Fig. 7

Fused images for Profile V1 (X = 0.40 m): (a) Fused GPR/UST image and (b) final fused image. White dashed lines represent previously predicted outlines of the SP-NFC. Red and yellow boxes in (a) highlight the main reflectors and extensions beyond previously predicted SP-NFC dimensions, respectively. The input images are shown in Appendix, Figure A3.