DocumentCode :
1515771
Title :
Robust Patchwork-Based Embedding and Decoding Scheme for Digital Audio Watermarking
Author :
Natgunanathan, Iynkaran ; Xiang, Yong ; Rong, Yue ; Zhou, Wanlei ; Guo, Song
Author_Institution :
Sch. of Eng., Deakin Univ., Geelong, VIC, Australia
Volume :
20
Issue :
8
fYear :
2012
Firstpage :
2232
Lastpage :
2239
Abstract :
This paper presents a novel patchwork-based embedding and decoding scheme for digital audio watermarking. At the embedding stage, an audio segment is divided into two subsegments and the discrete cosine transform (DCT) coefficients of the subsegments are computed. The DCT coefficients related to a specified frequency region are then partitioned into a number of frame pairs. The DCT frame pairs suitable for watermark embedding are chosen by a selection criterion and watermarks are embedded into the selected DCT frame pairs by modifying their coefficients, controlled by a secret key. The modifications are conducted in such a way that the selection criterion used at the embedding stage can be applied at the decoding stage to identify the watermarked DCT frame pairs. At the decoding stage, the secret key is utilized to extract watermarks from the watermarked DCT frame pairs. Compared with existing patchwork watermarking methods, the proposed scheme does not require information of which frame pairs of the watermarked audio signal enclose watermarks and is more robust to conventional attacks.
Keywords :
audio coding; decoding; discrete cosine transforms; watermarking; DCT coefficients; audio segment; digital audio watermarking; discrete cosine transform; embedding stage; patchwork watermarking methods; patchwork-based decoding scheme; patchwork-based embedding; watermark embedding; watermarked DCT frame pairs; watermarked audio signal; Decoding; Discrete cosine transforms; Educational institutions; Image segmentation; Robustness; Watermarking; Audio watermarking; discrete cosine transform (DCT); generalized Gaussian distribution; patchwork;
fLanguage :
English
Journal_Title :
Audio, Speech, and Language Processing, IEEE Transactions on
Publisher :
ieee
ISSN :
1558-7916
Type :
jour
DOI :
10.1109/TASL.2012.2199111
Filename :
6198872
Link To Document :
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