open access

https://hdl.handle.net/2115/39729

A Sequence Estimation Method based on EM Algorithm and its Application to the Watermark Detection Problem

英語

2009-10-04

Asia-Pacific Signal and Information Processing Association, 2009 Annual Summit and Conference, International Organizing Committee

Proceedings : APSIPA ASC 2009 : Asia-Pacific Signal and Information Processing Association, 2009 Annual Summit and Conference

410-413

APSIPA ASC 2009: Asia-Pacific Signal and Information Processing Association, 2009 Annual Summit and Conference. 4-7 October 2009. Sapporo, Japan. Poster session: Signal Processing Theory and Methods I (6 October 2009).

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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