激光点云的多功能风洞施工量测与分析

发布时间：2018-11-13 13:37

【摘要】：针对传统皮尺测绘、全站仪在结构复杂的多功能风洞中存在采集作业难、数据精度低、信息不完整等局限性,提出基于高精度、高密度的点云数据开展对风洞施工量测的研究。通过对点云进行预处理及算法的运用,解决风洞数据获取难、信息不完整瓶颈,实现施工量测数据的有效获取及分析。基于点云预处理数据,可获取风洞的二维线划图、立面图、三维信息模型及统计分析等成果;基于点云数据运用算法,能够快速、准确地对风洞内墙面的平整度提取分析,判断施工是否符合要求,这是传统测绘方法无法获取的,验证该技术方法在多功能风洞测量的优越性和必要性。应用结果表明,地面三维激光扫描技术对该风洞的施工量测及建筑信息提取均优于传统方法,成效明显。
[Abstract]:In view of the difficulties of collecting work, low data precision and incomplete information in multi-function wind tunnel with complex structure, the paper puts forward the research of wind tunnel construction measurement based on high precision and high density point cloud data. Through the preprocessing of point cloud and the application of the algorithm, the difficulty of obtaining wind tunnel data and the bottleneck of incomplete information are solved, and the effective acquisition and analysis of construction measurement data are realized. Based on the preprocessing data of point cloud, the results of 2D line drawing, elevation map, 3D information model and statistical analysis of wind tunnel can be obtained. Based on the algorithm of point cloud data, it can quickly and accurately extract and analyze the smoothness of the wall surface in wind tunnel, and judge whether the construction meets the requirements, which can not be obtained by the traditional surveying and mapping method. The superiority and necessity of this technique in multifunctional wind tunnel measurement are verified. The application results show that the construction measurement and building information extraction of the wind tunnel by 3D laser scanning technique are better than the traditional method, and the results are obvious.
【作者单位】：厦门理工学院计算机与信息工程学院;中国科学院城市环境与健康重点实验室中国科学院城市环境研究所;中山大学地理科学与规划学院;
【基金】：国家自然科学基金面上项目(41574011) 福建省自然科学基金面上项目(2016J01199)
【分类号】：TU198

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