Cryptography Reference
In-Depth Information
FIGURE 14.7
Improved algorithm of image sharing.
14.4 Experiment and Evaluation
Both of the algorithms proposed in this chapter can theoretically be employed
for image sharing, but actually they are different in terms of practical imple-
mentation. Color image sharing based on Lagrange interpolation allows for
only a limited number of shares due to the oscillations phenomenon. Color
image sharing based on moving lines can theoretically generate an unlimited
number of shares. In practice, generating more shares will require more com-
putation. Thus, as a trade-off, we usually share a color image into at most five
shares.
FIGURE 14.8
(See color insert.) The experimental results of image sharing by moving lines.
We now present some experimental results on images of size 128128. The
shares and original secret image based on quadric curves of moving lines are
 
 
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