کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
564748 875643 2008 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Locally optimum detection for Barni's multiplicative watermarking in DWT domain
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر پردازش سیگنال
پیش نمایش صفحه اول مقاله
Locally optimum detection for Barni's multiplicative watermarking in DWT domain
چکیده انگلیسی

With the increasing demands of copyright protection, watermarking technology has being paid more and more attention. In the design of a watermarking algorithm, a good watermark detection scheme can improve the detection rate, which pushes an increasing number of researchers to work with optimum detectors. In this paper, we propose a locally optimum using a locally most powerful test with respect to Barni's multiplicative water marking which is based on the human visual system (HVS). In the proposed detection scheme, the probability density function of DWT coefficients is modeled using the generalized Gaussian distribution, and the decision threshold is obtained by the Neyman–Pearson (NP) criterion. Additionally, we prove that the existing correlation detection is a special case of the proposed locally optimum detection, and we provide an improved correlation threshold under the condition of locally optimum detection.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Signal Processing - Volume 88, Issue 1, January 2008, Pages 117–130
نویسندگان
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