摘要
以三峡库区为例,将VR-GIS技术应用在区域资源与生态环境三维数字化的模拟中。制作了三峡库区航空影像图、数字镶嵌图、DEM数据和矢量图层。利用ERDAS IMAGINE的Visual GIS模块,集成多层数据,通过人机交互进行参数设定,最终实现三峡库区的飞行模拟。飞行模拟结果表明,该研究结果可以动态地俯视三峡库区的地形、地貌、植被覆盖状况,可以获得比二维数字镶嵌图更为直观、生动和形象的认识,对三峡库区的资源与生态环境的监测与管理具有重要意义。
This paper applies the Visual GIS technology to the flying simulation in the Three Gorges Area. During the period of pre-processing the data, the mosaic image of the study area is mapped by aerial photos. All the images are geometrically co-regist rated by using 1： 10000 scale topographical maps. The 1： 10000 scale contour lines are interpolated by using the ArcGIS Spatial Analysis for the TIN model, At last the TIN model is translated into GRID format DEM, The Visual GIS module of the ERDAS IMAGINE is used to make Three Gorges Area flying simulation. The data of DEM , mosaiced image and vector layers are integrated as the base data, The flying parameters are set up by the man-machine interactive way, By using flying views, the user can understand the landscape and detailed information of the terrain, physiognomy and vegetation cover much more visually and vividly than by viewing the digital mosaiced image. The result is significant to study Three Gorges Area.
出处
《重庆师范大学学报（自然科学版）》
CAS
2007年第4期16-20,共5页
Journal of Chongqing Normal University:Natural Science
基金
国务院三峡办
重庆市发改委
重庆市科委委托项目"三峡水库消落区基本情况与生态环境特征研究"资助(No.2003-12)
重庆师范大学博士科研启动基金(No.06XLB004)
