Person Re-Identification by Mid-Level Attribute and Part-Based Identity Learning

Abstract

Existing deep models using attributes usually take global features for identity classification and attribute recognition. However, some attributes exist in local position, such as a hat and shoes, therefore global feature alone is insufficient for person representation. In this work, we propose to use the attribute recognition as an auxiliary task for person re-identification. The attributes are recognised from the local regions of mid-level layers. Besides, we extract local features and global features from a high-level layer for identity classification. The mid-level attribute learning improves the discrimination of high-level features, and the local feature is complementary to the global feature. We report competitive results on two large-scale person re-identification benchmarks, Market-1501 and DukeMTMC-reID datasets, which demonstrate the effectiveness of the proposed method.