IEEE Computational Intelligence Magazine - November 2021 - 77

The results of extraction error e on the
MNIST dataset with batch size 50 and
b 15 .= are shown in Fig. 8(a), while
the corresponding values of detection
accuracies are shown in Fig. 8(b).
It can be seen in Fig. 8(a) that the
additional data can be correctly extracted
when capacity t 60001
regardless of the
routing iterations. This means that the
embedding capacity of the proposed
scheme is 6000 bits, which is satisfactory
for data hiding. For practical applications,
0.1
0.2
0.3
0.4
0.5
some possible situations are described in
Section I, for example, in command delivery,
the amount of 6000 bits is enough for
the requirement of a commander who
plans to transmit instructions to officers.
Transmission of data with a large size can
be achieved by multiple networks. It can
also be found from Fig. 8(b) that the
TABLE II KL divergence values of original and stego distributions in Fig. 6.
FIG. 6
KL DIVERGENCE VALUES
FIG. 6
KL DIVERGENCE VALUES
(A) AND (F)
0.9889
(D) AND (I)
1.5215
(B) AND (G)
0.0138
(E) AND (J)
1.6679
(C) AND (H)
0.5828
99
98.8
98.6
98.4
98.2
98
97.8
97.6
01 234567 8 910110 1 23 4567 8 91011
(a)
ββ
(b)
FIGURE 7 Extraction errors and detection accuracies with different b , (a) extraction error; (b) detection accuracies.
0.1
0.08
0.06
0.04
0.02
100
99
98
97
96
95
0 1,500 3,000 4,500 6,000 7,500 9,000 10,500
Capacity t (bits)
(a)
Two Routing Iterations
0 1,500 3,000 4,500 6,000 7,500 9,000 10,500
Capacity t (bits)
(b)
Three Routing Iterations
Four Routing Iterations
FIGURE 8 Extraction errors and detection accuracies with different capacities (bits), (a) extraction error; (b) detection accuracies.
NOVEMBER 2021 | IEEE COMPUTATIONAL INTELLIGENCE MAGAZINE 77
Extraction Error e
Extraction Error e
Detection Accuracy
Detection Accuracy

IEEE Computational Intelligence Magazine - November 2021

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