Figure 5From: A New Robust Watermarking Scheme to Increase Image Security (a) Original Lena, (b) Lena created using only DC coefficients of original image, (c) Lena created using estimate formulas (Gonzales method [ 3 ]) on image (b), and (d) Lena created using estimate formulas (Veeraswamy method [ 4 ]) on image (b). Back to article page