogeneous cameras in different viewpoints. Previous methods typically adopt deep…

Computer Vision and Pattern Recognition · Computer Science 2025-10-31 Pingping Zhang , Xiang Hu , Yuhao Wang , Huchuan Lu

Text-to-Image Person Retrieval (TIPR) is a cross-modal matching task designed to identify the person images that best correspond to a given textual description. The key difficulty in TIPR is to realize robust correspondence between the…

Computer Vision and Pattern Recognition · Computer Science 2025-12-30 Hao Yin , Xin Man , Feiyu Chen , Jie Shao , Heng Tao Shen

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
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