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Figure 4. Test images with the watermark used

Figure 4 Test images with the watermark used

Related Figures (9)

Figure 1. Positively and negativelly affected pixels Coordinates of the positively-affected pixel are given by:
Figure 1. Positively and negativelly affected pixels Coordinates of the positively-affected pixel are given by:
the blue blocs and those of the radial symmetry transform blocs of watermarked image Figure 2. The mark insertion scheme
the blue blocs and those of the radial symmetry transform blocs of watermarked image Figure 2. The mark insertion scheme
Table 2. Attacks used in different tests.
Table 2. Attacks used in different tests.
Table 1. imperceptibility and robustness of the watermark in absence of attacks Table 2. Attacks used in different tests.
Table 1. imperceptibility and robustness of the watermark in absence of attacks Table 2. Attacks used in different tests.
Table 3. Robustness of the proposed scheme (NC and BCR) over different attacks Figure 5. Comparaison of NC rates face to gaussian filtering
Table 3. Robustness of the proposed scheme (NC and BCR) over different attacks Figure 5. Comparaison of NC rates face to gaussian filtering
Figure 6. Comparaison of NC rates face to salt & peppers noise (density 0.05) Figure 7. Comparaison of NC rates face to sharpening attack
Figure 6. Comparaison of NC rates face to salt & peppers noise (density 0.05) Figure 7. Comparaison of NC rates face to sharpening attack
Figure 8. Comparaison NC rates face to histogram equalization attack Figure 9. Comparaison of NC rates face to cropping attack
Figure 8. Comparaison NC rates face to histogram equalization attack Figure 9. Comparaison of NC rates face to cropping attack
Figure 6. Comparaison of NC rates face to salt & peppers noise (density 0.05)
Figure 6. Comparaison of NC rates face to salt & peppers noise (density 0.05)
Figure 7. Comparaison of NC rates face to sharpening attack Figure 8. Comparaison NC rates face to histogram equalization attack
Figure 7. Comparaison of NC rates face to sharpening attack Figure 8. Comparaison NC rates face to histogram equalization attack
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