Research on space correction method of vector data based on edge control
Response to the problem of inaccurate matching of multivariate spatiotemporal data caused by different sources of geographic information data,this paper uses ArcGIS software to perform vector data spatial correction by comparing orthorectified images.By obtaining key edge nodes of vector data for edge control,a spatial affine transformation method with unchanged proportion relationship is used for correc-tion.After regional vector correction,there are still some patches that cannot be matched with the image,set up a limited correction area and use rubber plate stretching method for correction.The experimental results show that the combination of two correction methods based on edge control can achieve accurate matching between vectors and orthophoto images,while ensuring accurate edge connection between the corrected area and surrounding vector data.
NETL
NSTL
万方数据
维普
