3D Geodata Recovery from high Resolution Satellite Imagery

摘要

In this paper we discuss the potential of (very) high resolution satellite sensors for 3D data extraction, through a selection of projects carried out at the Institute of Geodesy and Photogrammetry (IGP) at ETH Zurich. For data processing a set of algo rithms has been developed by our group and realized in a software suite c ailed SATellit e image Pr ecision Processing (S AT-PP). The accuracy and detail of the final 3D products depend on the geometric resolution of the input data and the characteristics of the matching and extraction technique use d. All r esults of our pr ojects show, that using SAT-PP and o ther in-house software subpixe 1 ac curacy is realistically ac hievable for georeferencing an d for DSM generation we get an accuracy of one to five pixels, depending on the land-use, topography, image texture and image quality.