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Digital Watermarking for Images--Its Analysis and Improvement Using Digital Signal Processing Technique--

Akio MIYAZAKI

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Summary :

In this paper, we discuss digital watermarking techniques besed on modifying the spectral coefficient of an image, classified into quantization-based and correlation-based watermarking techniques. We first present a model of the watermark embedding and extracting processes and examine the robustness of the watermarking system against common image processing. Based on the result, we clarify the reason why detection errors occur in the watermark extracting process and give a method for evaluating the performance of the watermarking system. And then we study an improvement of the watermark extracting process using the deconvolution technique and present some concluding remarks in the last section.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E85-A No.3 pp.582-590
Publication Date
2002/03/01
Publicized
Online ISSN
DOI
Type of Manuscript
Special Section INVITED PAPER (Special Section on the Trend of Digital Signal Processing and Its Future Direction)
Category
Applications

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