Doctoral Researcher
Frank Liebold

Model-based photogrammetric 3D monitoring of dynamic processes

C1 3D measuring methods © Institute of Photogrammetry and Remote Sensing

2D crack pattern from photogrammetric image sequence analysis

In order to further develop photogrammetric techniques for 3D monitoring of dynamic processes, the target variables (e.g. deformations, crack widths) shall be introduced as unknown directly into the parameter estimation process, thus combining the geometrical model of photogrammetry with deformation models from mechanics. From a stochastic point of view, this has the advantage of higher redundancy and the implicit use of covariance in the measurement process, leading to an increase in accuracy and reliability. This is particularly relevant when photogrammetric measuring techniques are employed close to the limit of their applicability, as often the case in the evaluation of high-speed camera image sequences of highly dynamic processes. The model-based approach aims to compensate for this impairment and to make stereo high-speed camera systems a universally applicable tool in the analysis of high-dynamic processes.

Liebold, F. and Maas, H.-G., 2018. Sub-pixel accuracy crack width determination on concrete beams in load tests by triangle mesh geometry analysis. ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci., IV-2, 193-200.


03. – 05.02.2020
Third GRK2250/1 Workshop

Call for Applications

There are 11 open vacancies for doctoral researchers for the second cohort of the project - GRK 2250/2, which will start in May 2020. Interested and motivated candidates are welcome to apply before 13.12.2019. More detailed information can be found here.


TU Dresden
Institute of Construction Materials
01062 Dresden, Deutschland