基于小波分析的头盔截面曲线压缩  

Reduction of Cross-sectional Curves for Easier Helmet Design by Wavelet Analysis

作　　者：刘鸿[1] 周宏[2] 李志忠[1] 郑力[1] 

机构地区：[1]清华大学工业工程系,北京100084 [2]总后军需装备研究所士兵系统研究中心,北京100088

出　　处：《兵工学报》2007年第7期872-875,共4页Acta Armamentarii

摘　　要：在曲面修改中常常通过对三向截面曲线簇反复多次地修改达到目的。为简化这一繁琐的过程,提出一种截面曲线压缩算法,减少截面曲线数量。首先对初始截面曲线用普通蒙皮法生成曲面,再对曲面控制顶点进行小波分解,用低分辨部分的控制顶点生成新的截面曲线来代替初始截面曲线。可在满足精度要求情况下,尽量减少截面曲线的数量,减少后续工作量,并可减少因采用蒙皮法重构曲面时带来的数量巨大的控制顶点。头盔表面修改实例表明,该算法简单,易于实现,压缩效率高。The curved surface modification is often conducted by repeatedly modifying the three direction cross-sectional curve cluster of the surface. It is a hard work and needs much experience. An algorithm for reducing cross-sectional curves in curved surface reconstruction was presented. The original cross-sectional curves were given and the curved surface was created by skinning. For replacing the original cross-sectional curves, the new cross-sectional curves were regenerated by the low-resolution control points that are the outcome of the original control points by wavelet decomposition. A new curved surface can be fitted to the lower number of cross-sectional curves by skinning to a given tolerance. The problem of huge amounts of control points produced in curved surface skinning can also be avoided. Helmet design example shows that the algorithm is efficient and easy-to-use.

关 键 词：计算机应用 小波分析 曲面重构 蒙皮法 数据压缩 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]