泥岩扫描电子显微镜图像的微观参数特征

岩石的工程性质大多取决于岩石的微观结构。在使用扫描电子显微镜（SEM）获得泥岩微观图像基础上,将图像进行灰度化和二值化处理,使用Canny边缘检测技术得到了泥岩微观图像中颗粒的分布情况,获得了扁圆度、圆形度、离散指数、内切圆半径等泥岩颗粒形状特征参数,并进行了相关性分析。计算过程通过编译MATLAB应用程序实现。结果表明:泥岩面积和短轴长度等参数之间具有很好的相关性;圆形度和等效直径等参数之间具有较好的相关性;而其它一些参数之间则不具有相关性。

Microscopic Features of Mudstone Images from Scanning Electron Microscopy

Mudstone has the engineering properties depending on its microstructure. For the microstructure images of mudstone from scanning electron microscopy (SEM), graying and binary processing were conducted, through which the particle distribution in the images may be obtained by Canny edge detection technique, furthermore the particle shape feature parameters of mudstone, such as, oblateness, circularity, dispersion index, radius of inscribe circle, were obtained as well. Then the correlation between these parameters was analyzed, with the calculation implemented by compiling MATLAB application program. The results show that some parameters, such as area and minor axis, have strong correlation; some parameters, such as circularity and equivalent diameter, have good correlation; while among other parameters, there is no correlation.