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

Figure 16

(a)-(c) The difference of adjacent pixels for frames 1-3 of carrier and watermarked images when the difference is considered row-wise. In row-wise, the difference of those two image pixels is considered whose positions are in same row but separated by a single column. Similarly, (d)-(f) show the difference of adjacent pixels for frames 1-3 of carrier and watermarked images when the difference is considered column-wise. In column-wise, the difference of those two image pixels is considered whose positions are in same column but separated by a single row. In all these images, the differences of adjacent pixels of carrier and watermarked images are almost the same showing the robustness of proposed watermarking algorithm.

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