COORDINATE MEASUREMENTS OF COMPLEX-SHAPE SURFACES

Andrzej Werner, Malgorzata Poniatowska

Abstract

The article presents issues connected with coordinate measurements of spatial surfaces. These measurements are presented on the example of carrying out the reverse engineering process of objects described with the use of free surface patches. The introduction to the article comprises a presentation of the B-spline method. This method has been applied to constructing geometric models of the reconstructed surfaces. Moreover, the introduction presents a method of constructing a surface patch on the basis of a cloud of points in space. Further in the article, a practical implementation of the methodology of reconstructing objects described with the use of complex shape surface patches has been presented. The methodology includes subsequent object measurements and reconstructing the object's geometric model, and concentrates on the possibly most accurate reconstruction of the shapes and dimensions of the researched object. While performing the reverse engineering process, the issues connected with selecting the best measurement strategy adjusted to the class of the reconstructed object as well as to the assumed geometric modelling method are discussed.

Keywords

reverse engineering, surface, measurement

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IMEKO-WC-2009-TC14-168.pdf

DOI

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IMEKO TC

TC14 - Measurement of Geometrical Quantities

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