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

Figure 18

Reversible color watermarked images with watermark deer embedded using different reversible visible watermarking schemes: (a1), (a2), and (a3) Hu and Jeon [5] (18.4826 dB, 19.0718 dB, and 19.6423 dB); (b1), (b2), and (b3) Chen et al. [7] (24.3150 dB, 23.9677 dB, and 23.2949 dB); (c1), (c2), and (c3) Mohammad et al. [8] (21.9525 dB, 21.5649 dB, and 22.1987 dB); (d1), (d2), and (d3) proposed scheme with  = 0.6 and  = 0.5 (26.2173 dB, 25.2189 dB, and 25.0240 dB).