Two-Decoding-Option Image Sharing Method - Visual Cryptography and Secret Image Sharing - page 467

(a)I 0

(b)G 1

(c)G 2 (d)G 1 +G 2

FIGURE 17.4
The proposed (2, 2)-TiOISSS using base matrices with h = 1;l = 0, and
m = 2: (a) 512256 halftone image (b) and (c) two 512512 gray-and-white
shadows (d) the previewed image.