Although Thin-plate spline is a suitable method for morphing a 3D model, the processing time is longer than other methods. In this paper, a scheme using Thin-plate spline to morph the joints of a 3D polygon model is studied. By performing local processing based on the distance, it is shown that high speed and adequate morphing can be carried out. When morphing the joints of a 3D polygon model, an enormous number of control points exist. The number of targets is relatively small. The position of the control point involved with the morphing coefficient is local. Distance-based local control points are selected for each target. The coefficient can be calculated based on this local control points. In this method, the respective morphing coefficient needs to be determined for each target. However, in the scheme for morphing the joints of a 3D polygon model, the number of target vertices is small. Therefore, this method has a higher processing speed than conventional methods. This fact is showed empirically in this paper. Compared to the results with conventional method, this method results in almost the same position of vertices.
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