Chaotic Reversible Watermarking Method Based on IWT with Tamper Detection for Transferring Electronic Health Record

Table 8

BER results after performing various attacks for payload of 432,538 and 1,297,613 bits.

Attack	Lena (grayscale)	Mandrill (grayscale)	Lena (color)	Mandrill (color)	Tampering
Salt and pepper (0.1)	0.055	0.085	0.104	0.089	Detected
Gaussian noise (0.02)	0.277	0.165	4.893	2.592	Detected
Median filter	0.328	0.256	0.202	0.245	Detected
Low pass filtering	0.035	0.008	0.214	0.610	Detected
Sharping	0.059	0.236	0.199	0.233	Detected
Histogram equalization	0.041	0.128	0.084	0.215	Detected