Application on De-noise Processing of Wavelet Transform in Free-form Surface Reconstruction

Abstract

Abstract:

The application of wavelet transform in surface reconstruction de-noising was presented, and the offset points over the constructed original surface were wavelet-decomposed.Thus the lower frequencies of wavelet were extracted, and de-noise processing of wavelet transform was realized.The surface was reconstructed by NURBS of UG, and the precision and efficiency of the reconstruction was examined. Engineering examples prove that this method of de-noising is valid.

Key words: reverse engineering, surface reconstruction, wavelet analysis, NURBS

摘要：

介绍了小波变换去噪在曲面重构中的应用，首先对含噪声的原始曲面型值点数据进行小波分解，以提取小波低频分量，实现小波变换去噪处理，然后应用UG软件中的NURBS进行曲面重构。采用工程实例对小波去噪方法在曲面重构中的应用进行了验证，结果表明该方法能够提高曲面重构的精度与效率。

关键词:

逆向工程;曲面重构;小波分解, NURBS

CLC Number:

TP391

YANG Zheng-Yu, JIA Qiang-Guan, JIU De-Jian.

Application on De-noise Processing of Wavelet Transform in Free-form Surface Reconstruction

[J]. China Mechanical Engineering, 2010, 21(1): 63-66.

杨征宇, 夏庆观, 缪德建.

小波变换去噪处理在曲面重构中的应用

[J]. 中国机械工程, 2010, 21(1): 63-66.

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