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Monitoring of urban dynamics using LiDAR data: Case study of a sector in Bogotá — Colombia

机译:使用LiDAR数据监测城市动态:哥伦比亚波哥大一个部门的案例研究

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This article aims to propose a methodology to monitor the urban dynamics using LIDAR data. The study area corresponds to 12.5ha in the urban sector called Sucre, in the city of Bogotá (Colombia). The methodology proposes the classification and filtering of LiDAR data (acquired in 2009) for the identification of the points corresponding to the soil (which represent the digital terrain model - DTM) and to the buildings (which represent the digital building model - DBM). The digital models created from the LiDAR data are compared with the 3D model created from the reference data corresponding to the cadastral information made by the Cadastre of the city in 2011 (data available at IDECA). Results show three zones of change where new buildings can be evidenced, which were revised using Google Street Maps®. Therefore, it is possible to conclude that the methodology for the generation of the volumetry of the city from LiDAR data is an alternative to arrive at the modeling of the reality that is expected in Cadastre 2034.
机译:本文旨在提出一种使用LIDAR数据监测城市动态的方法。研究区域相当于波哥大(哥伦比亚)城市中称为Sucre的12.5公顷土地。该方法建议对LiDAR数据(2009年获得)进行分类和过滤,以识别与土壤(代表数字地形模型-DTM)和建筑物(代表数字建筑物模型-DBM)相对应的点。将根据LiDAR数据创建的数字模型与根据参考数据创建的3D模型进行比较,该3D模型与对应于2011年城市地籍的地籍信息(可从IDECA获得)相匹配。结果显示了可以证明新建筑物的三个变化区域,这些变化区域已使用Google StreetMaps®进行了修改。因此,可以得出这样的结论:从LiDAR数据生成城市容积量的方法是实现对Cadastre 2034预期的现实建模的一种替代方法。

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