中文摘要：

总结了当前城市范围快速过程式三维建模技术．该技术利用城市建筑物、道路等模型的相似性，定义模型的生成规则并作用于预设的基本模型元素，从而自动创建超大城区场景．过程式三维建模技术建模效率较高，但与真实场景往往有不同程度的差异，所得模型可用于游戏、影视和城区规划等领域．最后介绍了逆向过程式方法及其在城市建模中的重要应用和发展前景．

英文摘要：

The city procedural modeling techniques are investigated, which makes use of the similarities of buildings, streets and so on, in which the generation rules are defined and applied to the pre-set basic model elements. Super-large scenes can be automatically created with high efficiency, but the differences between the produced models and the real ones usually exist. So such models can be used in movies, video games and urban designs. Finally, inverse procedural modeling and its significant application in city modeling are presented.