Abstract
Virtual cities have been practically used in various scences including digital cities on the Internet,3D games, movies, and urban planning. We have developed a system that can generate virtual cities whose cityscape is varied according to the amount of changes of local features at each urban block for each time period. In this paper, we describe the method that makes the features change by using cellular automata. In our method, the features of each urban block, defined as one cell, are locally changed by interaction between adjacent cells. In addition, the features are also influenced by road properties. We demonstrated that our mathod can produce various and realistic simulation patterns of urban block changes and our whole system can construct 3D scenes of time-varying virtual cities.
