Figure 3
From: Terahertz time-domain imaging for the examination of gilded wooden artifacts
(a, b) Deconvolved and normalized B-scans. The red line in the insets indicate where the B-scans were measured. (c, d) Processed waveforms corresponding to pixels 251 and 264, from (a) and (b) B-scans, respectively, indicated as dashed lines. Interface labeled as I2 is only present in areas corresponding to faces and necks, as shown by the B-scans in the zones indicated by the red arrows. These additional interface can clearly be seen next to the first echo, corresponding to the surface of the icon.
