The huge variance of human pose and the misalignment of detected human images signi cantly increase the di culty of person Re-Identi cation (Re-ID). Moreover, e cient Re-ID systems are required to cope with the massive visual data being produced by video surveillance systems. Targeting to solve these problems, this work proposes a Global-Local-Alignment Descriptor (GLAD) and an e cient indexing and retrieval framework, respectively. GLAD explicitly leverages the local and global cues in human body to generate a discriminative and robust representation. It consists of part extraction and descriptor learning modules, where several part regions are rst detected and then deep neural networks are designed for representation learning on both the local and global regions. A hierarchical indexing and retrieval framework is designed to eliminate the huge redundancy in the gallery set, and accelerate the online Re-ID procedure. Extensive experimental results show GLAD achieves competitive accuracy compared to the state-of-theart methods. Our retrieval framework signi cantly accelerates the online Re-ID procedure without loss of accuracy. Therefore, this work has potential to work better on person Re-ID tasks in real scenarios.
Several part regions are first detected and then deep neural networks are designed for representation learning on both the local and global regions REF .
GLAD: Global-Local-Alignment Descriptor for Pedestrian Retrieval
MM '17
Computer Science