Enhancing the motion estimate in bundle adjustment using projective newton-type optimization on the manifold

Michel Sarkis, Klaus Diepold, Alexander Schwing

Research output: Contribution to journalConference articlepeer-review

Abstract

Bundle adjustment is a minimization method frequently used to refine the structure and motion parameters of a moving camera. In this work, we present a Newton-based approach to enhance the accuracy of the estimated motion parameters in the bundle adjustment framework. The key issue is to first parameterize the motion variables of a camera on the manifold of the Euclidean motion by using the underlying Lie group structure of the motion representation. Second, it is necessary to formulate the bundle adjustment cost function and derive the corresponding gradient and the Hessian formulation on the manifold using the concepts of differential geometry. This results in a more compact derivation of the Hessian which allows us to use its complete form in the minimization process. Compared to the Levenberg-Marquardt scheme, the proposed algorithm is shown to provide more accurate results while having a comparable complexity although the latter uses an approximate form of the Hessian. The experimental results we performed on simulated and real image sets are evidence that demonstrate our claims.

Original languageEnglish (US)
Article number72510E
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume7251
DOIs
StatePublished - 2009
Externally publishedYes
EventImage Processing: Machine Vision Applications II - San Jose, CA, United States
Duration: Jan 20 2009Jan 22 2009

Keywords

  • Differential geometry
  • Newton method
  • Pose estimation
  • Riemannian manifold
  • Structure from motion

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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