三维激光扫描技术在震害调查中的应用
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摘要
三维激光扫描技术是近年发展起来的一门新技术。作为获取空间数据的有效手段,该技术以其快速、精确、无接触测量等优势在众多领域发挥着越来越重要的作用。本文简要介绍了三维激光扫描仪的基本原理及工作流程,并以芦山7.0级地震为例回顾了该仪器在震害调查中的应用情况和现场工作特点,对破坏后实景建筑物点云数据的收集、拼接、分析处理及三维虚拟重现进行了实践和研究,最后分析并探讨了该仪器在地震应急及科学考察中的应用前景。
Three-dimensional(3D)laser scanning technology has been developed in recent years. As an effective means of collecting spatial data, this technology plays an increasingly important role in many fields, with its fast,accurate, non-contact measurement and other advantages. This article briefly introduces the principle and workflow of three-dimensional laser scanner. A case study of Lushan 7.0 Earthquake is provided to summerize the equipment's application in seismic damage survey and its work characteristic in post-earthquake field. Based on this,practical studies have been carried out on the collection, splice, process and virtual reproduction of point cloud data of real damaged buildings. Furthermore, the potential applications of the instrument are also discussed with the earthquake emergency and scientific investigation.
引文
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