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Hologram watermarks for document authentications

Hologram watermarks for document authentications

引用

international conference on information technology: coding and computing (itcc)

作者： J. Dittmann L.C. Ferri C. Vielhauer GMD Darmstadt Germany Institute for Industrial Process and System Communications (KOM) Technical University of Darmstadt Darmstadt Germany

ISBN: (纸本)0769510620

We present a new integrity watermark based on hologram techniques for document authentication. We focus on ID-Card watermarks. The main goal is to illustrate the use of computer-generated hologram coding techniques, to produce content-related data to be embedded into the personal data printed on an identification card with watermarking techniques. We call this special application of an integrity watermark technique a hologram watermark.

关键词： Watermarking Authentication Holography Inspection Embedded computing Risk analysis Security information systems Communication industry Application software

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An overview of security issues in streaming video

An overview of security issues in streaming video

引用

international conference on information technology: coding and computing (itcc)

作者： E.T. Lin G.W. Cook P. Salama E.J. Delp Video and Image Processing Laboratory(VIPER) School of Electrical and Computer Engineering Purdue University West Lafayette IN USA Department of Electrical and Computer Engineering Purdue School of Engineering and Technology Purdue University Indiana University Indianapolis IN USA

The article describes some of the security issues in streaming video over the Internet. If high quality video sequences are to be delivered to computers and digital television systems over the Internet in our "di... 详细信息

ISBN: (纸本)0769510620

关键词： Streaming media Video compression Bandwidth Internet Protection Decoding Security Video sequences IP networks Authentication

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Optimal algebraic coding of noisy and distorted images

Optimal algebraic coding of noisy and distorted images

引用

international conference on information technology: coding and computing (itcc)

作者： A. Kalyuzhny A. Kovtonyuk DELTA S.P.E Kiev Ukraine

ISBN: (纸本)0769510620

The traditional approach to coding of noisy and distorted images assumes preliminary enhancement and restoring of images and only then in fact their coding. A novel technique is proposed, where the indicated procedures are combined in optimum algebraic coding. At the heart of the approach is the optimization of coordinate basis of an image representation. It is shown, that the required optimum properties have the eigenfunctions of Fisher's information operator known in the statistical theory of estimation. These functions satisfying defined criteria of a selection are called Principal information Components (PIC). The PIC-projection technique for improvement of an arbitrary image decomposition is proposed. The given technique allows primary physical representation of an image to decrease a statistical error of its coding on noisy data.

关键词： Image coding Signal processing Image restoration Speech processing Data mining Discrete cosine transforms Vectors Linear algebra Standardization Eigenvalues and eigenfunctions

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JPEG2000: highly scalable image compression

JPEG2000: highly scalable image compression

引用

international conference on information technology: coding and computing (itcc)

作者： M.W. Marcellin A. Bilgin Department of Electrical and Computer Engineering University of Arizona Tucson Tucson AZ USA

ISBN: (纸本)0769510620

JPEG2000 is the latest ISO/IEC image compression standard. It is distinct from previous standards in that it is more than an input-output filter. JPEG2000 enables decompression of many image products from a single compressed file and offers several opportunities for compressed domain processing. This paper describes the feature set of the JPEG2000 compression standard, followed by a high level description of the algorithm.

关键词： Image coding Transform coding Image quality Decoding Filters Spatial resolution Image resolution Image processing Image storage Data mining

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Speech content integrity verification integrated with ITU G.723.1 speech coding

Speech content integrity verification integrated with ITU G....

引用

international conference on information technology: coding and computing (itcc)

作者： Chung-Ping Wu C.-C.J. Kuo Department of Electrical Engineering-Systems University of Southern California Los Angeles CA USA

ISBN: (纸本)0769510620

A speech content integrity verification scheme integrated with ITU G.723.1 speech coding to minimize the total computational cost is proposed in this research. Speech features relevant to the semantic meaning are extracted, encrypted and attached as the header information. This scheme is not only much faster than cryptographic bitstream integrity algorithms, but also more compatible with a variable of applications. The speech signal could go through recompression, amplification, transcoding, re-sampling, D/A and A/D conversion and minor white noise pollution without triggering the verification alarm.

关键词： Speech coding Cryptography Image coding Data mining Protection Propagation losses Costs Transcoding Humans Watermarking

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An overview of MPEG-4 object-based encoding algorithms

An overview of MPEG-4 object-based encoding algorithms

引用

international conference on information technology: coding and computing (itcc)

作者： A. Vetro Huifang Sun MERL-Mitsubishi Electric Research Laboratories Murray Hill NJ USA

ISBN: (纸本)0769510620

Describes several object-based encoding issues and provides solutions based on the MPEG-4 coding standard. Specifically, we first consider the general problem of object-based rate control and the allocation of bits among each object. Going a step further, we then discuss the issues related to the allocation of bits between shape and texture, and propose a method to model the rate distortion characteristics of the shape. Finally, we describe some preliminary work that we have been doing towards optimizing the tradeoff in spatial and temporal quality. For object-based coding, it is believed that significant coding gains can be achieved.

关键词： MPEG 4 Standard Encoding Shape Video sequences Bit rate Rate-distortion Video coding Sun Laboratories Spatial resolution

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Optimizing watermarking to improve the robustness without affecting the fidelity

Optimizing watermarking to improve the robustness without af...

引用

international conference on information technology: coding and computing (itcc)

作者： K. Kamijo Tokyo Research Laboratory IBM Japan Limited Yamato Kanagawa Japan

ISBN: (纸本)0769510620

One of the expected application areas for the practical use of the watermarking technology is for protecting contents from illegal distribution and/or copying, such as for DVD copy protection. In such application areas, the watermarked contents should be robust with regards to various kinds of post-processing, such as digital-to-analog or analog-to-digital (D/A, A/D) conversion, MPEG compression, and VHS recording. This paper introduces a watermark embedding method that maximizes the strength of the detected watermark signal, an embedding method robust against MPEG compression, and an embedding method robust against VHS recording, without affecting the fidelity of the watermarked contents.

关键词： Watermarking Robustness Transform coding Protection Statistical analysis Data security Video recording Disk recording Laboratories DVD

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Adapting information presentation and retrieval through user modelling

Adapting information presentation and retrieval through user...

引用

international conference on information technology: coding and computing (itcc)

作者： N. Bogonikolos C. Makris A. Tsakalidis B. Vassiliadis ZEUS Consulting SA Patras Greece Department of Computer Engineering and Informatics Patras Greece

ISBN: (纸本)0769510620

The amount of structured information available in Internet sources is rapidly increasing. This information includes commercial databases on product information and information on e-services forming the so-called e-shops. However, the process of using this information has become more complicated, and can sometimes be tedious for users with different goals, interests, levels of expertise, abilities and preferences. This paper deals with the definition of an architectural framework for intelligent, adaptive and personalised navigation within large hypertext electronic commerce environments.

关键词： information retrieval Business Usability Decision making Runtime Informatics Internet Databases Navigation Electronic commerce

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Reconfigurable media processing

Reconfigurable media processing

引用

international conference on information technology: coding and computing (itcc)

作者： A. Dasu S. Panchanathan Visual Computing and Communications Laboratory Arizona State University USA

ISBN: (纸本)0769510620

Multimedia processing is becoming increasingly important with a range of applications. Existing approaches for processing multimedia data can be broadly classified into two categories, namely: (i) microprocessors with extended media processing capabilities; and (ii) dedicated implementations (ASICs). The complexity, variety of techniques and tools associated with multimedia processing points to the opportunities for reconfigurable computing devices which will be able to adapt the underlying hardware dynamically in response to changes in the input data or processing environment. The paper proposes a novel approach to design a dynamically reconfigurable processor by performing hardware software co-design for a media processing application. As an example, the analysis of the shape coding module of MPEG-4 is chosen to demonstrate the potential for reconfigurability.

关键词： Hardware Graphics Microprocessors Multimedia computing Video compression Transform coding Application software MPEG 4 Standard Animation Speech analysis

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FEC-based video streaming over packet loss networks with pre-interleaving

FEC-based video streaming over packet loss networks with pre...

引用

international conference on information technology: coding and computing (itcc)

作者： Jianfei Cai Chang Wen Chen Department of Electrical Engineering University of Missouri Columbia USA

ISBN: (纸本)0769510620

The authors present a FEC-based end-to-end error control scheme for video streaming over packet loss networks. We propose a novel robust video streaming system in which an interleaving is applied to the compressed bitstream before channel coding. The application of such preinterleaving is able to improve the performance of video streaming over packet loss networks because pre-interleaving can simultaneously satisfy different requirements arising from both channel coding and source coding. We demonstrate with simulations that the proposed approach can achieve a significant improvement for video streaming over heavy packet loss networks.

关键词： Streaming media Channel coding Interleaved codes Forward error correction Robustness Video compression Error correction Propagation losses Source coding Network servers

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