Research on Stitch of Composite Preform Measured Based on the Wavelet Transform
基于小波变换的复合材料预制件花节长度测试研究

The paper discussed application technology about composite material preform stitch measured using wavelet transform. The system is rested on the multi scale analysis of wavelet transform. By selecting appropriate wavelet basis, the surface image of composite material preform may be processed and show ideal information of image edge. When a texture template selected, match point about iamge will be make out by revolution algorithm. Through measuring distance of match point, the stitch of perform may be brought out. When compared with other filtering mode, it proves that wavelet transform can reduce noise while preserving image edge features. The experiments show that tested results are consisted with handiwork. This system proved that it is possible for stitch of composite material preform will be analyzed using wavelet transform.