| Autor: |
Singh, Kamred Udham, Singhal, Achintya |
| Předmět: |
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| Zdroj: |
International Journal of Advanced Research in Computer Science; May/Jun2017, Vol. 8 Issue 5, p1053-1058, 6p |
| Abstrakt: |
Color image watermark has more bit information than gray-scale or binary watermark so it is a challenging issue to design a robust color watermarking scheme for content authentication. In watermarking schemes, the Discrete Cosine Transformation (DCT) is broadly used because its frequency component separation is very useful. Furthermore, LU Factorization has little influence on the visual quality of the image watermark. In this paper a LL Chaos and LU Factorization based Non-Blind Image Watermarking technique is proposed. This watermarking scheme is based on Discrete Cosine Transformation along with Logistic and Lorentz chaotic maps with LU Factorization for estimating the embedding strength and location.The experimental results reveal that this watermarking algorithm is robust against different image processing attacks to a certain degree viz. contrast adjustment, cropping and colouring. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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