Identification of Sparse Audio Tampering Using Distributed Source Coding and Compressive Sensing Techniques
نویسندگان
چکیده
منابع مشابه
Detection and Identification of Sparse Audio Tampering Using Distributed Source Coding and Compressive Sensing Techniques
In most practical applications, for the sake of information integrity not only it is useful to detect whether a multimedia content has been modified or not, but also to identify which kind of attack has been carried out. In the case of audio streams, for example, it may be useful to localize the tamper in the time and/or frequency domain. In this paper we devise a hash-based tampering detection...
متن کاملIdentification of Sparse Audio Tampering Using Distributed Source Coding and Compressive Sensing Techniques
The increasing development of peer-to-peer networks for delivering and sharing multimedia files poses the problem of how to protect these contents from unauthorized and, possibly, malicious manipulations. In the past few years, a large amount of techniques, including multimedia hashes and digital watermarking, have been proposed to identify whether a multimedia content has been illegally tamper...
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In this paper, we describe an image watermarking scheme using compressive sensing for detection of image tampering. We exploit dimensionality reduction and inherent computational security offered by compressive sensing. The frequency band containing the high energy is used to compute the hash and then its pseudo-random projections are obtained. These projections are embedded as a watermark into...
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In this paper, we address the convolutive blind source separation (BSS) problem with a sparse independent component analysis (ICA) method, which uses ICA to find a set of basis vectors from the observed data, followed by clustering to identify the original sources. We show that, thanks to the temporally localised basis vectors that result, phase information is easily exploited to determine the ...
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ژورنال
عنوان ژورنال: EURASIP Journal on Image and Video Processing
سال: 2009
ISSN: 1687-5176,1687-5281
DOI: 10.1155/2009/158982