Digital image dual watermarking using self-fractional fourier functions, bivariate empirical mode decomposition and error correcting code. Sharma, J., B., Sharma, K., K., & Sahula, V. Journal of Optics, Springer-Verlag, 2013.
Digital image dual watermarking using self-fractional fourier functions, bivariate empirical mode decomposition and error correcting code [pdf]Paper  bibtex   

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