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A novel method for automating the checking and correction of digital elevation models using orthophotographs
Author(s) -
Georgopoulos Andreas,
Skarlatos Dimitris
Publication year - 2003
Publication title -
the photogrammetric record
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.638
H-Index - 51
eISSN - 1477-9730
pISSN - 0031-868X
DOI - 10.1111/0031-868x.t01-1-00015
Subject(s) - digital elevation model , computer science , elevation (ballistics) , computer graphics (images) , computer vision , artificial intelligence , remote sensing , mathematics , geology , geometry
Abstract This article presents a complete mathematical model, which translates discrepancies between two orthophotographs created from different photographs, into precise corrections of the Digital Elevation Model (DEM). These corrections are the differences from the real surface and, if applied over the existing DEM, can produce a more accurate one. The mathematical model is straightforward, and is not approximate, and therefore there is no need for iterations. Possible applications include checking of automatically created DEMs, refinement of existing DEMs using aerial photographs and update of orthophotographs based on the previous DEM and new imagery.