Multimedia Tools and Applications

, Volume 56, Issue 1, pp 155–177

Geotag propagation in social networks based on user trust model

  • Ivan Ivanov
  • Peter Vajda
  • Jong-Seok Lee
  • Lutz Goldmann
  • Touradj Ebrahimi
Article

Abstract

In the past few years sharing photos within social networks has become very popular. In order to make these huge collections easier to explore, images are usually tagged with representative keywords such as persons, events, objects, and locations. In order to speed up the time consuming tag annotation process, tags can be propagated based on the similarity between image content and context. In this paper, we present a system for efficient geotag propagation based on a combination of object duplicate detection and user trust modeling. The geotags are propagated by training a graph based object model for each of the landmarks on a small tagged image set and finding its duplicates within a large untagged image set. Based on the established correspondences between these two image sets and the reliability of the user, tags are propagated from the tagged to the untagged images. The user trust modeling reduces the risk of propagating wrong tags caused by spamming or faulty annotation. The effectiveness of the proposed method is demonstrated through a set of experiments on an image database containing various landmarks.

Keywords

Tag propagation Social networks Object duplicate detection Geotags User trust model IPTC 

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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Ivan Ivanov
    • 1
  • Peter Vajda
    • 1
  • Jong-Seok Lee
    • 1
  • Lutz Goldmann
    • 1
  • Touradj Ebrahimi
    • 1
  1. 1.Multimedia Signal Processing Group (MMSPG), Institute of Electrical Engineering (IEL)Ecole Polytechnique Fédérale de Lausanne (EPFL)LausanneSwitzerland

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