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Total Focusing Method with Subsampling in Space and Frequency Domain for Ultrasound NDT

Pérez E., Kirchhof J., Semper S., Krieg F., and Römer F.

2019 IEEE International Ultrasonics Symposium (IUS), 2019

https://doi.org/10.1109/ultsym.2019.8926040

Abstract

In this paper, we present a compressed sensing model for 2D Full Matrix Capture data from a uniform linear array. Data is reconstructed via a matrix-free implementation of the Total Focusing Method (TFM) combined with the Fast Iterative Shrinkage/ Thresholding Algorithm. This results in reduced measurement times and data volumes with-out sacrificing image quality. Our approach is com-pared to standard TFM by applying the techniques on real measurement data, both synthetically compressed and complete.

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