Left-invariant riemannian geodesics on spatial transformation groups

Ernesto Zacur, Matias Bossa, Salvador Olmos

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Spatial transformations are mappings between locations of a d-dimensional space and are commonly used in computer vision and image analysis. Many of the spatial transformation sets have a group structure and can be represented by matrix groups. In the computer vision and image analysis fields there is a recent and growing interest in performing analyses on spatial transformations data. Differential and Riemannian geometry have been used as a framework to endow the set of spatial transformations with a metric space structure, allowing the extension of the standard analysis techniques defined on vector spaces. This paper presents a review of the concepts and an overview of approaches to computing Riemannian geodesics on spatial transformation groups. The paper is aimed at providing a bridge for research ers from computer vision and image analysis fields to fill in the gap between differential geometry and computer vision and imaging disciplines. Some application examples are shown to illustrat e the use of invariant Riemannian geodesics, such as interpolation of spatial transformations and filtering of matrix-valued images.

Original languageEnglish
Pages (from-to)1503-1557
Number of pages55
JournalSIAM Journal on Imaging Sciences
Volume7
Issue number3
DOIs
Publication statusPublished - 24 Jul 2014

Keywords

  • Left-invariant geodesics
  • Lie groups
  • Riemannian exponential
  • Spatial transformation groups

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