M-Ary Phase Modulation for Digital Watermarking
نویسندگان
چکیده
منابع مشابه
M-Ary Phase Modulation for Digital Watermarking
In spread spectrum based watermarking schemes, it is a challenging task to embed multiple bits of information into the host signal. M -ary modulation has been proposed as an effective approach to multibit watermarking. It has been proved that an M -ary modulation based watermarking system outperforms significantly a binary modulation based watermarking system. However, in the existing M -ary mo...
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In this paper we consider the issue of Distributed Video Coding (DVC) over practical channel which involves Gaussian noisy channel. Since the research on DVC over practical channel with respect to modulation is still incomplete this paper does a comprehensive study on DVC modulation techniques to fill the gap. It discusses the suitability of M-Ary modulation to DVC on the basis of energy consum...
متن کاملPerformance Improvement in Spread Spectrum Watermarking via M-band Wavelets and N-ary Modulation
Dept. of Electronics and Telecommunication Engineering, Bengal Engineering and Science University, Shibpur Howrah-711103, India [email protected] Center for Soft Computing Research, Indian Statistical Institute, 203 B. T. Road, Kolkata-700 108, India [email protected] Dept. of Electrical and Computer Engineering, University of Alberta, Edmonton, Alberta, Canada T6G2V4 [email protected]...
متن کاملComparative performance of watermarking schemes using M-ary modulation with binary schemes employing error correction coding
A common application of digital watermarking is to encode a small packet of information in an image, such as some form of identification that can be represented as a bit string. One class of digital watermarking techniques employs spread spectrum like methods where each bit is redundantly encoded throughout the image in order to mitigate bit errors. We typically require that all bits be recover...
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Spread Spectrum (SS) modulation principle has been widely used in digital watermarking due to its distinguishing characteristics viz. excellent security and robustness in performance. The use of wide spectrum of the host signal in message hiding process puts a limit on the data rate subject to a given embedding distortion. In SS communication the use of M– ary modulation is a popular extension ...
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ژورنال
عنوان ژورنال: International Journal of Applied Mathematics and Computer Science
سال: 2008
ISSN: 1641-876X
DOI: 10.2478/v10006-008-0009-8