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

Figure 15

Watermark robustness against common attacks: (a) without attacks, (b) histogram equalization, (c) 3×3 mean filtering, (d) Laplacian sharpening, (e) Gaussian noise addition, and (f) JPEG compression with QF = 50.

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