基于Gauss小波的焊缝检测技术

Research on Technology of Detecting Welding Seam Based on Gauss Wavelet

关键词:  Gauss小波  边沿检测  焊缝  相关分析

Key words:  Gauss wavelet  edge detection  welding seam  correlation analysis

摘要:

在小波边沿检测技术的基础上,提出了一种基于Gauss小波的焊缝检测的新技术。由于Gauss小波在时域和频域都具有很好的局部性,很适合于检测信号的局部形态。文章主要涉及到焊缝图像信号的预处理、Gauss小波函数及其在焊缝检测中的应用、检测结果的相关分析等。小波尺度对变换结果有很大的影响,文章对此进行了分析和比较。仿真结果表明,该方法检测精度高,抗干扰性能好,计算复杂度小,可靠性高,可以应用到实时控制中去。

Abstract:

Based on the technology of edge detection by wavelet transform,a new method of detecting seam of welding pipe using Gauss wavelet is proposed.As Gauss wavelet has local characteristics on the time and frequency domain,it is suitably used to detect the local shape of a signal as welding seam.The paper mainly relates to the pretreatment of the seam image,the Gauss wavelet transform and its application on the detecting welding seam,and the correlation analysis on the ultimate results.The scale parameter has outstanding effects on the transform results.By the analysis and the simulation on computer,the method shows higher estimated precision and better capability of anti disturb.In the other hand,its complication is not high.So it can be used into real time control system.