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

Table 3

PSNR and SSIM values of reversible watermarked images with watermark deer and  = 0.6 and  = 0.5

Cover image	Proportion	PSNR				SSIM
	r	Hu and Jeon [5]	Chen et al. [7]	Mohammad et al. [8]	Proposed	Hu and Jeon [5]	Chen et al. [7]	Mohammad et al. [8]	Proposed
Wood rabbit	2	18.4266	24.3363	22.1769	26.0236	0.8345	0.8877	0.8911	0.9537
	3	21.7123	26.9410	25.0400	31.3428	0.9244	0.9408	0.9244	0.9833
	4	24.3560	29.1749	27.0238	34.8297	0.9591	0.9657	0.9374	0.9919
Tabby	2	18.9791	24.0190	21.8911	24.3674	0.8316	0.8681	0.8812	0.9414
	3	22.4079	27.7339	25.1256	28.2703	0.9226	0.9379	0.9120	0.9739
	4	25.0841	30.3175	26.9989	31.0978	0.9563	0.9645	0.9246	0.9858
Partridge	2	19.3492	25.3639	23.0163	24.3671	0.8438	0.9015	0.9144	0.9465
	3	22.5405	27.4809	26.3797	28.9374	0.9310	0.9439	0.9456	0.9783
	4	24.8129	29.1759	28.6298	32.0614	0.9611	0.9639	0.9571	0.9883