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Title: A maximum a-posteriori identification criterion for wavelet domain watermarking
Authors: Ng, T.M. 
Garg, H.K. 
Keywords: Correlation detector
Generalised Gaussian
MAP detector
Wavelet transform
Issue Date: Nov-2009
Citation: Ng, T.M.,Garg, H.K. (2009-11). A maximum a-posteriori identification criterion for wavelet domain watermarking. International Journal of Wireless and Mobile Computing 3 (4) : 265-270. ScholarBank@NUS Repository.
Abstract: A detector based on Maximum A-posteriori Probability (MAP) criterion has been introduced for identifying image watermark in the Discrete Cosine Transform (DCT) domain. This type of detector has been shown to be optimum and robust to common image processing operations. In this paper, an MAP detector in the Discrete Wavelet Transform (DWT) domain is proposed. It is based on modelling the wavelet coefficients by a generalised Gaussian distribution. Simulations are used to compare the proposed detector with the conventional correlation detector in terms of detection effectiveness. Copyright © 2009 Inderscience Enterprises Ltd.
Source Title: International Journal of Wireless and Mobile Computing
ISSN: 17411084
DOI: 10.1504/IJWMC.2009.029346
Appears in Collections:Staff Publications

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