Delta-variance functions calculated for the Cygnus-X North cloud (left) and the Polaris Flare cloud (right). The vertical dashed black lines in both panels mark the position of the spatial resolution for each of these two regions. The vertical dashed red lines in the case of Polaris mark the spatial range over which the power-law fit is performed. We do not attemptany fit in Cygnus-X North because the underlying self-similar regime is heavily perturbed by the presence of structures (see Sect. 6.3).