Expression and Visualization of Cloverleaf Junction in a 3-Dimensional City Model
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Seldom research work has been conducted on cloverleaf junction expression in a 3-dimensional city model (3DCM). One apparent reason is that the cloverleaf junction is often in a complex and enormous construction. Its main body is bestraddle in air, and has aerial intersections between its parts. This complex feature makes cloverleaf junctions quite different from buildings and terrain, it is therefore difficult to express this kind of spatial objects in the same way as for buildings and terrain. In this paper, authors analyzed spatial characteristics of cloverleaf junction, proposed an all-constraint points triangulated irregular network (TIN) algorithm to partition cloverleaf junction road surface, and developed a method to visualize cloverleaf junction road surface using TIN. Accordingly, an appropriate data structure for cloverleaf junction is proposed.
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- 1.C. Brenner and N. Haala. “Fast production of virtual reality city models,” ISPRS, 3-D Reconstruction and Modeling of Topographic Objects, Vol. 32, Part 3-4W2, Stuttgart, September 17-19, 68–75, 1997.Google Scholar
- 2.J. Chen and W. Guo. “K-simplex based 3-D topological ER model research,” Acta Geodaetica et Cartographica Sinica, Vol. 27:122–127, 1998.Google Scholar
- 3.M. Koehl. “The modelling of urban landscapes”, International Archives of Photogrammetry and Remote Sensing, Vol. 31, Part. B4, Vienna, 460–464, 1996.Google Scholar
- 4.M. Koehl and P. Grussenmeyer. “3-D data acquisition and modelling in a topographic information system,” in Proc. ISPRS, Vol. 32, Part 4. “GIS-Between Visions and Applications,” Stuttgart, 314-320, 1998.Google Scholar
- 5.M. Ooi, T. Hosomura, and T. Yamamoto. “Representation of road and mountain 3-D mapping,” in Proc. of UM3'98 International Workshop on Urban Multi-Media/3-D Mapping, 77–82, 1998.Google Scholar
- 6.M. Pilouk and K. Tempfli. “An integrated DTM-GIS data structure: a relational approach,” Proceedings of 11th International Symposium on Computer Assisted Cartography, Minneapolis, Minnesota, 613–624, 1996.Google Scholar
- 7.M. Ranzinger and G. Gleixner. “GIS Datasets for 3-D Urban Planning,” Computer, Environment and Urban Systems, Vol. 21:159–173, 1997.Google Scholar
- 8.J. Sun and J. Liu. Road Conspectus, People Public Traffic Publishing House: Beijing, 1997.Google Scholar
- 9.Y. Takaichi, K. Yudai, and O. Yoshinori. “3-D object modelling in a 3-D urban map”, Proceedings of UM3'98 International Workshop on Urban Multi-media/3-D Mapping, Tokyo, 55–62, 1998.Google Scholar
- 10.X. Zhou and S. Liu. “Haleness Algorithm to Realize Constraint Delaunay Partition,” Computer transaction, Vol. 19:613–624, 1996.Google Scholar