N-tuple Color Segmentation for Multi-view Silhouette Extraction

  • Abdelaziz Djelouah
  • Jean-Sébastien Franco
  • Edmond Boyer
  • François Le Clerc
  • Patrick Pérez
Part of the Lecture Notes in Computer Science book series (LNCS, volume 7576)

Abstract

We present a new method to extract multiple segmentations of an object viewed by multiple cameras, given only the camera calibration. We introduce the n-tuple color model to express inter-view consistency when inferring in each view the foreground and background color models permitting the final segmentation. A color n-tuple is a set of pixel colors associated to the n projections of a 3D point. The first goal is set as finding the MAP estimate of background/foreground color models based on an arbitrary sample set of such n-tuples, such that samples are consistently classified, in a soft way, as ”empty” if they project in the background of at least one view, or ”occupied” if they project to foreground pixels in all views. An Expectation Maximization framework is then used to alternate between color models and soft classifications. In a final step, all views are segmented based on their attached color models. The approach is significantly simpler and faster than previous multi-view segmentation methods, while providing results of equivalent or better quality.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Abdelaziz Djelouah
    • 1
    • 2
  • Jean-Sébastien Franco
    • 2
  • Edmond Boyer
    • 2
  • François Le Clerc
    • 1
  • Patrick Pérez
    • 1
  1. 1.TechnicolorCesson SevigneFrance
  2. 2.LJK - INRIA Rhône-AlpesFrance

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