闽江沿岸景观三维重现研究

Study on Three-Dimensional Landscape Model Along Minjiang River

以4D数据为基础,利用三维地理信息系统软件IMAGIS,通过数据预处理、三维建模、纹理映射、三维场景生成等过程,建立了福州滨江景观三维可视地理信息系统。该系统具有数据集成管理、信息查询分析、规划方案比较、规划方案三维预评价以及成果输出等功能。并提出系统建立过程中应注意的问题,如DEM格网大小设置、模型数据量控制、避免多面重合以及设置纹理存放路径等。

Based on 4D data, the authors construct a 3DGIS for the landscape along Minjiang river in Fuzhou using the 3D GIS software IMAGIS by the way of data pre-processing, 3D-modeling, texture projecting and 3D-scene creating. This system is provided with functions such as integatedly managing tata, querying and analyzing information, comparing layout projects, pre-evaluating projects and exporting production. They also put forward some involved points such as setting the gridding size of DEM, controlling the capacity of model data, avoiding the superposition of several faces and setting the path of texture files.