Research Article

A Robust Fractal Color Image Watermarking Algorithm

Figure 2

Comparisons of the two fractal color image coding methods: (a), (d) and (g) are original images; (b), (e) and (h) are the fractal representations of our proposed methods; (c), (f) and (i) are the fractal representations of the classic method [2].
638174.fig.002a
(a) Lena
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(b) PSNR 34.71 dB
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(c) PSNR 32.54 dB
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(d) Barbara
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(e) PSNR 30.37 dB
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(f) PSNR 28.57 dB
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(g) Peppers
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(h) PSNR 32.01 dB
638174.fig.002i
(i) PSNR 30.35 dB