Using the famous channels drawn by Strebelle (Figure 3a) as training image and a map of auxiliary information about dilatation and rotation of the template (Figure 3b), it is possible to produce images as surprising as the one presented in Figure 3c.

Figure 3a: The channels of Strebelle

Figure 3b: Orientation and dilatation map. Further from the centre, larger the longitudinal compression of the channels. Orientations go from 0 to 360° in each concentric circle.