文章基本信息

标题：Modeling Our Environment: From Cartographic to Photo-Realistic
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作者：Shunfu Hu ; Teresa Kysor
期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2010
卷号：XXXVIII Part 4
出版社：Copernicus Publications
摘要：Combining science, art, and technology, cartography offers effective ways to repres ent (or model) and communicate geographic information. Cartographic models such as points, lines, and polygons are often used to represent the spatial features on the earth surface. With the advancement of mapping techniques such as GIS and geovisualization tools, it is possible to model the earth environment into a photorealistic, virtual reality in which a point feature to represent a building can be replaced by a virtual building. This paper discusses an approach to developing a photorealistic, virtual village located in Glen Carbon, Illinois. Cartographic maps of the village are first generated, including features such as buildings, roads, c ars, a power substation, overhead electrical power lines, a water tower, underground water mains, water sewer lines, lawns, manholes, hydrants, and trees. Those cartographic features are then transformed into 3D symbols to develop the virtual village in which the user can explore and visualize not only the 3D scenes above the ground (e.g., buildings, hydrants, power lines, trees) but al so the 3D scenes under the ground (e.g., water mains, sewer lines). In conjunction with the geometric network modeling, the user can experience the geometric networking among water tower, water mains, hydrants, and buildings (i.e., water flow). For example, the user can turn on the water supply from the water tower to see how the water flows in the water mains and into each building; the user can also disable a T-valve to turn off the water supply to a particular building. It is anticipated that such an innovative approach provides a new insight how spatial information about our environment can be effectively perceived through the use of photorealistic modeling technique
关键词：Modeling; Cartographic Maps; Photo-realistic; Visualization; 3D