摘要
在Debevec算法的基础上 ,给出了一种基于地面摄影影像的建筑物模型提取方案 ,即CSG构件分析模型提取方案。与传统基于航空影像的建筑物模型提取方法不同 ,利用CSG构件分析可直接对房屋采用半自动量测 ,从而兼顾人的智能和计算机效率 ,提高了模型提取的可靠性和实用性。
Different from traditional building modeling from aerophoto, a building modeling method, which is called CSG block analyzed method from ground photographs,is presented in this paper. We use CSG as the primary representation, which describes each building by a combination of one or more basic primitives for visualization purposes. Based on Debevec semi_automatic modeling algorithm, this method measures building directly with CSG block analysis,so enhances the reliability and practicality through giving attention to operator intelligence and computer efficiency. Our modeling approach has two components.One is a semi_automatic modeling method which facilitates the recovery of the basic geometry of the photographed scene. The algorithm exploits the constraints that are characteristic of architectural scenes.The other is view_dependent texture mapping, a method of composition multiple views of a scene that better simulates geometric detail on basic models.The results show that the approach has the ability to create the realistic building modeling.
出处
《武汉测绘科技大学学报》
EI
CSCD
2000年第6期521-525,共5页
Geomatics and Information Science of Wuhan University
基金
CAD和CG国家重点实验室基金资助项目!(A975 0 2 )
