A parametric approach towards semi-automated 3D as-built modeling

IF 3.6 Q1 ENGINEERING, CIVIL
Yu-Chen Lee, Jong Won Ma, Fernanda Leite
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引用次数: 0

Abstract

Building Information Modeling (BIM) has been developed in response to the growing complexity of construction projects. BIM implementation is beneficial throughout the entire building life cycle, and thus has been widely adopted in new projects. However, BIM implementation in existing buildings is impeded by the lack of as-built models. Conventionally, three-dimensional (3D) as-built BIMs are generated by experienced modelers, which is time-consuming and error-prone. To cater to the need, Scan-to-BIM is a solution for automation in as-built BIM generation. In the context of automated Scan-to-BIM, the parametric modeling process is worth investigating as it has the ability to not only reconstruct 3D objects from a variety of categories from point clouds but also offer flexibility to update objects simply by changing the values of the correlative parameters. Hence, this study proposes a semi-automated framework for assisting 3D as-built modeling through a parametric modeling approach. The presented methodology starts with wall boundary parameter extraction through 3D to 2D projection of the wall segments and line detection techniques, followed by retrieving geometric parameters of all other non-wall elements via CloudCompare. The extracted parameters are structured into a Microsoft® Excel® file and fed into Autodesk® Dynamo for 3D BIM creation using a series of designed logic. To substantiate the viability, the proposed framework is employed in two datasets containing structural, architectural, furniture, mechanical, and plumbing objects (further categorized into structural, hosted and non-hosted elements). The Intersection over Union (IoU) of structural elements was 96.35%, while the root-mean-square error (RMSE) of hosted and non-hosted elements was 3.634 and 2.607 mm, respectively. This study established a universal methodology for semi-automated 3D as-built modeling that can guide future research.
半自动三维竣工建模的参数化方法
建筑信息模型(BIM)是为应对日益复杂的建筑项目而开发的。BIM 的实施有益于整个建筑生命周期,因此已被新项目广泛采用。然而,由于缺乏竣工模型,BIM 在现有建筑中的应用受到阻碍。传统的三维(3D)竣工 BIM 是由经验丰富的建模师生成的,既耗时又容易出错。为满足这一需求,扫描到 BIM 是一种自动生成竣工 BIM 的解决方案。在自动扫描到 BIM 的背景下,参数化建模过程值得研究,因为它不仅能从点云重建各种类别的三维物体,还能通过改变相关参数值灵活地更新物体。因此,本研究提出了一种半自动化框架,通过参数化建模方法辅助三维竣工建模。所提出的方法首先是通过墙体线段的三维到二维投影和线检测技术提取墙体边界参数,然后通过 CloudCompare 检索所有其他非墙体元素的几何参数。提取的参数被编入 Microsoft® Excel® 文件,并通过一系列设计逻辑输入 Autodesk® Dynamo 进行三维 BIM 创建。为了证实该框架的可行性,我们在两个数据集中使用了该框架,其中包含结构、建筑、家具、机械和管道对象(进一步分为结构、托管和非托管元素)。结构元素的 "交集大于联合"(IoU)率为 96.35%,而托管和非托管元素的均方根误差(RMSE)分别为 3.634 毫米和 2.607 毫米。这项研究为半自动化三维竣工建模建立了一种通用方法,可为今后的研究提供指导。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
6.90
自引率
8.60%
发文量
44
审稿时长
26 weeks
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