Fig. 9.

Schematic of OrientationJ’s workflow for a cropped image slice obtained from a sample produced with ${\varphi }_i=0.25$. The algorithm returns a colour map, as well as an orientation distribution for each image. The colour wheel in the centre shows the colours assigned to each orientation angle in the colour maps, the $0^{\circ }$ angle being perpendicular to the direction of gravity and drainage