Reversible and Fragile Watermarking for Medical Images

Table 1

Simulation parameters.

Sr. No.	Parameter	Value
1	Host medical image size	348x314
2	Watermark image size	55x55
3	Chaos initial conditions	x(0) = 0.25; r = 3.58; x(0) = 0.56,; r = 3.57
4	Image type	MRI, Ultrasound
5	Attack type	AWGN, Salt & Pepper
6	Watermark type	Chaotically generated random sequence of grayscale pixels having intensity between 0-255