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Construction of large-scale virtual environment is gaining more attention for its applications in virtual malls, virtual sightseeing, tele-presence, etc. We introduce a framework to construct a realistic large-scale virtual environment by fusing range data, texture images, and airborne altimetry data. First, realistic and high-precision 3-D models of buildings are created from range data and texture images, which are taken by long-range laser scanner and digital camera, respectively. Next, rough 3-D models of buildings in wide area are created using altimetry data acquired by airborne laser profiler. Finally, these models are integrated to build a large-scale realistic walk-through system. This paper describes the proposed system, issues related to the system, part of its implementations, as well as future work that still has to be done.
Image Processing. 2002. Proceedings. 2002 International Conference on (Volume:2 )
Date of Conference: 2002