Steganography in Halftone Images - Visual Cryptography and Secret Image Sharing - page 350

FIGURE 13.5
Secret pattern "UST" to be embedded in the halftone image (W).
FIGURE 13.6
DHSED-generated Y 2 (L = 5) of Lena with respect to X in Figure 13.2, W
in Figure 13.5, and Y 1 in Figure 13.4.