Attacks

Watermarked scanner image

Watermarked Radiographic image

Watermarked Image Echo graphic Image

Watermarked image mammographic

BER

NC

SSIM

BER

NC

SSIM

BER

NC

SSIM

BER

NC

SSIM

No attack

1.00

1.00

0.98

0.92

0.94

0.97

0.86

0.95

0.99

1.00

0.99

0.99

Gaussian filter [2 × 2]

0.34

0.93

0.97

3.06

0.34

0.93

0.97

0.96

0.98

0.61

0.91

0.97

Gaussian filter [5 × 5]

0.84

0.82

0.92

0.44

0.84

0.82

0.92

0.92

0.97

0.23

0.97

0.97

Gaussian noise [0.001]

0.54

0.92

0.98

0.77

0.54

0.92

0.98

0.94

0.9

0.74

0.93

0.98

Gaussian noise [0.1]

0.45

0.67

0.89

0.33

0.45

0.67

0.89

0.65

0.71

0.81

0.65

0.77

Salt & pepper

(density = 0.01)

0.69

0.54

0.78

0.77

0.69

0.54

0.77

0.69

0.54

0.77

0.79

0.64

Salt & pepper

(density = 0.1)

0.78

0.45

0.89

0.66

0.73

0.65

0.88

0.78

0.45

0.89

0.66

0.55

Resizing

(scale = 0.3)

0.67

0.81

0.89

0.87

4.67

0.89

0.89

3.67

0.81

0.82

0.67

0.88

Resizing

(scale = 0.1)

0.31

0.78

087

0.78

3.11

0.78

0.87

3.11

0.78

0.87

0.91

0.75

Median filter [3 × 3]

0.67

0.98

0.93

0.98

0.67

0.98

0.93

0.67

0.98

0.93

0.87

0.98

Median filter [5 × 5]

2.44

0.90

0.96

0.90

2.44

0.90

0.96

2.44

0.90

0.96

0.44

0.88

Rotation 10˚

4.27

0.89

0.91

0.89

4.27

0.89

0.91

4.27

0.89

0.91

0.89

0.88

Rotation 30˚

3.49

0.87

0.78

0.87

4.41

0.84

0.79

3.49

0.73

0.78

0.91

0.78