On Secure Digital Image Watermarking Techniques
نویسندگان
چکیده
منابع مشابه
On Secure Digital Image Watermarking Techniques
Digital watermarking is used to hide the information inside a signal, which can not be easily extracted by the third party. Its widely used application is copyright protection of digital information. It is different from the encryption in the sense that it allows the user to access, view and interpret the signal but protect the ownership of the content. One of the current research areas is to p...
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AbstrAct With the rapid advance in digital network, digital libraries, and particularly WWW (World Wide Web) services, we can retrieve many kinds of images on personal and mobile computer anytime and anywhere. At the same time, secure image archiving is becoming a major research area because the serious concern is raised about copyright protection and authority identification in digital media. ...
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In this paper a wavelet-based logo watermarking scheme is presented. The logo watermark is embedded into all sub-blocks of the LLn sub-band of the transformed host image, using quantization technique. Extracted logos from all sub-blocks are merged to make the extracted watermark from distorted watermarked image. Knowing the quantization step-size, dimensions of logo and the level of wavelet tra...
متن کاملA Robust Digital Image Watermarking Scheme Based on DWT
In this paper a wavelet-based logo watermarking scheme is presented. The logo watermark is embedded into all sub-blocks of the LLn sub-band of the transformed host image, using quantization technique. Extracted logos from all sub-blocks are merged to make the extracted watermark from distorted watermarked image. Knowing the quantization step-size, dimensions of logo and the level of wavelet tra...
متن کاملA Secure and Robust Image Digital Watermarking
The digital watermarking is used to protect the intellectual property rights in the multimedia field. It consists of algorithms which embed in digital multimedia data such as video, image or audio, an invisible information related to its owner and its. In order to protect the watermarked data, a cryptographically secure pseudo-noise signal is needed. In this paper we propose a technique for gen...
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ژورنال
عنوان ژورنال: Journal of Information Security
سال: 2011
ISSN: 2153-1234,2153-1242
DOI: 10.4236/jis.2011.24017