A Robust Watermarking Scheme for Online Multimedia Copyright Protection Using New Chaotic Map

Figure 15

(a) LSBs of carrier image before the embedding of watermark and (b) LSBs of watermarked image after the embedding of watermark. For the plot, the 4 LSBs of carrier and watermarked images are picked and consider them as 4 MSBs of these two images and for 4 LSBs, 4 zeros are simply considered. It can be seen that there is no visual difference between these two images and thus our proposed algorithm is robust against LSB attack.

(a)

(b)