(a) Randomly selected carving slice of an extracted slip. At the position of the orange lines, a depth view was extracted shown in (b). The depth view shows the slip surrounded by air and soil. The segmentation map is shown in (c). Recto layer (white), verso layer (light gray), soil (dark gray) and air (black) were manually segmented. An analysis of the mean intensities of the areas reveals that the recto layer’s attenuation differs by 29% from the soil’s one.