GENERALIZATION OF 3D BUILDING DATA

摘要: Today, more and (semi-) automatic tools techniques are getting available, that allow for an efficient capture of detailed 3D city models. With the availability such data, question rises, how these typically huge data sets can efficiently be handled, manipulated, analysed visualized. Concerning visualization, Level Detail (LOD) concept from Computer Graphic provides a mechanism to only present information, is currently visible in adequate resolution level. The problem, however, multi-scale representation buildings automatically gained. This generation generalization problem. In paper sketched, relies on terms Constructive Solid Geometry (CSG). Firstly, complex building shape has transformed into CSG, which involves segmentation its relevant parts. Secondly, mechanisms operate CSG-tree. Finally, transition between neighbouring levels achieved using differential scheme, where differences adjacent stored, instead whole