Resolving the Alignment Problem in Visual Cryptography - Visual Cryptography and Secret Image Sharing - page 316

FIGURE 11.9
Recovered secret images for a (2; 2) misalignment VCS using two-sized subpix-
els of 2 = 16: (a) p B = 0%, (b) p B = p S = 50%, M reg , (c) p B = p S = 50%,
M ran and (d) p B = 100%, horizontal deviations: 0, 0:5, 1, and 2 are tested
(unit: small subpixel).