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Digital watermarking paper

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Skip to search form Skip to main content You are currently offline. Some features of the site may not work correctly. Sharma and A. Singh and P. Sharma , A. Singh , P.
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Document Watermarking: Create & Use Watermarks to Deter Copying

Digital watermarking paper
Digital watermarking paper
Digital watermarking paper
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Digital Watermarks: What Hides Within | CSO Online

With the rapid growth of Internet and networks technique, multimedia data transforming and sharing is common to many people. Multimedia data is easily copied and modified, so necessity for copyright protection is increasing. It is the imperceptible marking of multimedia data to "brand" ownership. Digital watermarking has been proposed as technique for copyright protection of multimedia data.
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Digital Watermarks: What Hides Within

This paper proposes a new adaptive watermarking scheme for digital images, which has the properties of blind extraction, invisibility, and robustness against attacks. The typical scheme for invisibility and robustness consisted of two main techniques: finding local positions to be watermarked and mixing or embedding the watermark into the pixels of the locations. In finding the location, however, our scheme uses a global space such that the multiple watermarking data is spread out over all four lowest-frequency subbands, resulting from n -level Mallat-tree 2D dimensional DWT, where n depends on the amount of watermarking data and the resolution of the host image, without any further process to find the watermarking locations. To embed the watermark data into the subband coefficients, weighting factors are used according to the type and energy of each subband to adjust the strength of the watermark, so we call this an adaptive scheme. To examine the ability of the proposed scheme, images with various resolutions are tested for various attacks, both pixel-value changing attacks and geometric attacks.
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This is my master's thesis , it research about watermarking based on DWT frequency domain. Work fast with our official CLI. Learn more. If nothing happens, download GitHub Desktop and try again. If nothing happens, download Xcode and try again.
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