构建三维建筑模型的规则和调度技术文献翻译.docVIP

毕业设计(论文) 文 献 翻 译 题 目 矿山测量三维模型制作 学 院 测绘科学与技术学院 专 业 测绘工程 班 级 学 生 学 号 指导教师 二〇一二 年 六 月 二 日 Constructing Rules and Scheduling Technology for 3D Building Models Zhengwei SUI, Lun WU, Jingnong WENG, Xing LIN, Xiaolu JI Abstract 3D models have become important form of geographic data beyond conventional 2D geospatial data. Buildings are important marks for human to identify their environments, because they are close with human life, particularly in the urban areas. Geographic information can be expressed in a more intuitive and effective manner with architectural models being modeled and visualized in a virtual 3D environment. Architectural model data features with huge data volume, high complexity, non-uniform rules and so on. Hence, the cost of constructing large-scale scenes is high. Meanwhile, computers are lack of processing capacity upon a large number of model data. Therefore, resolving the conflicts between limited processing capacity of computer and massive data of model is valuable. By investigating the characteristics of buildings and the regular changes of viewpoint in virtual 3D environment, this article introduces several constructing rules and scheduling techniques for 3D constructing of buildings, aiming at the reduction of data volume and complexity of model and thus improving computers’ efficiency at scheduling large amount of architectural models. In order to evaluate the efficiency of proposed constructing rules and scheduling technology listed in the above text, the authors carry out a case study by 3D constructing the campus of Peking University using the proposed method and the traditional method. The two results are then examined and compared from aspects of model data volume, model factuality, speed of model loading, average responding time during visualization, c