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 aerial-ground domain gap remains a formidable challenge due to extreme viewpoint differences, scale variations, and occlusions. Building upon the achievements of the AG-ReID 2023 Challenge, this paper introduces the AG-VPReID 2025 Challenge - the first large-scale video-based competition focused on high-altitude (80-120m) aerial-ground ReID. Constructed on the new AG-VPReID dataset with 3,027 identities, over 13,500 tracklets, and approximately 3.7 million frames captured from UAVs, CCTV, and wearable cameras, the challenge featured four international teams. These teams developed solutions ranging from multi-stream architectures to transformer-based temporal reasoning and physics-informed modeling. The leading approach, X-TFCLIP from UAM, attained 72.28% Rank-1 accuracy in the aerial-to-ground ReID setting and 70.77% in the ground-to-aerial ReID setting, surpassing existing baselines while highlighting the dataset's complexity. For additional details, please refer to the official website at https://agvpreid25.github.io.
@article{arxiv.2506.22843,
title = {AG-VPReID 2025: Aerial-Ground Video-based Person Re-identification Challenge Results},
author = {Kien Nguyen and Clinton Fookes and Sridha Sridharan and Huy Nguyen and Feng Liu and Xiaoming Liu and Arun Ross and Dana Michalski and Tamás Endrei and Ivan DeAndres-Tame and Ruben Tolosana and Ruben Vera-Rodriguez and Aythami Morales and Julian Fierrez and Javier Ortega-Garcia and Zijing Gong and Yuhao Wang and Xuehu Liu and Pingping Zhang and Md Rashidunnabi and Hugo Proença and Kailash A. Hambarde and Saeid Rezaei},
journal= {arXiv preprint arXiv:2506.22843},
year = {2025}
}