基于Contourlet变换与SVD分解的鲁棒水印算法<br>Robust Image Watermarking Algorithm Based on Contourlet Transform and SVD Decomposition
نویسندگان
چکیده
منابع مشابه
A New SVD based Hybrid Color Image Watermarking for Copyright Protection using Contourlet Transform
The authors propose a new hybrid watermarking scheme for copyright protection of color images using contourlet transform and singular value decomposition. The host color image and color watermark images are decomposed into directional subbands using contourlet transform and then applied Singular value decomposition to mid frequency subband coefficients. The singular values of mid frequency subb...
متن کاملA New SVD based Hybrid Color Image Watermarking for Copyright Protection using Contourlet Transform
The authors propose a new hybrid watermarking scheme for copyright protection of color images using contourlet transform and singular value decomposition. The host color image and color watermark images are decomposed into directional sub-bands using contourlet transform and then applied Singular value decomposition to mid frequency sub-band
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متن کاملA Novel Robust Watermarking Technique Based on Nonsubsampled Contourlet Transform and SVD
The paper proposes a novel robust watermarking technique based on newly introduced Nonsubsampled contourlet transform(NSCT) and singular value decomposition(SVD) for multimedia copyright protection. The NSCT can give the asymptotic optimal representation of the edges and contours in image by virtue of the characteristics of good multi resolution shift invariance and multi directionality. After ...
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Abstract In this paper, embedding a watermark in the image is performed in discrete Contourlet transform (CT) domain. It is known that the CT is able to capture the directional edges and contours superior to discrete wavelet transform. We introduce three methods. The first proposed method is based on embedding watermark bits into the singular value of the selected blocks within low-pass sub-ban...
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ژورنال
عنوان ژورنال: Computer Science and Application
سال: 2012
ISSN: 2161-8801,2161-881X
DOI: 10.12677/csa.2012.25046