CAJ | 학술논문

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.
소파분석이론시일충신흥적신호처리이론,재시간화빈솔상도유흔호적국부성.차조시일빈국부분석특성,소파분석이론이성위신호거조처리적일충중요적공구.개소료소파분석이론재곡면거조중적응용,재소설계적원시곡면상수궤설치조성,대함조성적원시곡면형치점수거진행소파분해,제취저빈분량,재응용UG연건중적NURBS완성곡면중구,병대곡면중구정도진행료분석.
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 surface was reconstructed by NURBS in Unigraphics, and the reconstruction accuracy was finally ana-lyzed.