Fig. 4: Measured and reconstructed velocity fields.
From: Inverse imaging with elastic waves driven by unsupervised machine learning
The first rows in a–f are photos of six 3D-printed samples with different configurations of heights of the three blocks, denoted by I, II–VI, used to obtain experimental data. The second rows are the 2D out-of-plane velocity fields at frequency \(f=2{{\rm{kHz}}}\) measured by a scanning laser Doppler vibrometer. The third rows are the reconstructed velocity fields produced by the ML model.
