Person Re-Identification by Descriptive and Discriminative Classification

Martin Hirzer, Peter Roth, Csaba Beleznai, Horst Bischof

Research output: Chapter in Book/Report/Conference proceedingConference paperpeer-review


Person re-identification, i.e., recognizing a single person across spatially disjoint cameras, is an important task in visual surveillance. Existing approaches either try to find a suitable description of the appearance or learn a discriminative model. Since these different representational strategies capture a large extent of complementary information we propose to combine both approaches. First, given a specific query, we rank all samples according to a feature-based similarity, where appearance is modeled by a set of region covariance descriptors. Next, a discriminative model is learned using boosting for feature selection, which provides a more specific classifier. The proposed approach is demonstrated on two datasets, where we show that the combination of a generic descriptive statistical model and a discriminatively learned feature-based model attains considerably better results than the individual models alone. In addition, we give a comparison to the state-of-the-art on a publicly available benchmark dataset.
Original languageEnglish
Title of host publicationProceedings of the Scandinavian Conference on Image Analysis (SCIA)
Publication statusPublished - 2011
EventScandinavian Conference on Image Analysis - Ystad Saltsjöbad, Sweden
Duration: 23 May 201127 May 2011


ConferenceScandinavian Conference on Image Analysis
CityYstad Saltsjöbad

Fields of Expertise

  • Information, Communication & Computing


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