NDLI: Improved quantization index modulation watermarking robust against amplitude scaling and constant change distortions

Content Provider	IEEE Xplore Digital Library
Author	Xinshan Zhu Zhi Tang
Copyright Year	2008
Description	Author affiliation: Inf. Eng. Coll., Yangzhou Univ., Yangzhou (Xinshan Zhu) \|\| Inst. of Comput. Sci. & Technol., Peking Univ., Beijing (Zhi Tang)
Abstract	The original quantization index modulation watermarking is largely vulnerable to valumetric scaling and constant change attacks. To overcome these two drawbacks, the normalized dither modulation (NDM) is presented in this paper. The main idea of it is to construct a gain-invariant vector with zero mean for quantization. Performance analysis shows that NDM is theoretically invariant to valumetric scaling and constant change and achieves similar performance to dither modulation (DM) in other aspects. Some useful strategies are further provided to improve the performance of NDM. Experiments on real data (images) demonstrate that not only the proposed method is extremely robust to amplitude scaling and constant change, and outperform the original DM subject to several other typical attacks.
Starting Page	433
Ending Page	436
File Size	247978
Page Count	4
File Format	PDF
ISBN	9781424417650
ISSN	15224880
DOI	10.1109/ICIP.2008.4711784
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-10-12
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Quantization Amplitude modulation Watermarking Robustness Delta modulation Performance analysis Digital modulation Educational institutions Computer science Decoding constant change Digital watermarking quantization index modulation (QIM) valumetric scaling
Content Type	Text
Resource Type	Article

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