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  4. GPU-accelerated Matrix-Free 3D Ultrasound Reconstruction for Nondestructive Testing
 
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2018
  • Konferenzbeitrag

Titel

GPU-accelerated Matrix-Free 3D Ultrasound Reconstruction for Nondestructive Testing

Abstract
In this paper, we propose a matrix-free 3D ultrasonic reconstruction scheme based on the Fast Iterative Shrinkage-Thresholding algorithm (FISTA) implemented on a GPU. The matrix-free implementation allows to reconstruct images even for problem sizes that would be intractable when explicitly calculating the matrix. However, due to the matrix-free implementation, additional steps are necessary to estimate the stepsize parameter required by FISTA, since the optimal stepsize depends on the largest singular value of the operator matrix, which in the matrix-free version is unavailable and cannot be built due to its size. The estimation is performed based on a priori knowledge of the model. We compare our method to 3D SAFT and OMP images of volumetric ultrasound measurement data of a steel specimen to show how FISTA leads to sharper images facilitating sizing and locating of defects within a specimen.
Author(s)
Kirchhof, Jan
Fraunhofer-Institut fĂ¼r Zerstörungsfreie PrĂ¼fverfahren IZFP
Semper, Sebastian
Technische Universität Ilmenau, Institute for Information Technology, Germany
Römer, Florian
Fraunhofer-Institut fĂ¼r Zerstörungsfreie PrĂ¼fverfahren IZFP
Hauptwerk
IEEE International Ultrasonics Symposium, IUS 2018
Project(s)
ATTRACT
CoSMoS
Funder
Fraunhofer-Gesellschaft FhG
Deutsche Forschungsgemeinschaft DFG
Konferenz
International Ultrasonics Symposium (IUS) 2018
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DOI
10.1109/ULTSYM.2018.8579936
Language
Englisch
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IZFP
Tags
  • Fast Iterative Shrink...

  • Sparse Signal Recover...

  • Orthogonal Matching P...

  • ultrasound

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