| 基于小波变换和NURBS的自由曲面重构的去噪处理 |
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| 引用本文： | 杨征宇,夏庆观,缪德建. 基于小波变换和NURBS的自由曲面重构的去噪处理[J]. 模具技术, 2009, 0(4): 5-9 |
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| 作者姓名： | 杨征宇 夏庆观 缪德建 |
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| 作者单位： | 南京工程学院,先进数控技术江苏省高校重点建设实验室,江苏,南京,211167 |
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| 基金项目： | 江苏省教育厅自然科学基金 |
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| 摘 要： | 小波分析理论是一种新兴的信号处理理论，在时间和频率上都有很好的局部性。借助时一频局部分析特性，小波分析理论已成为信号去噪处理的一种重要的工具。介绍了小波分析理论在曲面去噪中的应用，在所设计的原始曲面上随机设置噪声，对含噪声的原始曲面型值点数据进行小波分解，提取低频分量，再应用UG软件中的NURBS完成曲面重构，并对曲面重构精度进行了分析。
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| 关 键 词： | 逆向工程 曲面重构 小波分解 NURBS |
The de-noise processing in free-form surface reconstruction based on wavelet transform and NURBS |
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| YANG Zheng-yu,XIA Qing-guan,MIAO De-jian. The de-noise processing in free-form surface reconstruction based on wavelet transform and NURBS[J]. Die and Mould Technology, 2009, 0(4): 5-9 |
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| Authors: | YANG Zheng-yu XIA Qing-guan MIAO De-jian |
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| Abstract: | Wavelet analysis theory is a new theory in signal processing and performs well in local analysis in both frequency and time domains.Due to the advantage in time-frequency analysis,wavelet analysis has played a particularly important role in signal de-noising.The application of wavelet analysis in surface de-noising was introduced in this paper.Wavelet analysis of original surface was carried out,on which a large amount of noises were added randomly,and lower frequency components were then extracted.Thus the... |
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| Keywords: | NURBS reverse engineering surface reconstruction wavelet analysis NURBS |
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