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

<table class="table-group" id="tab2"><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">PSNR</td><td class="align_center">66.0090</td><td class="align_center">66.0113</td><td class="align_center">65.9934</td></tr><tr><td class="align_left">NC</td><td class="align_center">0.9849</td><td class="align_center">0.9890</td><td class="align_center">0.9905</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>PSNR (dB) and NC values of the watermarked images.</div>

Security and Communication Networks

tab2

Table 2

Table 2: Robust Watermarking Algorithm against the Geometric Attacks based on Non-Subsampled Shearlet Transform and Harris-Laplace Detector 