摘要
针对隧道施工、复测和监测过程中中轴线提取的需求,提出基于三维扫描技术的隧道中轴线提取方法,对采集的隧道点云构建格网进行中轴线粗提取,利用Ransac空间拟合椭圆进行中轴线精细化提取,具有速度快、准确度高、适应性广等优点。结合工程实例进行了对比分析,成果完全满足隧道施工、复测及监测等需求,具有一定的应用价值。
In allusion to the demand of central axis line extraction during the tunnel construction,retest and monitoring processes has proposed tunnel central axis line extraction method based on 3D laser scanning technology.To acquired tunnel point cloud structed grid has carried out central axis crude extraction,then throughthe Ransac spatially fitted ellipse carried out refined extraction.The method has strong points of fast speed,high accuracy and wide adaptability etc.Combined with project cases have carried out comparative analysis,thus confirmed the results are fully satisfied tunnel construction,retest and monitoring demands with certain application values.
作者
张健珲
宋袁龙
Zhang Jianhun;Song Yuanlong(Technological Development Research Institute,China Coal Aerial Photogrammetry and Remote Sensing Group Co.Ltd.,Xi’an,Shaanxi 710199)
出处
《中国煤炭地质》
2021年第12期61-64,共4页
Coal Geology of China
关键词
隧道
三维激光扫描技术
三角网
随机抽样一致
点云
tunnel
3D laser scanning technology
triangulation
random sampling consistent
point cloud
