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Optical Engineering

Free-form surface reconstruction for machine vision rapid prototyping
Author(s): Colin H. Bradley; Geoffrey W. Vickers
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Paper Abstract

Prototyping is an essential step in the manufacture of many objects, both consumer and industrial. A fundamental step in this process is the definition of the 3-D form of the object shape, for example, a designer's model created in clay or wood. A 3-D vision system (range sensor) offers the advantage of speed in defining shapes compared to a traditional tactile sensor. The viability of using range sensors is demonstrated by the development of a rapid prototyping system comprised of a laser-based range sensor and software that creates a computer model of the object. One particularly important area of application is the reverse engineering of models comprised of free-form surfaces. This is important in mold and die manufacture for aerodynamic and ergonomic object surfaces. Several methods of modeling free-form surfaces from irregular data are examined and a radial basis function approach is used in developing a self-contained, interactive software package utilizing the laser-generated range data.

Paper Details

Date Published: 1 September 1993
PDF: 10 pages
Opt. Eng. 32(9) doi: 10.1117/12.145064
Published in: Optical Engineering Volume 32, Issue 9
Show Author Affiliations
Colin H. Bradley, Univ. of Victoria (Canada)
Geoffrey W. Vickers, Univ. of Victoria (Canada)

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