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Dual channel watermarking - a filter perspective

conference contribution
posted on 2017-06-15, 00:00 authored by G Hua, G Bi, Yong XiangYong Xiang
Spread spectrum (SS) is one of the most commonly used watermarking techniques, but it suffers from host signal interference during watermark extraction. Besides the well-known developments of classical host interference rejecting SS techniques, i.e., improved spread spectrum (ISS) and correlation-aware improved spread spectrum (CAISS), a simple and effective treatment could be splitting the host signal into two channels (even-sample channel and odd-sample channel) before watermark embedding. Host signal interference is then suppressed by reconstructing the channels and taking the difference of them. This paper analyzes such a dual channel scheme from the perspective of digital filtering. We show that the dual channel based watermark extraction actually applies a high pass filter to the watermarked signal, and the performance when the filter coefficients are changed is also studied. The effectiveness of the dual channel scheme in rejecting host signal interference is confirmed via extensive experiments using both synthetic and real audio and image signals.

History

Event

Progress in Informatics and Computing. Conference (2016 : Shanghai, China)

Pagination

601 - 604

Publisher

IEEE

Location

Shanghai, China

Place of publication

Piscataway, N.J.

Start date

2016-12-23

End date

2016-12-25

ISBN-13

9781509034833

Language

eng

Publication classification

E Conference publication; E1 Full written paper - refereed

Copyright notice

2016, IEEE

Editor/Contributor(s)

Unknown

Title of proceedings

PIC 2016 - Proceedings of the 2016 IEEE International Conference on Progress in Informatics and Computing