The Design and Implementation of Auto-Checking Algorithm of DEM Registration
Xinli Zhang · Geomatics & Spatial Information Technology · 2012
Checking if the matching of DEM(Digital Elevation Model) and the corresponding DLG(Digital Line Graph) contour is reasonable is important to check the contents of the DEM production quality inspection.From production reality,a new algorithm for auto-checking of DEM matching with DLG-contour is proposed according to DEM data characteristics and shortcomings of the existing DEM matching check,,and given implementation based on C#..Net..Through the practical application of the national basic surveying and mapping in 1:50 000 mapping project,the results show that the algorithm is correct,reliable,and stable.Compared to the artificial checking,it can greatly promote the automation and accuracy of the DEM matching check to improve the efficiency of production operations.