Person Reidentification via Unsupervised Cross-View Metric Learning
Person Reidentification via Unsupervised Cross-View Metric Learning
复制标题
通过无监督的跨视图度量学习进行人员重新识别
DOI:
10.1109/tcyb.2019.2909480
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发表时间:
2019-04
影响因子:
11.8
通讯作者:
Xiaoqiang Lu
中科院分区:
文献类型:
--
作者:
Yachuang Feng;Yuan Yuan;Xiaoqiang Lu
Person reidentification (Re-ID) aims to match observations of individuals across multiple nonoverlapping camera views. Recently, metric learning-based methods have played important roles in addressing this task. However, metrics are mostly learned in supervised manners, of which the performance relies heavily on the quantity and quality of manual annotations. Meanwhile, metric learning-based algorithms generally project person features into a common subspace, in which the extracted features are shared by all views. However, it may result in information loss since these algorithms neglect the view-specific features. Besides, they assume person samples of different views are taken from the same distribution. Conversely, these samples are more likely to obey different distributions due to view condition changes. To this end, this paper proposes an unsupervised cross-view metric learning method based on the properties of data distributions. Specifically, person samples in each view are taken from a mixture of two distributions: one models common prosperities among camera views and the other focuses on view-specific properties. Based on this, we introduce a shared mapping to explore the shared features. Meanwhile, we construct view-specific mappings to extract and project view-related features into a common subspace. As a result, samples in the transformed subspace follow the same distribution and are equipped with comprehensive representations. In this paper, these mappings are learned in an unsupervised manner by clustering samples in the projected space. Experimental results on five cross-view datasets validate the effectiveness of the proposed method.
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DOI:
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2016 IEEE Conference on Computer Vision and Pattern Recognition (CVPR)
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影响因子:
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DOI:
10.1109/icpr.2016.7900161
发表时间:
2016-12
期刊:
2016 23rd International Conference on Pattern Recognition (ICPR)
影响因子:
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