1 INTRODUCTION

2 BACKGROUND
2.1 A Brief Review of Re-ID Before Transformers
2.2 Understanding and Analysis of Transformer

3 TRANSFORMER IN OBJECT RE-ID
3.1 Transformer in Image/Video Based Re-ID
3.2 Transformer in ReID with Limited Data/Annotations
3.3 Transformer in Cross-modal Re-ID
3.4 Transformer in Special Re-ID Scenarios

4 NEW UNSUPERVISED TRANSFORMER BASELINE

5 ANIMAL RE-IDENTIFICATION
5.1 Animal Re-ID Datasets
5.3 A Unified Benchmark for Animal Re-ID

6 CONCLUSION AND FUTURE PROSPECTS
6.1 Under-Investigated Future Prospects
6.2 Summary