融合多源数据的古城构件模型库三维重建方法

3D reconstruction of ancient city component model library based on multi-source data

针对传统建模方式在古城复原过程中存在偏离历史原貌以及建模工作繁杂冗余等问题,为最大程度上复原古城历史原貌,该文基于多种来源数据的协同处理,对古城三维信息进行有效的挖掘、整理和数字化,分析古城建筑特征,从古城建筑群中抽象出建筑局部构件,采用CityEngine规则建模的方式,构建出古城构件规则模型库,通过对模型库中各构件的调用与拼接,实现大场景下的批量三维建模工作。该文以赣州古宋城为例,运用此方法完成了古宋城的三维数字化重建,实验表明,该方法在真实还原大场景三维模型工作中具有显著优势。

In view of the problems of traditional modeling methods in the process of ancient city restoration, such as deviation from the original historical appearance and complicated and redundant modeling work, in order to restore the original historical appearance of the ancient city to the greatest extent, this paper effectively excavated, arranged and digitized the 3 D information of the ancient city based on the collaborative processing of multi-source data. Combined with the architectural characteristics of the ancient city, it abstracted the local building components from the ancient city buildings, and constructed the rule model library of the ancient city components by using the CityEngine rule modeling method. Through the call and splicing of the components in the model library, the batch three-dimensional modeling work in large scenes was realized. Taking the ancient city of Ganzhou as an example, this method was used to complete the three-dimensional digital reconstruction of the ancient city of Ganzhou. The experiment showed that this method had significant advantages in the real restoration of large scene three-dimensional model, and provided reference for other ancient city 3 D reconstruction.