A copyright protection scheme for digital images based on shuffled singular value decomposition and visual cryptography

Devi, B. Pushpa; Singh, Kh. Manglem; Roy, Sudipta

doi:10.1186/s40064-016-2733-0

SpringerPlus

Table 4 Robustness test on different images (in NC)

From: A copyright protection scheme for digital images based on shuffled singular value decomposition and visual cryptography

Attack	Lena	Mandrill	Building	Aptus	Goldhill	Zelda	Airplane	Barbara	Tiffany	Girl	Brain
JPEG Co-mpression
Q = 40	97.99	98.58	98.36	97.97	99.34	98.63	97.90	98.24	98.26	98.58	98.73
Q = 50	98.04	98.60	98.77	97.90	99.46	98.70	97.97	98.80	98.43	98.63	98.90
Q = 60	98.24	99.02	98.92	98.55	99.24	98.99	98.33	98.73	98.38	98.80	99.07
Q = 70	98.73	99.36	99.09	98.95	99.48	99.09	98.87	98.95	98.65	98.90	99.12
Q = 80	98.97	99.48	99.26	99.09	99.68	99.38	98.99	99.34	99.02	98.95	99.53
Q = 90	99.31	99.87	99.63	99.63	99.73	99.41	99.34	99.60	99.38	99.43	99.63
Rotation
A = 1°	93.82	93.75	94.36	92.50	98.26	96.28	93.31	95.45	92.43	92.55	96.46
A = 2°	93.92	93.62	93.23	90.84	97.87	96.31	93.33	95.50	92.40	92.77	96.43
A = 3°	95.92	95.33	95.58	93.85	98.21	97.80	95.80	96.24	95.67	96.92	96.41
A = 4°	95.80	95.45	95.72	93.55	97.99	97.70	95.77	96.24	95.67	96.99	96.89
A = 5°	95.89	95.50	95.62	93.75	97.97	97.66	95.87	96.02	95.77	97.02	96.85
\( A = 6^{0} \)	96.04	95.45	95.50	93.65	98.26	97.65	95.87	96.31	95.55	97.07	96.45
Median filter
ws = 2 × 2	96.11	95.89	95.97	93.72	98.31	98.02	96.36	95.99	96.48	96.43	96.58
ws = 3 × 3	97.90	96.60	97.77	95.89	99.12	98.87	98.73	97.11	97.43	99.14	98.09
ws = 4 × 4	95.62	94.72	95.23	91.72	98.07	97.58	95.89	95.33	95.31	96.14	96.09
ws = 5 × 5	96.06	94.11	95.23	91.35	98.51	98.07	97.24	95.23	96.31	98.02	96.14
ws = 6 × 6	94.72	93.23	93.62	88.91	97.70	97.16	95.14	94.70	94.84	95.60	95.96
ws = 7 × 7	94.84	92.84	93.89	88.96	98.07	97.48	95.77	94.92	95.62	97.14	94.79
Cropping
%C = 10	86.10	93.03	88.84	89.72	93.79	82.95	80.85	89.86	85.98	79.17	93.77
%C = 20	82.61	89.52	83.76	84.44	89.69	79.68	73.33	83.32	79.10	72.63	87.79
%C = 30	81.56	88.20	79.80	80.15	85.72	77.97	71.48	77.09	77.07	70.77	85.62
%C = 40	78.97	80.17	74.68	78.24	80.54	76.09	71.92	72.46	77.26	70.16	81.32
%C = 50	76.09	77.97	72.36	76.24	76.39	75.46	72.11	71.24	73.48	69.67	78.19
%C = 60	73.33	73.99	69.14	75.46	72.80	74.21	72.85	69.50	74.90	69.67	75.48
Scaling
F = 2 × 2	97.85	96.89	97.80	95.99	99.09	98.99	98.41	97.46	97.92	99.16	98.07
F = 3 × 3	96.16	94.60	95.12	91.82	98.19	98.04	96.67	96.04	96.67	97.63	98.31
F = 4 × 4	94.89	93.43	93.79	89.99	97.58	97.14	95.28	95.45	95.89	96.43	95.14
F = 5 × 5	94.16	92.50	93.28	88.74	97.11	97.04	94.14	94.97	95.04	95.92	93.84
F = 6 × 6	93.55	91.99	92.18	87.35	96.58	96.63	93.28	94.60	94.75	95.28	93.26
F = 7 × 7	92.91	91.87	91.11	86.71	96.14	96.28	92.79	94.21	94.33	95.14	92.57
Impulse Noise
R = .05	97.72	96.41	97.75	95.55	99.09	98.75	98.51	96.53	97.38	99.07	97.80
R = .10	97.41	96.04	97.60	95.84	98.77	98.92	98.16	96.43	97.14	99.02	97.82
R = .15	97.07	95.89	96.85	94.45	98.87	98.33	97.65	96.38	96.77	98.19	97.16
R = .20	96.43	95.21	96.04	93.67	97.99	97.77	96.82	95.31	95.65	97.14	97.11
R = .25	95.43	94.36	95.23	92.26	98.07	96.75	95.89	94.87	94.84	95.99	96.24
R = .30	93.89	93.96	93.82	91.72	97.11	95.87	94.01	94.01	92.89	93.89	95.48
Blurring
ζ = 0.1	100	100	100	100	100	100	100	100	100	100	100
ζ = 0.2	100	100	100	100	100	100	100	100	100	100	100
ζ = 0.3	100	100	99.97	99.97	100	100	100	99.95	99.97	100	99.92
ζ = 0.4	99.56	99.53	99.65	99.43	99.82	99.82	99.78	99.65	99.87	99.92	99.65
ζ = 0.5	99.29	98.87	99.16	98.60	99.58	99.48	99.34	99.02	99.48	99.63	99.26
ζ = 0.6	98.85	98.21	98.70	97.68	99.41	99.38	99.09	98.41	99.36	99.36	98.73
Gaussian noise
V = .01	93.18	95.16	94.77	91.16	97.55	95.77	92.67	95.04	91.94	91.94	96.26
V = .02	91.18	93.89	93.21	89.37	96.82	93.56	90.94	93.75	89.33	88.96	95.31
V = .03	89.81	93.45	91.91	86.93	95.99	92.18	88.59	92.30	87.13	87.40	94.77
V = .04	88.47	92.40	91.82	86.79	95.45	91.11	87.54	91.91	86.27	87.40	93.67
V = .05	87.40	91.89	90.50	86.54	94.75	90.25	86.91	91.77	84.57	85.83	93.01
V = .06	87.08	90.79	90.01	85.67	93.87	89.96	86.32	91.13	84.49	84.93	92.67
V = .07	85.67	91.47	88.74	84.27	93.89	88.84	85.32	90.06	83.05	82.73	91.50
V = .08	85.13	90.33	87.91	84.54	93.96	87.45	84.27	90.11	82.91	82.15	91.33
V = .09	84.93	90.08	87.15	82.44	93.35	87.62	84.03	89.64	80.90	82.27	91.67
V = .10	84.30	89.47	86.86	81.86	92.72	87.81	84.15	89.16	81.20	82.22	90.99
Sharpening
α = .1	92.08	92.33	92.79	91.33	96.58	95.70	93.57	92.48	93.11	95.48	94.79
α = .2	92.28	92.40	93.04	91.62	96.53	95.72	93.70	92.74	93.11	95.41	94.72
α = .3	92.28	92.60	93.23	91.74	96.65	95.80	93.87	92.94	93.13	95.48	94.77
α = .4	92.40	92.79	93.21	91.79	96.60	95.70	93.94	93.13	93.16	95.53	94.94
α = .5	92.40	92.96	93.28	91.89	96.67	95.70	93.92	93.26	93.23	95.55	95.04
α = .6	92.40	92.99	93.31	92.08	96.72	95.80	93.92	93.40	93.31	95.65	95.09
α = .7	92.45	93.13	93.35	92.21	96.75	95.75	94.04	93.60	93.45	95.60	95.11
α = .8	92.48	93.21	93.38	92.16	96.67	95.82	94.09	93.65	93.43	95.65	95.09
α = .9	92.57	93.21	93.45	92.23	96.70	95.80	94.14	93.65	93.57	95.67	95.14
α = 1	92.67	93.33	93.55	92.26	96.75	95.77	94.16	93.65	93.53	95.70	95.10
Gamma correction
G = .6	97.60	96.80	97.24	97.46	97.29	95.99	99.16	97.02	99.12	98.75	93.33
G = .7	98.29	97.68	97.92	98.02	98.09	97.21	99.31	98.02	99.24	99.04	97.48
G = .8	98.87	98.36	98.51	98.75	98.75	98.02	99.48	98.65	99.53	99.19	98.36
G = .9	99.41	99.21	99.36	99.56	99.48	98.99	99.75	99.38	99.68	99.60	99.24
G = 1	100	100	100	100	100	100	100	100	100	100	100
G = 1.1	99.07	99.31	99.21	99.41	99.43	98.99	99.68	99.36	99.78	99.63	99.29
G = 1.2	98.46	98.73	98.63	98.87	98.87	98.02	99.60	98.85	99.73	99.56	98.75
G = 1.3	98.02	97.97	97.99	98.29	98.43	97.38	99.31	97.94	99.43	99.34	98.09
G = 1.4	97.33	97.41	97.53	97.92	98.09	96.65	99.21	97.50	99.16	99.12	97.43
G = 1.5	96.94	96.99	96.89	97.11	97.87	96.02	98.82	96.94	98.92	99.07	96.87

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