基于密集三维点云的历史建筑BIM自动建模算法研究

RESEARCH ON BIM AUTOMATIC MODELING ALGORITHM FOR HISTORICAL BUILDING BASED ON DENSE 3D POINT CLOUD

历史建筑信息模型(HBIM),对历史建筑的监控、维护、修复和虚拟展示提供了一种新方法,作为我国当下数字记忆建构课题重要的技术支撑,为文化遗产数字化有效助力,然而繁重的建模工作成为HBIM发展道路上不可回避的难题。目前有一种BIM自动建模方式,但仍然依赖手动给组件定义信息,通过探讨的BIM/HBIM自动建模方式是一种基于建筑语法的自动建模编程,是一种新算法。以某大雄宝殿局部HBIM建模为例展示自动建模的过程,试图探索新的由点云数据自动转换成BIM模型的实践,并提出BIM自动化发展的4个等级路线,从而探讨未来BIM自动建模对于推动HBIM发展的可能性。

A historical building information model provides a new method for monitoring,maintenance,restoration,and virtual display of historical buildings.It makes effective contribution for the digitization of cultural heritage,as a critical technical support for digital memory construction projects at present in China.However,troublesome modeling is an unavoidable challenge to HBIM development.There is currently a BIM automatic modeling method,relying on manual definition of component information.The BIM/HBIM automatic modeling method in this paper is an automatic modeling program based on the architectural expression,as a new algorithm.Taking local HBIM modeling of one main shrine hall as an example,this paper shows the automatic modeling process,attempts to explore a new practice of automatically converting point cloud data into BIM models,and proposes four routes at various levels for BIM automation,to investigate the possibility of BIM automatic modeling in HBIM development in the future.