A Novel Improved Reversible Visible Image Watermarking Algorithm Based on Grad-CAM and JND

<div>ROI selection with different strategies: (a1), (a2), and (a3) Qi et al. [<a href="/journals/scn/2021/6652897/#B9">9</a>] with (<i>r</i>) = 2, 3, and 4, respectively; (b1), (b2), and (b3) proposed strategy with (<i>r</i>) = 2, 3, and 4, respectively.</div>

Security and Communication Networks

fig9

Figure 9

Figure 9: A Novel Improved Reversible Visible Image Watermarking Algorithm Based on Grad-CAM and JND 