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A. Eichhorn:
"Photogrammetric Creation of High Precision DTMīs of Test-Road Surfaces";
Poster: International Conference on Optical 3-D Measurement Techniques VII, Vienna, Austria; 2005-10-03 - 2005-10-05; in: "Optical 3-D Measurement Techniques VII, Vol. II";", A. Grün, H. Kahmen (ed.); (2005), ISBN: 3-9501492-2-8; 298 - 303.

At present car manufacturers are examining the transfer of mechanical forces from the road surface to wheels and car body on especially designed test-roads (`bumpy roadsī). Consequently drivers have to spend hundreds of hours with endurance testing. Due to high time expenditure these experimental tests have to be partly reduced by simulation which requires highly precise Digital Terrain Models (DTM) as acting force functions. This contribution is presenting some results of the project `Bumpy Roadī, which was subject to a cooperation between the University of Stuttgart (Institute for Applications of Geodesy to Engineering, IAGB) and DaimlerChrysler AG. In this project high-resolution DTM's of five test-road surfaces were created by means of optical photogrammetric sensors. Special challenges were effected by the high requirements to resolution and precision (9 mm DTM-meshes with a relative accuracy of 1 mm) in combination with the road length of 2900 m. The steps from system architecture up to the system prototype and the project handling are shown. Diverse problems which occured in the periods of photogrammetric surveying and DTM-computation (radiometric influences, object geometry, etc.) are pointed out and evaluated. Some representative DTM results are presented. Developing a combination of aerial and close range photogrammetry DTMīs with about 180 million points could be derived fulfilling the car manufacturers quality demands.

http://aleph.ub.tuwien.ac.at/F?base=tuw01&func=find-c&ccl_term=AC05936054