The Blind Watermarking Method Simulation Research Based on Wavelet Tree Quantization

Fang Sun; Peng Li

doi:10.4028/www.scientific.net/AMM.548-549.1076

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 548-549The Blind Watermarking Method Simulation Research...

The Blind Watermarking Method Simulation Research Based on Wavelet Tree Quantization

Abstract:

This article studies image copyright protection algorithm based on watermark. Aimed at the defect that watermark loading algorithm easily leads to the loss of original image information, it proposes a kind of quantization based on wavelet tree structure so that in the watermark extraction process, it can restore the original intact image without original image or watermark information. First, it makes use of level-four wavelet transform to construct tree wavelet coefficient waveband diagram. Then it discretizes and insets watermark information into different waveband nodes of tree structure according to coefficient variation maximum principle. By designing self-adaption threshold value during extracting process, it can restrict some common watermarking loss better, such as smoothing, mean value filtering and gaussian noise. The experiment result proves that this method can make watermark image the visually same as the original image and watermark can still be extracted effectively after preprocessing.

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Periodical:

Applied Mechanics and Materials (Volumes 548-549)

Pages:

1076-1079

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.548-549.1076

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Online since:

April 2014

Authors:

Fang Sun*, Peng Li

Keywords:

Image Processing, Intact, Watermark, Wavelet Transform (WT)

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* - Corresponding Author

References

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