利用无人机影像制作地震灾区三维景观图

为实时、准确地获取地震灾区的灾情和灾后重建状况,研究如何利用高分辨率无人机影像制作灾区三维景观图.对无人机影像进行几何纠正、影像拼接,利用摄影测量方法生成实验区的DEM,进而将影像制作成正射影像图;将无人机影像纹理映射到DEM上构建灾区的三维地形景观,并以正射影像图为底图对安置区的地物进行三维建模;最后根据规划和管理需要,编制三维景观系统,实现地震灾区三维景观的浏览、查询与分析.实践表明,采用无人机影像制作的三维景观图具有分辨率高、形象逼真等特点;影像的获取和处理以及系统的编制可为灾区重建提供丰富详实的信息.

Using UAV image produce 3D landscape of earthquake disaster region

To acquire the situation of earthquake disaster and reconstruction region,the paper discusses how to use high-resolution UAV image to make 3D landscape of earthquake disaster region.The paper first briefly reviews correcting and stitching the UAV image,and using photogrammetric method to generate DEM of an experimental area,and then using the image to make into DOM.Then,using UAV image texture to project to the DEM and making the 3D topographic map of earthquake disaster region,and making the 3D mode of resettlement areas with DOM map for base map are introduced.Followed is a systematic description of the development of 3D landscape system.The system can provide function of browse,query and analysis.The result shows that the system of 3D landscape have high resolution,vivid,easy to query and analysis using the UAV image and can provide information for reconstruction detailed.