基于图像处理技术和CT试验的裂纹量化描述

Quantitative Description of Crack Based on the Image Measuring Technique and CT Test

首先对CT试验和基于数学形态学的图像处理技术进行了简单介绍。在此基础上,定义了裂纹的提取方法和判定准则,并在此提取结果的基础上,建立了一套对图像进行信息提取、几何测量和空间描述的量化参数体系。以某砂岩CT试验为例,进行了岩土CT图像量化描述。该方法也探索了一种岩土力学CT试验数据分析的新途径。

The principle of the image measuring technique based on the mathematic morphology and the CT test are briefly presented. On basis of these, the pick-up method of crack and criterion of its determination are defined, then the threshold ξ（equals to 20） is selected. Moreover, a set of quantitative description parameters about information pick-up in the region of interest, geometrical measuring and spatial description are defined. One of sandstone is taken as example to illustrate the quantitative description of the geotechnical CT image based on these techniques. A new analytical way for CT experimental datum of the geotechnical mechanics is developed.