基于小波技术的曲面边界光顺及简化算法

Surface boundary shape curve fairing and simplification based on wavelet decomposition

与传统造型方法相比,T样条曲面具有曲面拼接、局部加细、数据简化等特点。基于T样条曲面的非矩形拓扑结构及B样条小波的滤波优势,提出了一种曲面边界光顺及简化算法。与传统方法相比,该算法基于非均匀B样条小波分解,对选定的曲面边界进行光顺,并利用T样条技术减少冗余控制点。最后,给出具体实例以验证算法的有效性和实用性。

This paper proposed an algorithm for boundary shape curve fairing and simplification.Compared with the previous methods,the selected boundary shape curve was faired with non-uniform B-spline wavelets by the new approach without superfluous control points,because T-mesh can be allowed in the result surface.Some examples were also presented in this paper to demonstrate the effectiveness of the new algorithm.