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The calculation of building corrections in microgravity surveys using close range photogrammetryNormal access

Authors: J. Panisova, R. Pašteka, J. Papco and M. Fraštia
Issue: Vol 10, No 5, October 2012 pp. 391 - 399
DOI: 10.3997/1873-0604.2012034
Language: English
Info: Article, PDF ( 9.4Mb )

Abstract:
Use of the microgravity technique for cavity detection in the exploration of historical buildings requires careful data acquisition and modern processing procedures. We have developed a new method for the calculation of building effects, where geodetic measurements and special photogrammetric software are used. In our new approach, a three-dimensional polyhedral model of an historical building is created from images using Eos System’s PhotoModeler Scanner software. A comparison of equations for the calculation of the gravitational effect of polyhedral bodies is presented on a simple test model. The methodology of microgravity data processing is demonstrated on a small Slovak church, where two crypts were successfully detected using microgravity and GPR techniques in summer 2009. We have shown that close range photogrammetry methods offer a possibility to improve the microgravity data processing procedure.


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