Riis, N. A.B. Frøsig, J. Dong, Y. Hansen, P. C.

Tomographic reconstruction from limited data is an important problem that arises in many applications and can be handled in many ways. Here we consider inspection of underwater oil pipelines via fan-beam x-ray CT where, due to restrictions in the measurement device, the beam cannot illuminate the full area to be reconstructed. Moreover, it is desir...

Riis, N. A.B. Frøsig, J. Dong, Y. Hansen, P. C.

Tomographic reconstruction from limited data is an important problem that arises in many applications and can be handled in many ways. Here we consider inspection of underwater oil pipelines via fan-beam x-ray CT where, due to restrictions in the measurement device, the beam cannot illuminate the full area to be reconstructed. Moreover, it is desir...

Riis, N. A.B. Frøsig, J. Dong, Y. Hansen, P. C.

Tomographic reconstruction from limited data is an important problem that arises in many applications and can be handled in many ways. Here we consider inspection of underwater oil pipelines via fan-beam x-ray CT where, due to restrictions in the measurement device, the beam cannot illuminate the full area to be reconstructed. Moreover, it is desir...

Riis, N. A.B. Frøsig, J. Dong, Y. Hansen, P. C.

Tomographic reconstruction from limited data is an important problem that arises in many applications and can be handled in many ways. Here we consider inspection of underwater oil pipelines via fan-beam x-ray CT where, due to restrictions in the measurement device, the beam cannot illuminate the full area to be reconstructed. Moreover, it is desir...

Hubmer, Simon Sherina, Ekaterina Neubauer, Andreas Scherzer, Otmar

We consider a problem of quantitative static elastography, the estimation of the Lam´e parameters from internal displacement field data. This problem is formulated as a nonlinear operator equation. To solve this equation, we investigate the Landweber iteration both analytically and numerically. The main result of this paper is the verification of a...

Karamehmedovic, Mirza

Photo-acoustic tomography (PAT) exploits an interaction between electromagnetic and acoustic phenomena. Accordingly, a standard forward model underlying PAT involves an elliptic PDE with internal data coupled with a hyperbolic initial-boundary problem. For both component problems one can formulate a forward operator that maps a feature of the sampl...

Karamehmedovic, Mirza

Photo-acoustic tomography (PAT) exploits an interaction between electromagnetic and acoustic phenomena. Accordingly, a standard forward model underlying PAT involves an elliptic PDE with internal data coupled with a hyperbolic initial-boundary problem. For both component problems one can formulate a forward operator that maps a feature of the sampl...

Fatehiboroujeni, Soheil

Slender structures–bodies with large length to thickness ratio–occur not only in structural engineering applications, but also in several biological and nano-scale applications. Some of the recently emerging examples of interest include nanoscale biological filaments (e.g. DNA molecules, microtubules, cilia and flagella), carbon nano-tubes and silv...

Hubmer, Simon Sherina, Ekaterina Neubauer, Andreas Scherzer, Otmar

We consider a problem of quantitative static elastography, the estimation of the Lam´e parameters from internal displacement field data. This problem is formulated as a nonlinear operator equation. To solve this equation, we investigate the Landweber iteration both analytically and numerically. The main result of this paper is the verification of a...

Hubmer, Simon Sherina, Ekaterina Neubauer, Andreas Scherzer, Otmar

We consider a problem of quantitative static elastography, the estimation of the Lam´e parameters from internal displacement field data. This problem is formulated as a nonlinear operator equation. To solve this equation, we investigate the Landweber iteration both analytically and numerically. The main result of this paper is the verification of a...