From silhouettes to 3D points to mesh: towards free viewpoint video

  • Authors:
  • Jordi Salvador;Xavier Suau;Josep R. Casas

  • Affiliations:
  • Technical University of Catalonia, Barcelona, Spain;Technical University of Catalonia, Barcelona, Spain;Technical University of Catalonia, Barcelona, Spain

  • Venue:
  • Proceedings of the 1st international workshop on 3D video processing
  • Year:
  • 2010

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Abstract

This paper presents a system for 3D reconstruction from video sequences acquired in multi-camera environments. In particular, the 3D surfaces of foreground objects in the scene are extracted and represented by polygon meshes. Three stages are concatenated to process multi-view data. First, a foreground segmentation method extracts silhouettes of objects of interest. Then, a 3D reconstruction strategy obtains a cloud of oriented points that lie on the surfaces of the objects of interest in a spatially bounded volume. Finally, a fast meshing algorithm provides a topologically correct interpolation of the surface points that can be used for both visualization and further mesh processing purposes. The quality of the results (computational load) obtained by our system compares favorably against a baseline system built from state-of-the-art techniques for similar processing times (quality of the results).