NEW METHOD FOR FREE-FORM SURFACE FITTING IN PRECISION METROLOGY

Hoang D. Minh, Alistair B. Forbes

Abstract

To assess if a given manufactured artifact conform to a template CAD model, the artifact is measured by a coordinate measuring system to obtain a point cloud. The point cloud is compared to the CAD model by fitting the point cloud to the CAD model. One of approaches is based on a method required to determine footpoint parameters.<BR />The footpoints are the projection of the points in the point cloud onto the CAD surface. In this paper we introduce a new efficient method for estimating footpoint parameters.

Keywords

CAD model, point cloud fitting, footpoint parameter, free-form

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DOI

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