Title
Person Re-ID through unsupervised hypergraph rank selection and fusion
Abstract
Person Re-ID has been gaining a lot of attention and nowadays is of fundamental importance in many camera surveillance applications. The task consists of identifying individuals across multiple cameras that have no overlapping views. Most of the approaches require labeled data, which is not always available, given the huge amount of demanded data and the difficulty of manually assigning a class for each individual. Recently, studies have shown that re-ranking methods are capable of achieving significant gains, especially in the absence of labeled data. Besides that, the fusion of feature extractors and multiple-source training is another promising research direction not extensively exploited. We aim to fill this gap through a manifold rank aggregation approach capable of exploiting the complementarity of different person Re-ID rankers. In this work, we perform a completely unsupervised selection and fusion of diverse ranked lists obtained from multiple and diverse feature extractors. Among the contributions, this work proposes a query performance prediction measure that models the relationship among images considering a hypergraph structure and does not require the use of any labeled data. Expressive gains were obtained in four datasets commonly used for person Re-ID. We achieved results competitive to the state-of-the-art in most of the scenarios.
Year
DOI
Venue
2022
10.1016/j.imavis.2022.104473
Image and Vision Computing
Keywords
DocType
Volume
Person Re-ID,Unsupervised,Hypergraph,Rank,Selection,Fusion
Journal
123
ISSN
Citations 
PageRank 
0262-8856
0
0.34
References 
Authors
0
2
Name
Order
Citations
PageRank
Lucas Pascotti Valem175.80
Daniel Carlos Guimaraes Pedronette200.34