中国机械工程 ›› 2010, Vol. 21 ›› Issue (1): 63-66.

• 信息技术 • 上一篇    下一篇

小波变换去噪处理在曲面重构中的应用

杨征宇;夏庆观;缪德建   

  1. 南京工程学院先进数控技术江苏省高校重点建设实验室,南京 210013
  • 出版日期:2010-01-10 发布日期:2010-01-22

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

Yang Zhengyu;Xia Qingguan;Miao Dejian
  

  1. Jiangsu Key Laboratory of Advanced Numerical Control Technology,Nanjing Institute of Technology,Nanjing,210013
  • Online:2010-01-10 Published:2010-01-22

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。

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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

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