Application of Wavelet Transform Technology to Surface Reconstruction

Journal of Liaoning Petrochemical University ›› 2007, Vol. 27 ›› Issue (1): 81-85.

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Application of Wavelet Transform Technology to Surface Reconstruction

School of Computer and Communication Engineering , Liaoning University of Petroleum &Chemical Technology ,
Fushun Liaoning 113001 , P. R. China

Received:2006-07-05 Published:2007-03-20 Online:2017-07-05

小波变换技术在曲面重构中的应用

李依令, 纪玉波^*

辽宁石油化工大学计算机与通信工程学院, 辽宁抚顺113001

作者简介:李依令(1980 - ), 男, 辽宁抚顺市, 在读硕士。

Abstract

Abstract:

The core technology of reverse engineering is free surfaces reconstruction. Traditionally , surface reconstruction is built directly by using reconstruction data , which control vertexes aren't compressed. So it has a relatively weak data processing ability , and the storage and calculation of data in the reconstruction process is tremendous. A method applying wavelet transform technology , which can reduce the amount of controlling vertexes of cubic quasi - uniform B - spline surfaces, was presented. The amount of control vertexes to reconstruct curved surfaces decreases greatly . The curved surface with its data compressed approximates the original surface shape. Experiment results show that the method implements surfaces'hierarchical compressing , simplifies data processing and reduces the cost of reconstruction and accords with engineering demand.

Key words: Reverse engineering, , Wavelet transform, , B - spline

摘要： 　逆向工程的核心技术是自由曲面重构。传统的逆向工程曲面重构方法是直接重构, 即不对控制顶点进行压缩, 直接利用重构数据。因此数据处理能力较弱, 重构过程中数据的存储量和计算量非常大。对此提出利用小波变换技术减少准均匀三次B 样条曲面控制顶点个数的方法, 使得逆向工程中重构曲面的控制顶点个数大大减少, 并且使压缩后的曲面与原曲面的形状大致相同。实验结果表明本文方法实现了曲面的分级压缩, 简化了数据处理, 降低了重构过程代价, 符合工程实际需求。

关键词: 　逆向工程, , 小波变换, , B 样条

LI Yi - ling,JI Yu - bo . Application of Wavelet Transform Technology to Surface Reconstruction[J]. Journal of Liaoning Petrochemical University, 2007, 27(1): 81-85.

李依令, 纪玉波. 小波变换技术在曲面重构中的应用[J]. 辽宁石油化工大学学报, 2007, 27(1): 81-85.

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Application of Wavelet Transform Technology to Surface Reconstruction

小波变换技术在曲面重构中的应用

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