Determination and mapping of measurement and design coordinate systems using computational geometric techniques

G. L. Samuel, Seung Han Yang

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Automotive industry is one of the most prospective manufacturing industries in the present world. In order to keep up with the challenges of competitors, the automobile industries are taking necessary steps to satisfy the customers by supplying products of good quality at lower cost. The machine vision inspection systems play an important role in quality control with their accurate dimensional measurement capability. The data obtained from these systems have to be analyzed using appropriate algorithms. In the present work, algorithms based on computational geometric techniques have been developed, to set up the coordinate system for the data obtained from the laser vision system for subframe and lower arm assembly of automobile front chassis module. The concept of a convex hull and a modified Voronoi diagram are utilized for establishing the coordinate system for measurement data. The design coordinate system is determined using the Voronoi diagrams. The measurement and design coordinate systems are mapped using 3D transformations. The results obtained for the sample data are also presented in this paper.

Original languageEnglish
Pages (from-to)819-824
Number of pages6
JournalInternational Journal of Advanced Manufacturing Technology
Volume26
Issue number7-8
DOIs
StatePublished - Oct 2005

Keywords

  • Computational geometry
  • Convex hull
  • Coordinate system
  • Machine vision System
  • Voronoi diagram

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