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Orthorectification is main and specific photogrammetric task. Digital technologies allow generation of precise orthoimages, whic h are obtaining the pixel accuracy. The realization of this process requires usage of precise and adequate object model that is generated by usage of different data sources. They include irregular set of points created by survey measurements, digitized cartographic data, raster DEM obtained from stereo pairs, or from points’ cloud gathered by laser scanning. The main steps of orthorect...