ACCURACY ASSESSMENT OF DIGITAL ELEVATION MODEL (DEM) GENERATION FROM WV02 SATELLITE IMAGES: A CASE STUDY OF THE BAGHDAD-AL-WIHDA TOWNSHIP/IRAQ

Abstract

The digital elevation models (DEM) generated from a pair of WorldView-2(W V02) satellite images, is one of the methods of passive remote sensing. Where this technique depends on the principle of traditional photogrammetry. In this paper include the DEM data produced by a pair of WorldView-2(W V02) satellite images with help Leica Photogrammetry Suite (LPS 2013) software. Generated DEMs were compared for accuracy using different Ground Control Points(GCPs) observed in the field.The result of root mean square error (RMSE) is 0.171 m and the mean error was 0.033m.According to the statistical analysis of the results with the help of SPSS software, it may be argued the mean error of quotient in the DEM derived from a pair of W V02 satellite images can get into every part of the earth's surface, to be similar to the topography of the study area.