ABSTRACT
ABSTRACT: Virtual Reality systems have been used in diverse areas in recent years presenting numerous benefits. One class of such systems deals with urban virtual models manipulation and visualization that can be used for urban planning, architectural visualization and games. This paper presents conception and development of a software architecture based on geographical database that supports storage, recovery and real time visualization of urban virtual models. The proposed architecture makes intensive use of geographical databases technology to develop algorithms for these operations performance optimization. The cache strategy leads to a good performance of navigation in virtual urban models. We built an urban virtual model based on the historical center of São Luís to test the proposed architecture.
