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Invariance Matters: Exemplar Memory for Domain Adaptive Person Re-Identification

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Zhong, Zhun, Zheng, Liang, Luo, Zhiming, Li, Shaozi, Yang, Yi·2019·2019 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)

Abstract

This paper considers the domain adaptive person re-identification (re-ID) problem: learning a re-ID model from a labeled source domain and an unlabeled target domain. Conventional methods are mainly to reduce feature distribution gap between the source and target domains. However, these studies largely neglect the intra-domain variations in the target domain, which contain critical factors influencing the testing performance on the target domain. In this work, we comprehensively investigate into the intra-domain variations of the target domain and propose to generalize the re-ID model w.r.t three types of the underlying invariance, i.e., exemplar-invariance, camera-invariance and neighborhood-invariance. To achieve this goal, an exemplar memory is introduced to store features of the target domain and accommodate the three invariance properties. The memory allows us to enforce the invariance constraints over global training batch without significantly increasing computation cost. Experiment demonstrates that the three invariance properties and the proposed memory are indispensable towards an effective domain adaptation system. Results on three re-ID domains show that our domain adaptation accuracy outperforms the state of the art by a large margin. Code is available at: https://github.com/zhunzhong07/ECN.

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Metadata

Authors
Zhong, Z., Zheng, L., Luo, Z., Li, S., & Yang, Y.
Venue
2019 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)
Publisher
IEEE
Published
2019-06
Pages
598-607
ISSN
1063-6919 (ISSN-L)
OpenAlex
W2962859295
Cited by
685
References
41
FWCI
36.94
Type
conference paper
Language
en
Open access
green

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CoChat. (2026). Citation check: Invariance Matters: Exemplar Memory for Domain Adaptive Person Re-Identification. https://app.cochat.ai/papers/10.1109/cvpr.2019.00069
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Zhong, Z., Zheng, L., Luo, Z., Li, S., & Yang, Y. (2019). Invariance Matters: Exemplar Memory for Domain Adaptive Person Re-Identification. 2019 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR). https://doi.org/10.1109/cvpr.2019.00069

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