With the rapid development of computer and network technology, digital multimedia information resources are widely used in people’s work and life. Computer formidable information-handling capacity provides the enormous convenience for the multimedia information’s deposits. At the same time, the information copyright protection and series of related questions also become a hot topic. As a new
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Due to the better decomposition characteristics of contourlet transform compared with wavelet transform, the research combined human visual system with contourlet transform is a new research hot spot of digital watermarking technology.By analyzing the characteristics of contourlet transform, human visual system and HVME (Human Vision Masking Effection), a new digital watermarking algorithm is proposed which
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With the development of information technology and computer networks, digital video and pictures, which takes a rich amount of information, are widely disseminated in networks. That has introduced great challenge for the authenticity and copyright protection of the multimedia. Digital watermark as a new copyright protection technology, embeds watermark into the multimedia and extracts the
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With the development of information technology and computer networks, digital video and pictures, which takes a rich amount of information, are widely disseminated in networks. That has introduced great challenge for the authenticity and copyright protection of the multimedia. Digital watermark as a new copyright protection technology, embeds watermark into the multimedia and extracts the
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21 century is an era of information. With the rapid development of computer network communication technology, there are more and more digital products; the exchange and transmission of digital media data become more and more convenient. The digital media data may subject to variety of attacks such as illegal copying, forgery and falsification in the
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The rapid development of IOT technology has provided a broad platform for application of two-dimenisonal barcode in china. However, coding method of two-diminsional barcode is open, and uniform standard coding model makes it insufficient in terms of confidentiality, affecting its scope of application seriously. Digital watermarking technology is put forward to solve the identification problem.
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With the rapid development of network informationization, the Internet brings an unprecedented mass of information meanwhile the nework information security issues are more and more serious. As a way to solve computer security problems, Cryptography and watermarking technology have been concerned in recent years.On the basis of the LUC and the ElGamal public key cryptography,
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With the criminal activity of forgery becoming more and more, the credential anti-counterfeiting technology has also rapidly developed recently. At present, the credential anti-counterfeiting technologies mainly based on special techniques and special materials. As a result, it not only increases the certificate of the complexity of the production process of the certificate, but also improves
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Research on algorithm and robustness of digital image watermarkThe digital watermark is the information such as pictures, characters and numbers thatare embedded in the digital products. But I consider it as a process in which theverification information is embedded or extracted under the condition that we do notchange the property and application of the product.
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The In recent years, the research on HD video electronic police is becoming a hotproblem of the intelligent traffic system. HD video electronic police contains theory andtechnology in areas such as Network, Communications, Digital Image Processing andPattern Recognition, and runs inside an embedded system. It is used in traffic junction,highway entrance and park as an
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