Figure 14From: A Contourlet-Based Image Watermarking Scheme with High Resistance to Removal and Geometrical AttacksRecovered watermarks from Lena image after applying different noises (a) Salt and pepper (density = 0.0001) (b) Gaussian noise (density = 0.0001) (c) Speckle noise (density = 0.0001) (d) Poisson noise.Back to article page