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

Figure 10

Test images: original images: (a) cameraman, (b) peppers, (c) couple; original watermark: (a1), (b1), (c1); watermarked images: (d), (e), (f); the extracted watermark: (d1), (e1), (f1).