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A new method for digital image watermarking which does not require the original image for watermark detection. The watermark is added in select coefficients with significant image energy in the transform domain in order to ensure non-erasability of the waterrmark. Advantages of the proposed method include: improved resistance to attacks on the watermark, implicit visual masking utilizing the time-frequency localization property of wavelet transform and a robust definition for the threshold which validates the watermark.

Index Terms: Wavelet, watermark, watermark casting, watermark detection, digital watermarking, copyright.

 

 

 

 

Figure 1. Watermarked image



A simple and effective source code for Digital watermarking for grayscale images.

Release
Date
Major features
1.0

2005.09.11



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Wavelet-based Watermarking. Click here for your donation. In order to obtain the source code you have to pay a little sum of money: 79,90 EUROS (less than 111,86 U.S. Dollars).

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The authors have no relationship or partnership with The Mathworks. All the code provided is written in Matlab language (M-files and/or M-functions), with no dll or other protected parts of code (P-files or executables). The code was developed with Matlab 14 SP1. Matlab Wavelet Toolbox is required. The code provided has to be considered "as is" and it is without any kind of warranty. The authors deny any kind of warranty concerning the code as well as any kind of responsibility for problems and damages which may be caused by the use of the code itself including all parts of the source code.

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