煤岩CT图像二值化阀值选取及三维重构技术研究

基金项目:

高等学校博士学科点专项科研基金(20100023110001)

详细信息

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

1. School of Mechanics and Architectural Engineer, China University of Mining &Technology (Beijing), Beijing 100083, China;
2. Beijing ZDBP Co., Ltd, Beijing 100083, China;
3. Beijing Sai Bosi Architectural Design Co., Ltd. Beijing 100044, China

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。
- 煤样 /
- CT图像 /
- 二值化 /
- 灰度插值 /
- 三维重构
Abstract: 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.
- coal specimen /
- CT images /
- binarization /
- gray-level interpolation /
- 3D reconstruction