A geographic information data acquisition method based on DSM and DOM
Aiming at the problems of large personnel input and low data acquisition efficiency in aerial photography three-dimensional acquisition and artificial field surveying and mapping. By reusing digital orthophoto map(DOM) data,digital surface model(DSM) data,and auxiliary data generated during DOM data production,this paper explored the lodging characteristics of tall ground objects in push-sweep data. The problem of projection difference during data production was solved,and a new data acquisition technology was formed and verified by production. The experimental results show that this method breaks the shackles of traditional acquisition methods and is not restricted by hardware,software,and personnel skills. It can realize the function of basic scale topographic map surveying and mapping,the function of new fundamental surveying and mapping geographic entity collecting and editing,and the function of modeling data collecting and editing.
geographic information data acquisitiondigital orthophoto map(DOM)projection differenceprojection correction algorithmsatellite imagery of push broom
万方数据
维普
