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Point-based and Area-based Deformation Analyses

Since several years, the areal acquisition of objects and their geometries - up to an integrated space continualization - got into focus of engineering geodesy. Consequently, objects are no longer sampled and discretized by a small number of individually defined signalized points. Instead, they are area-wise sampled by a large number of non-signalized points whose individual positions cannot be set up.

 

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This fact makes completely new demands regarding the subsequent data processing: Up to now, deformation analyses are focused on analyzing single points or point differences to decide whether the sampled object is deformed at selected positions. Since there are no longer signalized points when using laser scanners and, thus, also no longer identical points between two epochs, judging an object to be deformed can only be based on an areal parameterization.

 

area-based-defo

 

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Publications (selection)

  • Holst, C., Klingbeil, L., Esser, F., Kuhlmann, H. (2017) Using point cloud comparisons for revealing deformations of natural and artificial objects, 7th International Conference on Engineering Surveying (INGEO), 18-20 October 2017, Lisbon, Portugal.
  • Holst, Ch., Schmitz, B., Kuhlmann, H. (2017) Investigating the applicability of standard software packages for laser scanner based deformation analyses, FIG Working Week 2017, May 29 - June 02, Helsinki, Finland
  • Holst, Ch., Schmitz, B., Schraven, A., Kuhlmann, H. (2017) Eignen sich in Standardsoftware implementierte Punktwolkenvergleiche zur flächenhaften Deformationsanalyse von Bauwerken? Eine Fallstudie anhand von Laserscans einer Holzplatte und einer Staumauer, zfv - Zeitschrift für Geodäsie, Geoinformation und Landmanagement, 2/2017, S. 98-110, doi:10.12902/zfv-0158-2017
  • Holst, Ch., Kuhlmann, H. (2016) Challenges and Present Fields of Action at Laser Scanner Based Deformation Analyses, J. Appl. Geodesy, 10 (1), S. 17-25 (identical with: Holst, Ch., Kuhlmann, H. (2016) Challenges and Present Fields of Action at Laser Scanner Based Deformation Analyses, 3rd Joint International Symposium on Deformation Monitoring (JISDM), 30th March - 1st April 2016, Vienna)
  • Neuner, H., Holst, Ch., Kuhlmann, H. (2016) Overview on Current Modelling Strategies of Point Clouds for Deformation Analysis, Allgem. Verm. Nachr, 11-12/2016, S. 328-339, Wichmann Verlag, Berlin
  • Wunderlich, T., Niemeier, W., Wujanz, D., Holst, Ch., Neitzel, F., Kuhlmann, H. (2016) Areal Deformation Analysis from 
    TLS Point Clouds - The Challenge
    , Allgem. Verm. Nachr, 11-12/2016, S. 340-351, Wichmann Verlag, Berlin
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