煤岩CT图像二值化阀值选取及三维重构技术研究  

CT Image Binarization Threshold Selection of Coal and 3D Reconstruction Technology Research

作　　者：张青成 王万富 左建民 毛灵涛[1] 刘殿书[1] 

机构地区：[1]中国矿业大学(北京)力学与建筑工程学院,北京100083 [2]北京中大爆破工程有限公司,北京100083 [3]北京赛博思建筑设计有限公司,北京100044

出　　处：《CT理论与应用研究（中英文）》2014年第1期45-51,共7页Computerized Tomography Theory and Applications

基　　金：高等学校博士学科点专项科研基金(20100023110001)

摘　　要：运用工业CT实验系统(简称为DT-3)对煤样完成单轴加载实验,并对煤样进行一系列断层扫描,获取到不同截面处的破坏CT图像。基于图像分割技术,对图像的灰度级别设定不同的二值化阀值,得出不同阀值下的孔隙面积变化曲线图;并提出以拐点处对应的阀值作为裂隙图像二值化阀值时效果最佳。由上述研究结果结合灰度线性加权平均插值方法,编程实现了煤岩CT图像的三维重构,为后续研究煤岩裂隙三维表征提供了科学依据。Completion of the uniaxial loading experiments using industrial CT experimental system of coal samples （DT-3）, and carried out a series of coal specimen tomography, accessed to the different cross-sections at the destruction of CT images. Based on image segmentation technology, the image gray level set different binarization threshold, the threshold under different pore size change curve, and puts forward to a turning point in the corresponding threshold as a slit image binarization threshold. By the threshold and the gray linear weighted average method, the coal is realized the 3D reconstruction of CT images by the Matlab software programming, and it providies a scientific basis in order to study of coal fracture 3D representation.

关 键 词：煤样 CT图像 二值化 灰度插值 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]