Improving Person Re-Identification with Temporal Constraints

Julia Dietlmeier, Feiyan Hu, Frances Ryan, Noel E. O'Connor, Kevin McGuinness
2022 2022 IEEE/CVF Winter Conference on Applications of Computer Vision Workshops (WACVW)  
In this paper we introduce an image-based person reidentification dataset collected across five non-overlapping camera views in the large and busy airport in Dublin, Ireland. Unlike all publicly available image-based datasets, our dataset contains timestamp information in addition to frame number, and camera and person IDs. Also our dataset has been fully anonymized to comply with modern data privacy regulations. We apply state-of-the-art person reidentification models to our dataset and show
more » ... at by leveraging the available timestamp information we are able to achieve a significant gain of 37.43% in mAP and a gain of 30.22% in Rank1 accuracy. We also propose a Bayesian temporal re-ranking post-processing step, which further adds a 10.03% gain in mAP and 9.95% gain in Rank1 accuracy metrics. This work on combining visual and temporal information is not possible on other image-based person re-identification datasets. We believe that the proposed new dataset will enable further development of person reidentification research for challenging real-world applications.
doi:10.1109/wacvw54805.2022.00060 fatcat:3viltopni5hrncarvoos35fbgy