Lightweight Multi-Branch Network for Person Re-Identification

26 Jan 2021  ·  Fabian Herzog, Xunbo Ji, Torben Teepe, Stefan Hörmann, Johannes Gilg, Gerhard Rigoll ·

Person Re-Identification aims to retrieve person identities from images captured by multiple cameras or the same cameras in different time instances and locations. Because of its importance in many vision applications from surveillance to human-machine interaction, person re-identification methods need to be reliable and fast. While more and more deep architectures are proposed for increasing performance, those methods also increase overall model complexity. This paper proposes a lightweight network that combines global, part-based, and channel features in a unified multi-branch architecture that builds on the resource-efficient OSNet backbone. Using a well-founded combination of training techniques and design choices, our final model achieves state-of-the-art results on CUHK03 labeled, CUHK03 detected, and Market-1501 with 85.1% mAP / 87.2% rank1, 82.4% mAP / 84.9% rank1, and 91.5% mAP / 96.3% rank1, respectively.

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Results from the Paper


Task Dataset Model Metric Name Metric Value Global Rank Result Benchmark
Person Re-Identification CUHK03 detected LightMBN (w/o ReRank) MAP 82.4 # 3
Rank-1 84.9 # 3
Person Re-Identification CUHK03 labeled LightMBN (w/o ReRank) MAP 85.1 # 4
Rank-1 87.2 # 2
Person Re-Identification Market-1501 LightMBN mINP 0.50 # 1
Person Re-Identification Market-1501 LightMBN (RR) Rank-1 96.8 # 7
mAP 95.3 # 6
Person Re-Identification Market-1501 LightMBN (w/o ReRank) Rank-1 96.3 # 15
mAP 91.5 # 26

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