B-spline surface fitting by iterative geometric interpolation/approximation algorithms

Yuki Kineri, Mingsi Wang, Hongwei Lin, Takashi Maekawa

Research output: Contribution to journalArticlepeer-review

45 Citations (Scopus)

Abstract

Recently, the use of B-spline curves/surfaces to fit point clouds by iteratively repositioning the B-spline's control points on the basis of geometrical rules has gained in popularity because of its simplicity, scalability, and generality. We distinguish between two types of fitting, interpolation and approximation. Interpolation generates a B-spline surface that passes through the data points, whereas approximation generates a B-spline surface that passes near the data points, minimizing the deviation of the surface from the data points. For surface interpolation, the data points are assumed to be in grids, whereas for surface approximation the data points are assumed to be randomly distributed. In this paper, an iterative geometric interpolation method, as well as an approximation method, which is based on the framework of the iterative geometric interpolation algorithm, is discussed. These two iterative methods are compared with standard fitting methods using some complex examples, and the advantages and shortcomings of our algorithms are discussed. Furthermore, we introduce two methods to accelerate the iterative geometric interpolation algorithm, as well as a method to impose geometric constraints, such as reflectional symmetry, on the iterative geometric interpolation process, and a novel fairing method for non-uniform complex data points. Complex examples are provided to demonstrate the effectiveness of the proposed algorithms.

Original languageEnglish
Pages (from-to)697-708
Number of pages12
JournalCAD Computer Aided Design
Volume44
Issue number7
DOIs
Publication statusPublished - 2012 Jul 1
Externally publishedYes

Keywords

  • Approximation
  • B-spline surfaces
  • Interpolation
  • Iterative geometric fitting algorithm

ASJC Scopus subject areas

  • Computer Science Applications
  • Computer Graphics and Computer-Aided Design
  • Industrial and Manufacturing Engineering

Fingerprint Dive into the research topics of 'B-spline surface fitting by iterative geometric interpolation/approximation algorithms'. Together they form a unique fingerprint.

Cite this