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首页> 外文期刊>Journal of Construction Engineering and Management >Developing Metrics for Quantifying Buildings' 3D Compactness and Visualizing Point Cloud Data on a Web-Based App and Dashboard
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Developing Metrics for Quantifying Buildings' 3D Compactness and Visualizing Point Cloud Data on a Web-Based App and Dashboard

机译：在基于Web的应用程序和仪表板上了解量化建筑物的3D紧凑性和可视化点云数据的度量

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摘要

Measuring three-dimensional (3D) building expansion and quantifying both horizontal and vertical dimensions in a nonautomated manner may not be possible for big data sets. This paper aims to present novel metrics for measuring both vertical and horizontal developments and to develop a web-based app and a dashboard workflow which identifies differences in the form and scale of buildings. The novel 3D metrics are developed based on the concepts of contact surface and 3D discrete compactness. A workflow was developed exploiting the potential of advanced geographic information system (GIS) functions, along with airborne lidar data processing, to apply the metrics on both a simulation of big data sets and digital building models from point clouds. The database system, including a geo-web-based app, is developed for visualizing 3D compactness computations on a dashboard and sharing the outcome with practitioners using their own smartphones. In the simulation experiment, nine 3D building block types were created, and the computation results were compared with the same size building blocks, which were derived from lidar point cloud data sets. The computation results of both the simulation and airborne lidar data, which included 123 and 127,407 data points, respectively, show that the novel metrics are able to identify differences among the typologies and intermediate 3D patterns. The presented workflow also enables online visualization of the computation output.
机译：测量三维（3D）构建扩展和量化以非自动化方式的水平和垂直尺寸可能不可能进行大数据集。本文旨在提出用于测量垂直和水平开发的新颖度量，并开发基于Web的应用程序和仪表板工作流，该工作流程标识建筑物的形式和规模的差异。基于接触表面和3D离散紧凑性的概念开发了新颖的3D指标。开发了一种工作流程，利用高级地理信息系统（GIS）功能以及机载LIDAR数据处理的潜力，以应用于从点云的大数据集和数字建筑模型的模拟应用指标。包括基于Geo-Web的应用程序的数据库系统，用于在仪表板上可视化3D紧凑性计算，并使用自己的智能手机与从业者分享结果。在模拟实验中，创建了九个3D构建块类型，并将计算结果与相同大小的构建块进行比较，这源自LiDAR点云数据集。分别包括123和127,407个数据点的仿真和机载LIDAR数据的计算结果，表明新颖的度量能够识别类型奖和中间3D模式之间的差异。所呈现的工作流还可以在线可视化计算输出。

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