A Bit-Level Visual Secret Sharing Scheme for Multi-Secret Images Using Rotation and Reversion Operations - Intelligent Multimedia Data Hiding - page 94

In the first experiment, the proposed (2, 2)-VSS scheme is implemented
and tested on an input image of size 512512, which is shown in Fig. 4.13(a).
The image consists of eight secret images. The codebooks C 0 and C 1 used in
the experiment are

⎨

0, 0, 1, 1
1, 1, 0, 0

0, 1, 0, 1
1, 0, 1, 0

0, 1, 1, 0
1, 0, 0, 1

, ,

C 0 = and

⎩ 1, 0, 0, 1

0, 1, 1, 0

1, 0, 1, 0
0, 1, 0, 1

1, 1, 0, 0
0, 0, 1, 1

, ,

⎧
⎨

0, 0, 1, 1
0, 0, 1, 1

0, 1, 0, 1
0, 1, 0, 1

0, 1, 1, 0
0, 1, 1, 0

, ,

C 1 = .

1, 0, 0, 1
1, 0, 0, 1

1, 0, 1, 0
1, 0, 1, 0

1, 1, 0, 0
1, 1, 0, 0

⎩

, ,

After the encryption process, the scheme generates the two shadows shown
in Fig. 4.13(b) and Fig. 4.13(c). Following the decryption process, the recon-
structed image is obtained and is shown in Fig. 4.13(d).

Fig. 4.13. The (2, 2)-VSS scheme on the input image of size 512512.