抄録
In reverse engineering, CAD data from ″real industrial objects″ is often computed for comparison with other CAD data or used for its CAE analysis. This greatly helps in analyzing and improving the manufactured object and thus expedites the manufacturing procedure. Thin-plate mechanical objects are often represented as a ″mid-surface with thickness″ in CAD models. Medial surfaces are often used to generate the mid-surfaces, but medial surfaces are branchy due to their definition. They can be trimmed easily which results in a shrunk medial surface. This involves a severe issue in terms of the precision of sizes in reverse engineering. This research presents a method for computing extended medial surfaces from thin-plate voxel objects. Our contribution is to extend medial surfaces so that they are extended to the boundary of the object. Our algorithm finds boundary points of the extended medial voxels by region growing on the boundary voxels of the objects. These extended medial surfaces are useful for reverse engineering applications.
