Cryptography Reference
In-Depth Information
TABLE 15.2
PSNR measurements when embedding the two target secret
images in Figure 15.5 (a) and (b) comparisons for past
schemes and our scheme.
Ball
House
Bridge
Buttery
Toys
Airplane
PSNR
43.39
43.43
43.2
43.39
42.95
43.05
TABLE 15.3
PSNR comparisons with the Lin-Tsai scheme.
Milk
Tiffany
Baboon
Airplane
Lin-Tsai-scheme
39.07
39.08
39.08
39.07
Wang et al. scheme
43.39
43.12
43.41
43.40
FIGURE 15.8
(a) the target images; (b){(e) the four cover images; (b 0 ){(e 0 ) the four stego-
images.
FIGURE 15.9
Minor bit adjustments in the stego-image of "airplane." (a) Lin-Tsai scheme,
(b) Yang et al. scheme, and (c) our scheme.
 
 
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