Large-scale three-dimensional GIS, real-time rendering complex scenes Research
|School||People's Liberation Army National Defense University of Science and Technology|
|Course||Information and Communication Engineering|
|Keywords||Virtual Reality GIS Viewport clipping Level of detail Real-time display|
Real-time rendering three-dimensional GIS and VR system is one of the important issues is to achieve VRGIS foundation. Picture it as an important field of computer graphics research in environmental simulation, digital campus , technical training , and many have a wide range of applications . In this paper the characteristics of artificial environments , large-scale real-time rendering of complex scenes key techniques are studied . Through technology and the level of detail geometry visibility culling technical analysis presents a real-time rendering of efficient algorithms . Comprehensive data structure of the model specific technical discussions , presents a practical and efficient to solve a wide range of real-time rendering of complex scenes program ; and on this basis to achieve the airport surface display system. Among them, in both the realism of a scene at the same time focused on solving the problem of real-time rendering scenes article also discusses the airport ground information displayed items in the geometric model building , the system structure of the program , and describes the system's interactive interface .