It is generally necessary in 30 scanning to divide a wrap-around object into several regions, each of which is measured individually. A series of pre-processing procedures must be implemented to prepare the data for use for surface reconstruction. Registration is a procedure for unifying the coordinate systems for multiple sets of scan data. Three registration algorithms, 3 points to 3 points, 3 spheres to 3 spheres and 3 planes to 3 planes, are proposed to suit different applications. Data merging is a procedure for removing overlapping data for multiple sets of scan data and for merging them into one set. A data search algorithm, based on triangulation, is combined with a few merging rules to merge the data in terms of different needs. Several experimental results are presented to demonstrate the feasibility of the proposed algorithm.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY