Fig. 3.

LAFTER application to synthetic densities with defined weak FSCs recovers partial signal. LAFTER output for synthetic input truncated at a resolution of 4 voxels and with FSCs of 0.333 (A), 0.144 (B) and 0.072 (C). All synthetic input was constructed with the same level of noise with respect to the noiseless structure throughout. In each case the initial noisy and filtered maps are shown in grey with a linear transparency gradient over the density. The densities are shown as transparent “solids” as the signal in the half volumes is often otherwise indiscernible. Curves for the half-set FSC, C_ref and xFSCs between the filtered, true and summed densities in each case are shown adjacent as described in the key.