NDLI: The effect of quality scalable image compression on robust watermarking

Content Provider	IEEE Xplore Digital Library
Author	Bhowmik, D. Abhayaratne, C.
Copyright Year	2009
Description	Author affiliation: Department of Electronic and Electrical Engineering, The University of Sheffield, S1 3JD, United Kingdom (Bhowmik, D.; Abhayaratne, C.)
Abstract	The effect of quantization based compression in quality scalable image coding on the robustness of wavelet based watermarking is presented. The non-blind direct modification type watermarking is considered for the analysis presented in this paper. First we present the analysis considering any quantization parameter and then restrict it to the integer powers of two to model the bit-plane discarding based quantization used in quality scalable coding, such as JPEG2000. This work assumes that the watermark embedding and compression uses the same wavelet filters. The derived model shows the relationship between the modified coefficients and the quantization factor, which is then used to obtain the conditions for the correct watermark extraction under compression. Based on this analysis, one can select wavelet coefficients for embedding the watermark in a manner that the correct watermark extraction is possible for a given quantization level. The results show higher robustness when this model is used for embedding the watermark. The paper also evaluates the performance of the model when the watermark embedding and the compression wavelet filters are not the same.
Starting Page	1
Ending Page	8
File Size	1380973
Page Count	8
File Format	PDF
ISBN	9781424432974
DOI	10.1109/ICDSP.2009.5201225
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-07-05
Publisher Place	Greece
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Image coding Robustness Watermarking Quantization Scalability Transform coding Wavelet domain Filters Wavelet analysis Wavelet coefficients Quality scalability Wavelet based Watermarking Compression JPEG2000
Content Type	Text
Resource Type	Article

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