SURFACE FITTING BASED ON OPTICAL 3-D MEASUREMENT

• Abstract:

  The aim of reverse engineering is to create a computer-aided design (CAD) model of an existing physical object. This paper deals with technology for acquiring measured point data by use of an optical 3-D measuring system. This system is suited for measuring objects, at a high speed and in a high density, which have smooth shapes and character areas with steep slopes. Smooth curves are approximated by fitting non-uniform cubic B-spline curves with curvature taken into consideration. Free-form surfaces in higher-order continuity are derived from the fitted B-spline curves as the boundary curves of patches. A strategy for remeasurement is proposed to extract character areas in order to generate a series of free-form surfaces, and techniques are also proposed to connect fitted B-spline curves with surfaces by use of pseudo vertices. The results of the experiments show that the proposed methods are effective for generating free-form surfaces.
• Keywords:

  optical 3-D measurement, free-form surface, fitting
• Download:

  IMEKO-WC-2000-TC14-P371.pdf
• DOI:

  _unreg_wc-2000.371

Event details:

• IMEKO TC:
• Event name:

  XVI IMEKO World Congress
• Title:

  Measurement - Supports Science - Improves Technology - Protects Environment ... and Provides Employment - Now and in the Future

• Place:

  Vienna, AUSTRIA
• Time:

  25 September 2000 - 28 September 2000