图像辅助激光点云的相似材料模型破裂边界提取  

Extraction of fracture boundary of image assisted point cloud similar material model

作　　者：陈朋[1] 汤玉兵 孔庆珠 张以文 

机构地区：[1]中国矿业大学环境与测绘学院,江苏徐州221116 [2]山东省国土测绘院,山东济南250102 [3]山东省淮河流域水利管理局规划设计院,山东济南250100

出　　处：《辽宁工程技术大学学报（自然科学版）》2016年第7期751-754,共4页Journal of Liaoning Technical University (Natural Science)

基　　金：江苏省高校优势学科建设工程项目(SZBF2011-6-B35)

摘　　要：针对现有的相似材料实验观测方法获取破裂区域信息效率低以及数据处理复杂的缺点,根据模型点云呈面分布的特征,提出一种图像辅助激光点云的相似材料模型破裂边界提取方法.将模型点云栅格化生成合成图像,并建立点云与图像像素的映射关系,对合成图像进行灰度二值化处理,利用Canny算子提取二值化后图像的边缘,最后根据点云与像素的映射关系获取点云的破裂边界.研究结果表明:该算法可较好的提取出破裂区域的边界,提取的结果可以用于开采沉陷研究当中.In view of the low efficiency of capturing the failure zone information and the complexity of data process in the existing methods of similar material experiment observation, and based on the planar distribution of the model point cloud data, this paper proposed a method of image assisted point cloud extraction of fracture boundary of similar material, rasterized point cloud and generated synthetic image, then mapped the points in the point cloud to the pixels in the image. After performing gray level process and binary process to the synthetic image, Canny operator was used to extract the edge of the image, then capture the rupture boundary based on the relationship between the synthetic image and the point cloud. The result shows that this method can effectively obtain fractured boundary from point cloud data. And the extracted results can be used in research of mining subsidence.

关 键 词：模型破裂边界 合成图像 点云栅格化 二值化 CANNY算子 

分 类 号：TD171[矿业工程—矿山地质测量]