Cryptography Reference
In-Depth Information
Fig. 5.2.
Flowchart of Tzeng et al.s data-hiding scheme.
Fig. 5.3.
The positions of four precedent neighbors of the current pixel indexed
X(i, j).
3. There exists a substitute color with the inverse mapping value of X(i, j)s
original color according to the color mapping function. And the maxi-
mum color difference between the substitute color of X(i, j) and its four
precedent neighbors is still smaller than the threshold value T
β
.
