Image-based mesh generation of tubular geometries under circular motion in refractive environments

László Kudela, Felix Frischmann, Ofry E. Yossef, Stefan Kollmannsberger, Zohar Yosibash, Ernst Rank

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

This paper presents an image-based method aimed at generating a mesh of high-order finite elements on a tubular structure. The method assumes that the object is immersed in a liquid with known refractive coefficients and the images are recorded by moving the camera on a circular path around the object. Both the refractive effects and the camera motion are taken into account by a modified bundle adjustment formulation, which allows for an accurate reconstruction even in the presence of the optical interface. A parametric surface is fitted onto the resulting point cloud by an iterative surface fitting algorithm. Finally, the resulting surface is discretized into a mesh of high-order hexahedral elements.

Original languageEnglish
Pages (from-to)719-733
Number of pages15
JournalMachine Vision and Applications
Volume29
Issue number5
DOIs
StatePublished - 1 Jul 2018
Externally publishedYes

Keywords

  • Image-based reconstruction
  • Mesh generation
  • Refractive reconstruction
  • Surface fitting

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