Construction of spatial information model of 3D real estate: case study of the Nanjing gulou central business district

Abstract

Complexity of urban construction and land use is increasing which cannot be represented adequately by 2D systems. The successful construction of a Spatial Information Model of 3D Real Estate (SIM-3RE) is valuable to achieving a refined administration of 3D space and property-rights of urban real estate in China. In this paper, the Nanjing Gulou Central Business District was selected as an experimental region, and the historical data of surveys and maps of the parcels and buildings were collected. After the supplementation of some missing data (such as height) by surveying, the SIM-3RE was constructed using the 3D partitioned units for buildings and 3D parcels of land.