Image Robust Watermarking Method Based on DWT-SVD Transform and Chaotic Map

Figure 8

Histogram comparison. (a) Lena. (b) Watermarked lena. (c) Baboon. (d) Watermarked baboon. (e) Boat. (f) Watermarked boat. (g) Couple. (h) Watermarked couple. (i) Pepper. (j) Watermarked pepper. (k) Lake. (l) Watermarked lake. (m) Man. (n) Watermarked man.

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