基于Hough变换的金刚石颗粒测量方法研究  

Research on Measurement Method for Diamond Particles Based on Hough Transform

作　　者：郭树青[1] 赵凤霞[1] 张琳娜[1] 郑鹏[1] 

机构地区：[1]郑州大学机械工程学院,郑州450001

出　　处：《计算机测量与控制》2015年第10期3260-3263,共4页Computer Measurement &Control

基　　金：河南省教育厅自然科学研究计划项目(2010B460020);河南省教育厅科学技术研究重点项目(13B460384)

摘　　要：针对金刚石颗粒图像分析时的颗粒边缘非闭合性问题,提出了一种基于Hough变换的金刚石颗粒测量新方法;该方法首先对图像进行形态学去噪、平滑滤波和Canny边缘检测等预处理,得到金刚石颗粒图像的初始边缘曲线,然后采用Hough变换提取边缘曲线的直线特征,并通过极径和极角对多个直线特征进行判断和图形识别,得到确定的金刚石颗粒边缘轮廓,最后对得到的边缘轮廓进行拟合,测量出金刚石颗粒的粒径、椭圆度和圆度等参数大小;该方法在VC++环境下,用OpenCV编程技术对其进行了实验验证,结果表明:该方法可以准确快速地测量出金刚石颗粒特征参数,为金刚石颗粒的等级评定提供了技术支持。For solving the problem of unclosed image edge of diamond particle, a new measurement method for diamond particles based on Hough transform is proposed. First of all, the images are preprocessed by morphological denoising, smoothing and Canny edge detec tion, and the initial edge curves of the diamond particle image can be obtained. Secondly, Hough transform is applied to extract straight-- line features of edge curves, and multiple straight--line features is estimated and graphically recognized by the polar radius and polar angle for the edge contour of diamond particles. Finally, the resulting edge profile is fitted, and the parameters of diamond particles, such as particle size, ovality and roundness, and so on, can be measured. This method has been experimentally verified in VC＋＋ environment with OpenCV. The results show that diamond particles characteristic parameters can be measured quickly and accurately by using this method.

关 键 词：HOUGH变换 金刚石颗粒 测量 边缘检测 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]