Robust Watermarking Algorithm against the Geometric Attacks based on Non-Subsampled Shearlet Transform and Harris-Laplace Detector

<div>Scaling attack on different images with different scaling factors 1.5 and 0.75, respectively: cameraman (a), (a1), extracted watermark (b), (b1); peppers (c), (c1), extracted watermark (d), (d1); couple (e), (e1), extracted watermark (f), (f1).</div>

Security and Communication Networks

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Figure 13

Figure 13: Robust Watermarking Algorithm against the Geometric Attacks based on Non-Subsampled Shearlet Transform and Harris-Laplace Detector 