板带钢表面缺陷检测系统的多尺度边缘检测算法

针对冷轧带钢表面缺陷在在线检测过程中,无法准确地检测到图像中缺陷的边缘问题,提出了一种基于小波变换模极大值的板带钢表面缺陷多尺度边缘检测算法.该方法较好地解决了边缘检测精度与抗噪性能之间的协调问题,实现了在多个尺度上板带钢表面缺陷的边缘提取.实验结果表明该方法对伪缺陷边缘的去除有很好的效果,同时能够较好地保留图像中缺陷的边缘细节信息,具有更好的边缘检测性能,为带钢表面缺陷在线检测系统中的后续处理,如图像自动分割、缺陷识别等奠定了基础.

A Multi-scale Edge Detection Method of Steel Strip Surface Defects Online Detection System

The image edge of steel strip surface defects cannot be detected exactly on-line at present.It is a serious problem to be solved.A wavelet-based maximum modulus algorithm is therefore proposed for edge protection,which can coordinate well the edge detection precision and denoising effect to extract the surface defect edges on multi-scale.Experimental results showed that the new algorithm can exclude well the fault detect edge from detection with the particulars of defect edge kept up,thus providing better e...