DE-Based Reversible Data Hiding With Improved Overflow Location Map

1
DE-Based Reversible Data Hiding With Improved
Overflow Location Map

• Author Yongjian Hu, Heung-Kyu Lee, and Jianwei
  Li
• Source IEEE Transactions on Circuits and
  Systems for Video Technology, Vol. 19, No. 2,
  pp. 250-260.
• ReporterYing-Hsuan Huang

2
Thodi et al.s method
Secret data 1
x 158
254
c 154
x 156
b 151
a 153
d 4
d 2
T 3
0
prediction value
Location map 0
Stego pixel x w 158 1 159
3
Thodi et al.s method
x 254
x 255
254
c 253
d 1
T 3
d 2
0
prediction value
Location map 1
Stego pixel x 254
4
Thodi et al.s method
x 248
x 253
254
c 243
d 5
d 10
T 3
0
prediction value
7
Location map 0
Stego pixel x (T 1) 249 4 253
5
Implementation- Baboon

The location map of high payload
The location map of low payload
6
The proposed method
Secret data 1
x253
x 253
254
254
c 253
T 3
d 0
d 0
0
prediction value
Location map 0
Stego pixel x w 253 1 254
7
The proposed method
s 254
c 253
d 1
T 7
prediction value
Location map 0
Secret data (w) 1
x s (d-w)/2 w 253
8
The proposed method
x 254
x 255
254
c 253
d 1
T 3
d 2
0
prediction value
Location map 1
Stego pixel x 254
9
The proposed method
255
x 249
x 253
c 243
d 6
d 10
T 3
0
prediction value
Location map 0
Stego pixel x (T 1) c d 249 4 253
10
The proposed method
s 253
c 243
d 10
T 7
0
prediction value
Location map 0
x 253 T 1 249
11
The proposed method
255
x 256
x 252
c 243
d 9
d 13
T 3
0
prediction value
Location map 1
Stego pixel x 252
12
Implementation- Baboon
The location map of low payload
The location map of high payload
13
Experimental Results- Girl
Image quality
The size of the compressed location map
14
Experimental Results- Man
Image quality
The size of the compressed location map
15
Conclusions

• Location map
• Distortion control mechanism

16
Comments- Extra data

• The recorded coordinates
• The location map
• The histogram-based method
• The block complex