Research Article
Cryptanalysis and Improvement of an Efficient and Secure Medical Image Protection Scheme
Figure 4
The resultant images using bit-level permutation: (a) plain image; (b) 1 round permutated image; (c) 3 rounds permutated image; (d) 5 rounds permutated image.
(a) |
(b) |
(c) |
(d) |