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EURASIP Journal on Information Security
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Table 7 Entropy for the distribution on resolutions of the isotropic compression-oriented distribution (
g
= 5,
b
= 1
/
4,
c
= 0) and the uniform distribution
From:
Assessing JPEG2000 encryption with key-dependent wavelet packets
Res. at level
Quality
Entropy (iso)
Entropy (isouni)
0
1
114.0
261.6
1
1/4
28.7
65.4
2
1/16
7.5
16.3
3
1/64
2.2
4.1
4
1/256
0.8
1.0
5
1/1024
0.0
0.0
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