Virtual GIS: A Real-Time 3D Geographic Information System
نویسندگان
چکیده
Advances in computer graphics hardware and algorithms, visualization, and interactive techniques for analysis offer the components for a highly integrated, efficient real-time 3D Geographic Information System. We have developed "Virtual GIS," a system with truly immersive capability for navigating and understanding complex and dynamic terrain-based databases. The system provides the means for visualizing terrain models consisting of elevation and imagery data, along with GIS raster layers, protruding features, buildings, vehicles, and other objects. We have implemented window-based and virtual reality versions and in both cases provide a direct manipulation, visual interface for accessing the GIS data. Unique terrain data structures and algorithms allow rendering of large, high resolution datasets at interactive rates.
منابع مشابه
Rendering Vector Data over Global, Multiresolution 3D Terrain
Modern desktop PCs are capable of taking 2D Geographic Information System (GIS) applications into the realm of interactive 3D virtual worlds. In prior work we developed and presented graphics algorithms and data management methods for interactive viewing of a 3D global terrain system for desktop and virtual reality systems. In this paper we present a key data structure and associated render-tim...
متن کاملInput Devices Interaction - Manager Scene
In this paper we report on a linked environment of the three programs XGobi, XploRe, and ViR-GIS. While XGobi and XploRe are statistical packages that focus on dynamic statistical graphics and provide analytical statistical features, respectively, ViRGIS is a 3D Virtual Reality Geographic Information System (GIS) that allows real{time access to, and visualization of, geographic data. The XGobi/...
متن کاملInput Devices Interaction - Manager Scene Manager Concurrency Manager Loader Graphics Library Output Devices Topological Data Texture Data Thematic Data Loader
In this paper we report on a linked environment of the three programs XGobi, XploRe, and ViR-GIS. While XGobi and XploRe are statistical packages that focus on dynamic statistical graphics and provide analytical statistical features, respectively, ViRGIS is a 3D Virtual Reality Geographic Information System (GIS) that allows real{time access to, and visualization of, geographic data. The XGobi/...
متن کاملScientific Applications of Visualization, Virtual Reality and High Performance Visualisation Computers
• Computational steering: enabling interaction with simulations and to direct the solution of biomedical, chemical, and engineering time-critical problems. • Medical: investigate such complex systems as the human body with real-time, 3D computer images; visualising correlation between therapeutic targets and disease; surgical planning and simulation: virtual endoscopy; computer augmented surger...
متن کامل3D Visualization and Evaluation of Remote Sensing Data
The parallel evaluation of remote sensing data from multiple sensors is complicated by different image scales and orientations. Thus a simultaneous visualization of the multi-sensor data is envisaged. For a spatial impression of the observed area the images are co-registered, projected onto a 3D terrain model and displayed stereoscopically. The presented 3D evaluation system allows the real-tim...
متن کامل