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    A Wavelet Based Image Watermarking Scheme With A CDMA/Hadamard Embedding Technique

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    Date
    15-02-07
    Author
    Mwangi, Elijah
    Type
    Presentation
    Language
    en
    Metadata
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    Abstract
    A new blind digital image watermarking scheme that employs a Hadamard matrix to spread the CDMA watermark in selected DWT coefficients in a gray-level cover image is proposed. The coefficients are obtained from the 1- level DWT Haar decomposition of the image. A binary image is used as a watermark and is embedded to produce a watermarked image that is perceptually indistinguishable from the original image. A secret key is used to detect the presence of the watermark in a suspect image. The experimental results obtained by computer simulation show that the proposed scheme is robust against common attacks such as additive Gaussian noise, cropping, low pass filtering, and JPEG compression.
    URI
    http://ieeexplore.ieee.org/xpl/articleDetails.jsp
    http://hdl.handle.net/11295/66217
    Citation
    Mwangi, E. (2007, February). A wavelet based image watermarking scheme with a cdma/Hadamard embedding technique. In Signal Processing and Its Applications, 2007. ISSPA 2007. 9th International Symposium on (pp. 1-4). IEEE.
    Publisher
    University of Nairobi
    Collections
    • Faculty of Engineering, Built Environment & Design (FEng / FBD) [839]

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