21810 articles – 15605 references  [version française]

hal-00522667, version 1

A local technique based on vectorized surfaces for craniofacial reconstruction

Françoise Tilotta () 1, Joan Alexis Glaunès () 2, Frédéric Richard () 2, Yves Rozenholc (, http://www.math-info.univ-paris5.fr/~rozen) 2

Forensic Science International 200, 1-3 (2010) 50-59

Abstract: In this paper, we focus on the automation of facial reconstruction. Since they consider the whole head as the object of interest, usual reconstruction techniques are global and involve a large number of parameters to be estimated. We present a local technique which aims at reaching a good trade-off between bias and variance following the paradigm of non-parametric statistics. The estimation is localized on patches delimited by surface geodesics between anatomical points of the skull. The technique relies on a continuous representation of the individual surfaces embedded in the vectorial space of extended normal vector fields. This allows to compute deformations and averages of surfaces. It consists in estimating the soft-tissue surface over patches. Using a homogeneous database described in [31], we obtain results on the chin and nasal regions with an average error below 1 mm, outperforming the global reconstruction techniques.

  • 1:  Laboratory of Functional Anatomy
  • Université Paris V - Paris Descartes
  • 2:  Mathématiques appliquées Paris 5 (MAP5)
  • CNRS : UMR8145 – Université Paris V - Paris Descartes
  • Domain : Engineering Sciences/Signal and Image processing
    Computer Science/Signal and Image Processing
  • Keywords : Facial reconstruction – Anatomical landmarks – Surface registration – Extended vector fields – Geodesics – Kernel estimation – Non-parametric statistics
 
  • hal-00522667, version 1
  • oai:hal.archives-ouvertes.fr:hal-00522667
  • From: 
  • Submitted on: Friday, 1 October 2010 13:35:00
  • Updated on: Friday, 1 October 2010 13:35:00