Extended Data Fig. 3: Restoration model of tolerance.
From: Physical restoration of a painting with a digitally constructed mask
a, Cross-sectional diagram of bilayer alignment, showing misaligned white and color ink layers relative to the area of damage. Below are two plots of the damage. Absolute damage solely includes the exposed damage and overfilling. Perceived damage more closely follows the visual effect as seen by a human observer; the sharply contrasting exposed white ink layer is more damaging visually than overfilling. b, Area expansion diagram of layer alignment, showing a circular damaged region and a masking color ink region that is radially expanded. c, Plot of the minimum restorable cross-sectional feature dimension as a function of the combined lateral alignment tolerance and the target restoration effectiveness. In this work, the combined tolerance of 161.2 µm and restoration effectiveness of 1.0 (intersection denoted by star) leads to a calculated minimum restorable dimension of 511 µm. d, Plot of the minimum restorable feature radius as a function of alignment tolerance.
