Watermarking Techniques for Information Retrieving
نویسندگان
چکیده
منابع مشابه
Techniques for Multiple Watermarking
Digital media has become an integral part of modern lives. Whether surfing the web, watching satellite television, playing a digital video disc, or listening to digital music, a large part of our professional and leisure time is filled with all things digital. This is the basis for modern scientific and economic developments which is centered around the distribution of digital data to a worldwi...
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Recently we have witnessed great interest in watermarking technologies. Watermarking can be seen as a solution to overcome many security and authentication problems. Several watermarking methods have been proposed in the literature. In this paper, we review some of these techniques and their applications, properties, advantages and shortcomings. Moreover, we indicate that watermarking technolog...
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We show that if (Xs, s ≥ 0) is a right-continuous process, Yt = ∫ t 0 dsXs its integral process and τ = (τl, l ≥ 0) a subordinator, then the time-changed process (Yτl , l ≥ 0) allows to retrieve the information about (Xτl , l ≥ 0) when τ is stable, but not when τ is a gamma subordinator. This question has been motivated by a striking identity in law involving the Bessel clock taken at an indepe...
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ژورنال
عنوان ژورنال: IEICE ESS Fundamentals Review
سال: 2008
ISSN: 1882-0875
DOI: 10.1587/essfr.2.2_53