European Conference on Computer Vision

ECCV 2012: Computer Vision – ECCV 2012 pp 242-255

Coregistration: Simultaneous Alignment and Modeling of Articulated 3D Shape

  • David A. Hirshberg
  • Matthew Loper
  • Eric Rachlin
  • Michael J. Black
Conference paper

DOI: 10.1007/978-3-642-33783-3_18

Volume 7577 of the book series Lecture Notes in Computer Science (LNCS)
Cite this paper as:
Hirshberg D.A., Loper M., Rachlin E., Black M.J. (2012) Coregistration: Simultaneous Alignment and Modeling of Articulated 3D Shape. In: Fitzgibbon A., Lazebnik S., Perona P., Sato Y., Schmid C. (eds) Computer Vision – ECCV 2012. ECCV 2012. Lecture Notes in Computer Science, vol 7577. Springer, Berlin, Heidelberg

Abstract

Three-dimensional (3D) shape models are powerful because they enable the inference of object shape from incomplete, noisy, or ambiguous 2D or 3D data. For example, realistic parameterized 3D human body models have been used to infer the shape and pose of people from images. To train such models, a corpus of 3D body scans is typically brought into registration by aligning a common 3D human-shaped template to each scan. This is an ill-posed problem that typically involves solving an optimization problem with regularization terms that penalize implausible deformations of the template. When aligning a corpus, however, we can do better than generic regularization. If we have a model of how the template can deform then alignments can be regularized by this model. Constructing a model of deformations, however, requires having a corpus that is already registered. We address this chicken-and-egg problem by approaching modeling and registration together. By minimizing a single objective function, we reliably obtain high quality registration of noisy, incomplete, laser scans, while simultaneously learning a highly realistic articulated body model. The model greatly improves robustness to noise and missing data. Since the model explains a corpus of body scans, it captures how body shape varies across people and poses.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • David A. Hirshberg
    • 1
  • Matthew Loper
    • 1
  • Eric Rachlin
    • 1
  • Michael J. Black
    • 1
  1. 1.Max Planck Institute for Intelligent SystemsTübingenGermany