基于ERDAS IMAGINE的遥感图像更新地形图

Method for updating topographic maps based on remote sensing images in ERDAS IMAGINE

为了探索利用遥感图像快速更新矢量地形图的方法,在深入研究了ERDAS IMAGINE矢量模块功能的基础上,利用试验区遥感图像和现有矢量地形图,将二者进行了高精度的配准,并以栅格图像为参照,对矢量图层的空间数据进行了更新,总结了利用ERDAS IMAGINE矢量模块结合遥感影像进行矢量图形更新的经验与方法。结果表明:与传统的地形图更新方法相比,该方法在更新中小比例尺地形图方面具有更新效率高、更新成本小等突出优势,充分体现了RS与GIS的集成应用。该成果对地理信息系统数据库建设与快速更新具有一定的参考价值。

A new method is developed for fast updating vector topographic maps using remote sensing images. The proposed method updates the spatial data vector layers using new remote sensing images and existing vector topographic maps, high-precision registration of these data, and then the reference to raster image. In addition, the method for updating the vector graphics using ERDAS IMAGINE Vector module, combined with remote sensing images, is investigated. The results show that the method has many advantages in updating topographic maps, especially small and medium-scale maps over the traditional topographic map updating methods, such as higher efficiency and lower cost. It also reflects the advantage of integrating RS and GIS systems. The results prove the method is useful to the construction and the fast updating of GIS database.