As the rapid development of Internet and digital multimedia technologies, how to protect the integrity and authenticity of digital products becomes an urgent problem. The traditional digital signature technology can effectively solve this problem, but digital signatures are normally stored in the header of multimedia information, with the development of software technology, the digital signature
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Digital watermarking technology can embed copyright information that is on behalf of theowner’s identity into the digital products to achieve copyright protection, content authentication andso on. Therefore, the digital image watermarking technology has become a hot topic. According tothe requirements of digital image content authentication, this thesis puts forward two types ofwatermarking algorithms: One is
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With the development of the Internet and digital technology, the digital multimedia’s production, acquisition and transmission become more and more convenient. The widely using of edition software leads to that multimedia data can be easily tempered under low cost, and the authenticity and integrity of the speech files are often doubted. As an effectively complementary
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Traditional method of signal sampling obeys the Shannon/Nyquist sampling theorem which specifies that one must sample at least two times faster than the signal bandwidth when capturing a signal. However, in recent years, a method called compressive sensing breaks through the restriction of this theorem. We can use the measurement matrix to integrate the sampling
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With the development of network and multimedia techniques, the creation and distribution of e-works become more and more easily, however, pirated copies and content tampers of digital works also become more and more popular. Digital watermarking technique as a countermeasure for copyright protection and content authentication has attracted many eyes from academic and industrial world
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With the deep development of E-government application, the modes of government workings change largely. But E-government brings security problem along with the high efficiency. How to improve the government’s working efficiency through ensuring information security is a hot question. E-government application involves some confidential data. How to ensure the authenticity and the integrality of the
(Read More…)
With the development of network and multimedia techniques, the creation and distribution of e-works become more and more easily, however, pirated copies and content tampers of digital works also become more and more popular. Digital watermarking technique as a countermeasure for copyright protection and content authentication has attracted many eyes from academic and industrial world
(Read More…)
With the deep development of E-government application, the modes of government workings change largely. But E-government brings security problem along with the high efficiency. How to improve the government’s working efficiency through ensuring information security is a hot question. E-government application involves some confidential data. How to ensure the authenticity and the integrality of the
(Read More…)
With the development of network and multimedia techniques, the creation and distribution of e-works become more and more easily, however, pirated copies and content tampers of digital works also become more and more popular. Digital watermarking technique as a countermeasure for copyright protection and content authentication has attracted many eyes from academic and industrial world
(Read More…)
With the deep development of E-government application, the modes of government workings change largely. But E-government brings security problem along with the high efficiency. How to improve the government’s working efficiency through ensuring information security is a hot question. E-government application involves some confidential data. How to ensure the authenticity and the integrality of the
(Read More…)
