Abstract
In this paper, 3D model reconstruction on a denture that has undergone the run-in time is studied, using reverse engineering technique. In the stage of surface data acquisition, since the denture has very complicated and irregular contour, a non-contact mode is preferred. In point cloud data pre-processing, salient outliers are manually removed; Gaussian filter is used for noise suppression; curvature-based sampling is adopted for data reduction. In the model reconstruction stage, the surface reconstruction which is based on enclosed triangular Bezier surface patches is used for it can deal with arbitrary shape contours. Then, hole patching, smoothing and reduction are added for refinement of the surface creation. At last, the errors of the whole reconstruction process are measured and evaluated. The results indicate that our reverse engineering work has good performance, which can bring about comfortableness for the use of future dentures by patients.
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