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Title : Modeling Our Environment: from Cartographic to Photo-Realistic
Company : University Edwardsville
File Name : Hu.pdf
Size : 2653572
Type : application/pdf
Date : 30-May-2014
Downloads : 20

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Authors: Shunfu Hu and Teresa Kysor

Com bin i ng science, art, and technol ogy, cartography offers effecti ve ways to represen t (or model) and com mu nicate geographic i n formation. Cartographic models such as poi nts, 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 vi rtual building. This paper discusses an approach to developing a photorealistic , virtual village located in Glen Carbon, Illi nois. Cartographic maps of the village are first generated , including features such as buildings , roads, cars, a power substation , overhead electrical power lines, a water tower, underground water mai ns, water sewer li nes, lawns, manholes , hydrants, and trees . Those cartographic features are then transformed into J D symbols to develop the virtual vi llage in which the user can explore and visual ize not only the JD scenes above the ground (e.g., buildings, hydrants, power li nes, trees) but also the JD scenes under the ground (e.g., water mains, sewer l ines). J n conjunction with the geometric network modeli ng, the user can experience the geometric networking among water tower, water mains, hydrants, and buildings (i.e., water flow). For example, the user can tum 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-val ve 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 model i ng technique .
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