From: Assessing JPEG2000 encryption with key-dependent wavelet packets
Res. at level
Quality
Entropy (iso)
Entropy (isouni)
0
1
114.0
261.6
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