Cross-domain person reidentification using domain adaptation ranking SVMs

Andy J. Ma, Jiawei Li, Pong Chi YUEN*, Ping Li

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

85 Citations (Scopus)


This paper addresses a new person reidentification problem without label information of persons under nonoverlapping target cameras. Given the matched (positive) and unmatched (negative) image pairs from source domain cameras, as well as unmatched (negative) and unlabeled image pairs from target domain cameras, we propose an adaptive ranking support vector machines (AdaRSVMs) method for reidentification under target domain cameras without person labels. To overcome the problems introduced due to the absence of matched (positive) image pairs in the target domain, we relax the discriminative constraint to a necessary condition only relying on the positive mean in the target domain. To estimate the target positive mean, we make use of all the available data from source and target domains as well as constraints in person reidentification. Inspired by adaptive learning methods, a new discriminative model with high confidence in target positive mean and low confidence in target negative image pairs is developed by refining the distance model learnt from the source domain. Experimental results show that the proposed AdaRSVM outperforms existing supervised or unsupervised, learning or non-learning reidentification methods without using label information in target cameras. Moreover, our method achieves better reidentification performance than existing domain adaptation methods derived under equal conditional probability assumption.

Original languageEnglish
Article number7018030
Pages (from-to)1599-1613
Number of pages15
JournalIEEE Transactions on Image Processing
Issue number5
Early online date22 Jan 2015
Publication statusPublished - May 2015

Scopus Subject Areas

  • Software
  • Computer Graphics and Computer-Aided Design

User-Defined Keywords

  • adaptive learning
  • domain adaptation
  • Person re-identification
  • ranking SVMs
  • target positive mean


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