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Abstract

In this paper we explore the use of ranking as a mean of guiding unsupervised image segmentation. Starting by the well known Pagerank algorithm we introduce an extension based on quantum walks. Pagerank (rank) can be used to prioritize the merging of segments embedded in uniform regions (parts of the image with roughly similar appearance statistics). Quantum Pagerank, on the other hand, gives high priority to boundary segments. This latter effect is due to the higher order interactions captured by quantum fluctuations. However we found that qrank does not always outperform its classical version. We analyze the Pascal VOC database and give Intersection over Union (IoU) performances.

Keywords

random walks quantum walks ranking segment grouping 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Francisco Escolano
    • 1
    • 2
    • 3
  • Boyan Bonev
    • 1
    • 2
    • 3
  • Edwin R. Hancock
    • 1
    • 2
    • 3
  1. 1.Department of Computer Science and AIUniversity of AlicanteSpain
  2. 2.Department of StatisticsUCLAUSA
  3. 3.Department of Computer ScienceUniversity of YorkUK

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