EURASIP Journal on Information Security

Table 1 Comparison of proposed SS and ZW methods

From: Logistic Map-Based Fragile Watermarking for Pixel Level Tamper Detection and Resistance

(a)
Image Names	PSNR SS method	PSNR ZW method	Time SS method	Time ZW method
Biltmore	38.30	37.97	12.86	154.78
Lena	38.17	37.94	12.66	154.77
UNCG	37.74	37.87	12.64	154.38
Flower Grdn	37.72	37.90	12.66	155.13
House+Tree	37.65	37.83	12.64	153.14

(b)
Actually Tampered	Detection		False		False
	Rates		Negative		Positive
	SS	ZW	SS	ZW	SS	ZW
4211	99.81%	69%	0.19%	0.31%	0.35%	2.18%
4184	99.90%	65%	0.10%	0.35%	2.31%	2.23%
4140	99.73%	65%	0.27%	0.35%	0.99%	2.20%
4098	99.39%	0.65	0.61%	0.35%	1.60%	2.29%
4186	99.95%	66%	0.05%	0.34%	1.06%	2.15%

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