ABSTRACT Digital building modelling faces issues related to inconsistent integration/interoperability, in particular for a BIM GIS convergence. A consistent data conversion approach should consider semantic and spatial geometric modelling, therefore potentially leading to a loss of spatial geometric information. This paper simplifies semantic solving, and concentrates on the accuracy of the spatial geometric representation to avoid conflicting 3D spatial mismatches. To solve the geometry, original spatial specifications in 3D described in the IFC data schema are considered for all objects present in the model. The method is explored with a main BIM-IFC model, and additionally tested with two other models.

中文翻译：

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一种将建筑 BIM-IFC 数据集模型转换为 CityGML 的基于模型的方法

摘要 数字建筑建模面临与不一致集成/互操作性相关的问题，特别是对于 BIM GIS 融合。一致的数据转换方法应考虑语义和空间几何建模，因此可能会导致空间几何信息的丢失。本文简化了语义求解，并专注于空间几何表示的准确性，以避免冲突的 3D 空间不匹配。为了求解几何图形，模型中存在的所有对象都考虑了 IFC 数据模式中描述的 3D 原始空间规范。该方法使用一个主要的 BIM-IFC 模型进行了探索，并使用另外两个模型进行了额外的测试。