基于多尺度分析的截面线特征点自动提取及B样条曲线拟合

ccording to a multi-scale coexist section data of curve fitting, put forward a kind of multiscale analysis and remove details combining wavelet reconstruction realize section line denoising and feature point to be automatic identification method, and on this basis to achieve cross-section line fitting. First, according to local shape scale factor section line, divide the cross section into smooth section and wave section. Characteristics at different scales in the corresponding section of the scale were used to remove the details section of the wavelet reconstruction to remove noise, and then to go after the noise the local characteristics of section according to section line curvature, find out the curvature line online significant point and cross section inflection point, the tectonic interpolation in these feature point B spline curve, can be achieved on the original curve fitting. The experimental results show that the constructed curve can eliminate noise, and better able to preserve the original section of line features.