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

Table 6

NC values of the proposed scheme on different watermarked image with various attacks.

Attacks	Image
	Peppers	Couple	Cameraman
JPEG compression (75%)	0.9883	0.9842	0.9889
Gaussian low-pass filtering (0.1)	0.9901	0.9890	0.9890
Gaussian noise (0.1)	0.9783	0.9362	0.9843
Salt and pepper noise (0.03)	0.9705	0.9871	0.9891
Scaling (0.7) & rotation ()	0.9281	0.9907	0.9674