利用三维网格进行数据压缩  

Data Compression with Three-dimension Meshes

作　　者：刘锡国[1] 刘伟哲[2] 

机构地区：[1]吉林大学 [2]河北师范大学

出　　处：《汽车技术》2005年第6期25-28,45,共5页Automobile Technology

摘　　要：逆向工程技术已广泛应用于汽车车身设计中,而数据点压缩是逆向工程中数据点预处理的一个重要环节。在分析常用数据压缩方法的基础上,提出一种以八叉树非均匀细分为基础的三维散乱数据压缩算法,该算法可以处理任何形式的数据点云。介绍了该算法的基础原理、实现过程流程和实现过程具体计算方法。并通过实例进行分析比较,验证了该算法的有效性。Reverse engineering technology has been applied to vehicle body design,and data point compression is an important link of data points pre-process in reverse engineering.Based on analysis of typical data compression methods,one three-dimension scattering data compression algorithm based on octree non-uniform subdivision is presented out.This algorithm can process any type data point clouds.In the paper,the basic principle and realization processes of this algorithm and detail algorithms of its realization process are introduced.By analysis and comparison of an example, its validity is verified.

关 键 词：车身设计 逆向工程 数据压缩 三维网格 

分 类 号：U463.82[机械工程—车辆工程]