MapGIS影像镶嵌融合控制点获取的一种有效方法

An Effective Method to Obtain Control Points for MapGIS Image Mosaic Fusion

Mapgis的msi影像要方便应用,镶嵌融合校正必不可少。采集足够多的镶嵌融合控制点使得影像校正更加精细。传统采集控制点需要先产生控制点参照文件,然后在Mapgis图像处理、图像分析系统中的影像文件窗口与控制点参照文件窗口中交互采集,窗口切换、平移、缩放,对于采集大量的控制点时,很是费时费力。具有公里网格的栅格地图,常通过公里网格的理论坐标进行影像校正。本研究主要探讨这类影像的镶嵌融合控制点的一种有效获取方法,以改善镶嵌融合控制点的采集体验,提高采集效率。

Mosaic fusion correction is indispensable to facilitate the application of Mapgis image(msi file).Enough Mosaic control points are collected to make image correction more precise.Conventional acquisition control points need to generate control point reference files first,and then interactively collect the image file window and control point reference file window in the image processing and image analysis subsystem of Mapgis,window switching,translation and scaling.It is time-consuming and laborious to collect a large number of control points,and the theoretical control points and actual control points are also prone to corresponding errors.The image correction of a grid map with a kilometer grid is often carried out by the theoretical coordinates of the kilometer grid.This paper mainly discusses another acquisition method of Mosaic fusion control points of such images,so as to improve the acquisition experience and efficiency of Mosaic fusion control points.