IEEE Consumer Electronics Magazine - September 2018 - 44
(a)
(b)
(c)
(d)
(e)
(f)
(g)
(h)
(i)
(j)
(k)
(l)
(m)
(n)
(o)
(p)
FIGURE 3. The results of the proposed scheme for grayscale images with n = 4: (a) the secret image, (b)-(e) the cover images
^C 1, C 2, C 3, C 4 h, (f)-(j) the shared images ^S 1, S 2, S 3, S 4, S 5 h, (k)-(n) the recovered cover images ^RC 1, RC 2, RC 3, RC 4 h, (o) the stego image
(ST ), and (p) the recovered secret image (G) . (Images courtesy of Image Processing Place and the USC-SIPI Image Database.)
while an acceptable range in wireless transmission settles at
roughly 25 dB for 8-bit data.
The correlation, MSE, and PSNR values between secret
image SI and shared images S i, i = 1, f, n, n + 1 are illustrated
in Table 1. Both came out to be not related as the correlation
coefficient for each pair was . 0, which means both compared
images were not related to each other. The MSE and PSNR
came out to be greater than 9,500 and less than 8.5 dB, respectively, which represents a high dissimilarity between secret
44 IEEE Consumer Electronics Magazine
^
september 2018
image SI and shared images S i, i = 1, f, n, n + 1. Hence, no
data of the secret image was partially revealed.
Quality measure techniques were used on secret image SI
and stego image ST in a combination of recovered cover
images R i, i = 1, 2, f, n. When all n recovered cover images
were combined with the stego image, the secret was recovered. The recovered secret image was identical to the secret
image as the correlation value for this pair came out to be
0.9998, which was approximately . 1, i.e., fully correlated to
Table of Contents for the Digital Edition of IEEE Consumer Electronics Magazine - September 2018
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