热轧窄带钢模糊边界的精确求解

Exact solution to fuzzy edge of hot rolled narrow strips

在基于图像处理的非接触式热轧带钢宽度测量中,存在采集图像边缘模糊的情况.由于图像边缘模糊导致边缘检测不准确,从而严重影响宽度测量精度.为了正确定位,消除模糊边缘对测量精度的影响,在分析比较各类边缘算子的基础上,改进了边缘检测算子,提出并应用双模板法,获得了稳定的和较精确的测量结果,并成功地应用于热轧带钢宽度的工业测量.实测证明了双模板法可以比较精确检测出模糊边缘的带钢宽度.

Fuzzy edge images exist in non-contract width measurement of hot rolling strips based on image processing. They would result in inaccurate image edge detecting, which has a bad effect on the accuracy of width measurement. In order to accurately confirm the location of edge and eliminate the impact of fuzzy edge on the accuracy of width measurement, edge operators were developed, and a dual-template method was presented and applied based on the analysis and comparison of various operators. The new method was successfully applied to measure the width of hot rolling strips on line, and steady and exacter measuring results were gained. It was verified by experiments that the dual-template method can accurately measure the width of hot rolling strips whose im- ages edge is fuzzy.