面向规划的建筑物屋顶精细纹理快速生成方法  

A Method on a Rapid Generation of Exquisite Textures of Building's Roof Towards Planning

作　　者：刘全海[1,2] 邓非[1] 李楼 冉慧敏 

机构地区：[1]武汉大学测绘学院,湖北武汉430079 [2]常州市测绘院,江苏常州213002

出　　处：《武汉大学学报（信息科学版）》2015年第8期1054-1060,共7页Geomatics and Information Science of Wuhan University

基　　金：国家"十二五"科技支撑计划资助项目(2012BAJ23B03);住建部科学技术计划资助项目(2013-S5-4)~~

摘　　要：针对三维规划审批对精确的空间关系及逼真的三维可视化效果的综合需求,设计实现了两套针对大规模三维数字城市建筑物模型的屋顶纹理快速生成方案。方案一基于严格投影成像方程建立物方与像方对应关系,并根据视线方向、遮挡关系、成像分辨率等选取最优纹理进行映射。方案二通过建立相应的屋顶纹理库,并利用屋顶纹理智能匹配技术实现大范围屋顶纹理的快速合成。利用常州市三维城市模型数据进行了实验分析,实验表明,这两套纹理生成方案生成的屋顶纹理都满足建筑物纹理重建生产要求,极大地提高了三维建模效率。Considering the demands for precise spatial relationships and effective 3D visualization in 3D planning approval, two solutions of rapid and mass building roof texture generation is presented in this paper. In the first solution, the correspondence of object space and image space is built based on the collinearity equation of perspective projection, then, the best roof texture for texture mapping can be selected considering the optical axis direction, occlusion relation and image resolution. In the sec- ond solution, the roof texture database is built and used to synthesize roof texture with the smart matching technology. The experimental results with the 3D city models of Changzhou demonstrate that two sets of solutions for roof texture generation can meet the requirements of rapidly reconstruc- ting texture of building.

关 键 词：数字城市 城市规划 三维建模 纹理映射 纹理匹配 

分 类 号：P231.5[天文地球—摄影测量与遥感]