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Browsing by Subject "Terrestrial laser scanner"

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Comparison of target-and mutual informaton based calibration of terrestrial laser scanner and digital camera for deformation monitoring

Omidalizarandi, Mohammad; Neumann, Ingo (Göttingen : Copernicus GmbH, 2015)

In the current state-of-the-art, geodetic deformation analysis of natural and artificial objects (e.g. dams, bridges,.) is an ongoing research in both static and kinematic mode and has received considerable interest by ...
How significant are differences obtained by neglecting correlations when testing for deformation: A real case study using bootstrapping with terrestrial laser scanner observations approximated by b-spline surfaces

Kermarrec, Gaël; Paffenholz, Jens-André; Alkhatib, Hamza (Basel : MDPI AG, 2019)

B-spline surfaces possess attractive properties such as a high degree of continuity or the local support of their basis functions. One of the major applications of B-spline surfaces in engineering geodesy is the least-square ...
On estimating the hurst parameter from least-squares residuals. Case study: Correlated terrestrial laser scanner range noise

Kermarrec, Gaël (Basel : MDPI AG, 2020)

Many signals appear fractal and have self-similarity over a large range of their power spectral densities. They can be described by so-called Hermite processes, among which the first order one is called fractional Brownian ...
On the impact of correlations on the congruence test: a bootstrap approach: Case study: B-spline surface fitting from TLS observations

Gaël, Kermarrec; Boris, Kargoll; Hamza, Alkhatib (Cham : Springer, 2020)

The detection of deformation is one of the major tasks in surveying engineering. It is meaningful only if the statistical significance of the distortions is correctly investigated, which often underlies a parametric ...
On the sensitivity of the parameters of the intensity-based stochastic model for terrestrial laser scanner. Case study: B-spline approximation

Kermarrec, Gael; Alkhatib, Hamza; Neumann, Ingo (Basel : MDPI AG, 2018)

For a trustworthy least-squares (LS) solution, a good description of the stochastic properties of the measurements is indispensable. For a terrestrial laser scanner (TLS), the range variance can be described by a power law ...
The variance inflation factor to account for correlations in likelihood ratio tests: deformation analysis with terrestrial laser scanners

Kermarrec, Gaël; Lösler, Michael; Guerrier, Stéphane; Schön, Steffen (Berlin, Heidelberg : Springer, 2022)

The measurement noise of a terrestrial laser scanner (TLS) is correlated. Neglecting those correlations affects the dispersion of the parameters when the TLS point clouds are mathematically modelled: statistical tests for ...

Now showing items 1-6 of 6

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Browsing by Subject "Terrestrial laser scanner"

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