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

<table class="table-group" id="tab5"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">Cover image</td><td class="align_center">Cameraman</td><td class="align_center">Peppers</td><td class="align_center">Couple</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">1.5</td><td class="align_center">0.9467</td><td class="align_center">0.9442</td><td class="align_center">0.9511</td></tr><tr><td class="align_left">0.75</td><td class="align_center">0.9823</td><td class="align_center">0.9844</td><td class="align_center">0.9769</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>NC values of the watermarked images under the different scaling factors.</div>

Security and Communication Networks

tab5

Table 5

Table 5: Robust Watermarking Algorithm against the Geometric Attacks based on Non-Subsampled Shearlet Transform and Harris-Laplace Detector 