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M. Lehmann, A. Reiterer, N. Huber, A. Bauer:
"An Automated Optical Rockfall Monitoring System";
Talk: 9th Conference on Optical 3-D Measurement Techniques, Wien; 2009-07-01 - 2009-07-03; in: "Optical 3-D Measurement Techniques IX", A. Grün, H. Kahmen (ed.); Volume I (2009), ISBN: 978-3-9501492-5-8; 91 - 101.

The increasing number of objects and human activities located in areas that are involved in deformation processes has extended the demand for rapidly working and easily usable deformation measurement systems. Deformation measurement enables the early detection of damage, infrastructure failure or potential hazard due to deformations to enable appropriate reaction in time. Most state-of-the-art sensors must be placed on-site which is often not possible in hazardous terrain. It is therefore necessary to apply remote monitoring methods that can perform their measurements without placing targets on the object. At the Institute of Geodesy and Geophysics of Vienna University of Technology a new kind of image-based measurement system is under development (research project "i-MeaS - An Intelligent Image-Based Measurement System for Rock Fall Monitoring"). This system can be used for measuring, analyzing and interpreting deformations of geo-risk objects. One of the main challenges of this system is the measurement and tracing of an unsignalized object in different temporal epochs by means of a classical deformation analysis. In the paper at hand the state-of-the-art of the new measurement system will be presented.

Project Head Alexander Reiterer:
i-MeaS - Ein intelligentes bildgestütztes Messsystem für die Überwachung von Felsstürzen