一种新的基于易得图像建筑建模方法研究

为突破单纯运用立体视觉求解算法的诸多限制条件,实现建筑物三维造型的快速便利的建模,该文提出一种新的基于实体特征库的三维真实感建筑造型算法,在以易获得的单幅建筑场景图像作为输入的基础上,系统综合运用建筑场景中各组成实体的造型特征及参考库匹配技术,实现场景的三维造型以及真实感编辑与优化。该文建立实体特征造型库辅助识别二维图像中各个实体部件,并以该实体为造型的构造单元,通过匹配与编辑二维投影图,快速造型复杂和不规则的建筑场景。为解决常见的纹理贴图造型失真问题,优化三维造型的真实感属性,该文设计并实现了三维造型纹理与材质属性的编辑计算方法及实用工具。实验已证明该算法与系统综合体系设计的实用有效性,所研制的系统与优化工具可作为同类型的真实感造型与编辑软件的组件。这项研究成果对于建筑工程CAD与数字城市造型工作,具有重要的实用价值和广阔的应用前景。

A New Approach to Image-Based Architecture Modeling with Featured Solid Library

To overcome restrictions of present modeling te ch niques,and to approach quick and convenient 3D architecture modeling,this pap er presents a realistic modeling system on the basis of featured solid library. The system incorporates reference library tech niques to build up realistic mode ls from a single image.In the approach,parameterized component solids are map ped to2D featured projection graphs on image plane,and matching features of al l component graphs with the resource image would result in the3D realistic sce ne,whether complex or irregular.Besides,a suite of texture toolkit is impleme nted to rectify flaws of texture mapping and to enhance modeling reality.The e ffectiveness of the approach has been proved in systematic experiments.As the approach makes a substantial complement to image-based modeling technique in c onstruction CAD and digital city systems ,it would be popular in classes of mod eling software.