A Sequence Estimation Method based on EM Algorithm and its Application to the Watermark Detection Problem
نویسنده
چکیده
In this paper, we address a sequence estimation problem formulated as a kind of blind deconvolution problem. We employ Bayesian estimation approach and treat this problem. As a solution to this problem, we present a sequence estimation method using EM (Expectation – Maximization) algorithm. The proposed method is applied to the watermark detection problem, which also becomes a blind deconvolution one. Numerical experiments using the DWT (Discrete Wavelet Transformation) based watermarking system show good performance as expected by us.
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تاریخ انتشار 2009