.png){kind=icon}
返回
A two-stage recursive ray tracing algorithm to automatically identify external building objects in building information models
.png){kind=icon}
PRE
AI
DOI：10.1111/mice.12776.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
The internal or external attribute of building information modeling (BIM) objects is vital information for many BIM-based engineering analyses such as building energy analysis and cost estimation. Unfortunately, such information is often inaccurate, incomplete, or missing entirely in most BIM models. Manually checking, correcting, or inputting this data for large-scale BIM models can be time-consuming, laborious, and error-prone. This study proposes a two-stage ray tracing algorithm to automatically identify external BIM objects, based on the idea that external objects of a building can be viewed from somewhere outside the building. The first-stage ray tracing samples viewpoints from the six faces of an offset axis-aligned bounding box (AABB) of the building and emits a ray for each viewpoint to detect relevant external objects. The second-stage ray tracing recursively searches for any remaining external objects from the view of the external objects that have been detected in the previous round of ray tracing. Both stages are carefully designed for efficiency. Furthermore, a two-tier AABB tree is introduced to spatially index building objects on both model and object levels to accelerate relevant geometry operations. The proposed algorithm is validated with one synthetic and two large-scale real-world building models. The results show that all the external objects in the three models are accurately and efficiently identified, and the two-tier spatial indexing and other acceleration techniques improve the algorithm's efficiency significantly.
Keyword:
SPATIAL QUERY LANGUAGE
BIM
DESIGN
OPERATORS
STAGE
AI总结
对已上传原文的论文进行重点信息的提取，主要内容包括：简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。
期刊
C
IF:
9.1
论文数:
2.0K
被引数:
10.0K
机构
引用论文
.png){kind=icon}
Building information modeling for facilities management: A literature review and future research directions面向设施管理的建筑信息模型: 文献综述与未来研究方向
OAAI
OAAI分享收藏分享收藏
查看更多内容