Cryptography Reference
In-Depth Information
(a)
(b)
p
1
=0.05, p
2
=0.05,
p
1
=0.1, p
2
=0.1,
BCR = 97.56%
BCR = 95.14%
(c)
(d)
p
1
=0.25, p
2
=0.25,
p
1
=0.5, p
2
=0.5,
BCR = 88.18%
BCR = 76.25%
Fig. 12.9.
The extracted watermark under different channel erasure probabilities
in Sec. 12.4.2, with acodebook size of L = 512. The watermark is still recognizable
even under these severely erased channels in (d).
recognizable with a BCR value of 73.34%. The resulting watermarked recon-
struction is 26.18 dB with MDC.
(a)
(b)
p
1
=0.0, p
2
=1.0,
p
1
=1.0, p
2
=0.0,
BCR = 73.34%
BCR = 80.55%
Fig. 12.10.
The extracted watermark under the case when one channel is total
breakdown in Sec. 12.4.2, with a codebook size of L = 512. Both the extracted
watermarks are recognizable.
