Abstract
In this paper, in order to mitigate the channel conditions and improve the quality of the watermark, we proposed the application of LDPC codes on implementing a fairly robust image watermarking system. The implemented watermarking system operates in the spectrum domain where a subset of the discrete wavelet transform (DWT) coefficients is modified by the watermark without using the original image during watermark extraction. The quality of watermark is evaluated by taking into account the trade-off between the chip-rate and the rate of LDPC codes. Many simulation results are presented in this paper, these results indicate that the quality of the watermark is improved greatly and the proposed system based on LDPC codes is very robust to attacks.
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© 2004 Springer-Verlag Berlin Heidelberg
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Yi, Y., Lee, M.H., Kim, J.H., Hwang, G.Y. (2004). Robust Wavelet-Based Information Hiding through Low-Density Parity-Check (LDPC) Codes. In: Kalker, T., Cox, I., Ro, Y.M. (eds) Digital Watermarking. IWDW 2003. Lecture Notes in Computer Science, vol 2939. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-24624-4_9
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DOI: https://doi.org/10.1007/978-3-540-24624-4_9
Publisher Name: Springer, Berlin, Heidelberg
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