Long-Term Person Re-Identification (LT-ReID) has become increasingly crucial in computer vision and biometrics. In this work, we aim to extend LT-ReID beyond pedestrian recognition to include a wider range of real-world human activities while still accounting for cloth-changing scenarios over large time gaps. This setting poses additional challenges due to the geometric misalignment and appearance ambiguity caused by the diversity of human pose and clothing. To address these challenges, we propose a new approach 3DInvarReID for (i) disentangling identity from non-identity components (pose, clothing shape, and texture) of 3D clothed humans, and (ii) reconstructing accurate 3D clothed body shapes and learning discriminative features of naked body shapes for person ReID in a joint manner. To better evaluate our study of LT-ReID, we collect a real-world dataset called CCDA, which contains a wide variety of human activities and clothing changes. Experimentally, we show the superior performance of our approach for person ReID.

Introduction

Figure 1. Overview of the proposed joint learning framework for long-term person re-identification and 3D clothed body shape reconstruc- tion. During the inference of ReID, the identity shape feature zid is utilized for matching.

Learning Clothing and Pose Invariant 3D Shape Representation for Long-Term Person Re-Identification Source Code

The source code can be downloaded from here

Publications

  • Learning Clothing and Pose Invariant 3D Shape Representation for Long-Term Person Re-Identification
    Feng Liu, Minchul Kim, ZiAng Gu, Anil Jain, Xiaoming Liu
    In Proceeding of International Conference on Computer Vision (ICCV 2023), Paris, France, Oct. 2023
    Bibtex | PDF | arXiv | Code
  • @inproceedings{ learning-clothing-and-pose-invariant-3d-shape-representation-for-long-term-person-re-identification,
      author = { Feng Liu and Minchul Kim and ZiAng Gu and Anil Jain and Xiaoming Liu },
      title = { Learning Clothing and Pose Invariant 3D Shape Representation for Long-Term Person Re-Identification },
      booktitle = { In Proceeding of International Conference on Computer Vision },
      address = { Paris, France },
      month = { October },
      year = { 2023 },
    }