Cryptography Reference
In-Depth Information
Table 12.5. Comparisons of watermark robustness under different channel erasure
probabilities with a codebook length of L = 1024 after considering the embedding
of two watermarks in Sec. 12.5.1.
Channel erasure BCR with our method
BCR with [10] BCR with [11]
probability
(in %)
(in %)
(in %)
W 1
W 2
W 1
W 1
p 1
p 2
0
0
100
100
100
100
0.1
0.1
94.27
93.44
90.77
94.76
0.25
0.25
86.52
84.78
79.06
85.77
0.5
0.5
73.28
71.34
62.66
72.42
0
1
76.61
70.78
75.89
80.94
1
0
68.56
70.26
66.66
68.13
Acknowledgement
This work was supported by National Science Council (Taiwan, R.O.C.) under
Grant No. NSC 93-2219-E-009-006 and NSC 95-2221-E-390-034.
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