Research on updating method of 1:10,000 basic geoinformation based on domestic images
Domestic high-resolution satellite images and stereo satellite updating method are used in this paper to update 1∶10,000 topographic map in Sichuan Province,the terrain updating resources include ZY3 and GF7,while the geoinformation updating resources were GF2 and GF7.The three types of images were combined in pairs to realize full feature updating.The experimental results indicate that,the images for full feature updating all meet the requirements of 1:10,000 DOM,DLG,and DEM products.However,based on the time used for image production,image quality and labor costs,ZY3 combined with GF2 is suggested to be used in the sparsely populated western Sichuan,ZY3 combined with GF7 in the economically developed southern Sichuan,and GF7 in the Chengdu Plain.
satellite imagesdomestic images1∶10,000 basic geoinformation data updating
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