Robust and Fragile Medical Image Watermarking: A Joint Venture of Coding and Chaos Theories

Table 1

Moduli mapping.

Original pair	Substituted pair
(16, 0)	(0, 15)
(16, 1)	(1, 15)
(16, 2)	(2, 15)
(16, 3)	(3, 15)
(16, 4)	(4, 15)
(16, 5)	(5, 15)
(16, 6)	(6, 15)
(16, 7)	(7, 15)
(16, 8)	(8, 15)
(16, 9)	(9, 15)
(16, 10)	(10, 15)
(16, 11)	(11, 15)
(16, 12)	(12, 15)
(16, 13)	(13, 15)
(16, 14)	(14, 15)