Development of a hybrid model for three-dimensional GIS |
| |
Authors: | Shi Wenzhong |
| |
Institution: | Department of Land Surveying and Geoinformatics , The Hong Kong Polytechnic University , Kowloon , Hong Kong |
| |
Abstract: | This paper presents a hybrid model for three-dimensional Geographical Information Systems which is an integration of surface- and volume-based models. The Triangulated Irregular Network (TIN) and octree models are integrated in this hybrid models. The TIN model works as a surface-based model which mainly serves for surface presentation and visualization. On the other hand, the octree encoding supports volumetric analysis. The designed data structure brings a major advantage in the three-dimensional selective retrieval. This technique increases the efficiency of three-dimensional data operation. |
| |
Keywords: | hybrid three-dimensional model TIN model octree model GIS |
|
|