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检索条件"任意字段=Mobile Multimedia/Image Processing for Military and Security Applications 2007"

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mobile multimedia/image processing for military and security applications 2007

Mobile Multimedia/Image Processing for Military and Security...

引用

mobile multimedia/image processing for military and security applications 2007

ISBN: (纸本)0819467014

The proceedings contain 24 papers. The topics discussed include: recent advances in multiview distributed video coding;super-resolution-based enhancement for real-time ultra-low-bit-rate video coding;signal compression via logic transforms;a prompt informatoin retrieval system on handheld devices;detecting and isolating malicious nodes in wireless ad hoc networks;switching theory-based steganographic system for JPEG images;new quantization matrices for JPEG steganography;a mesh-based robust digital watermarking technique against geometric attacks;multi-level signature based biometric authentication using watermarking;the problems of using ROC curve as the sole criterion in positive biometrics identification;secure access control to hidden data by biometric features;and a robust digital watermarking scheme by use of integral imaging technique.

关键词： image processing

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Proceedings of SPIE: mobile multimedia/image processing for military and security applications

Proceedings of SPIE: Mobile Multimedia/Image Processing for ...

引用

mobile multimedia/image processing for military and security applications

ISBN: (纸本)081946306X

The proceedings contain 25 papers. The topics discussed include: reduced memory JPEG decompression for mobile devices;an efficient real-time video compression algorithm with high feature preserving capability;an imaging toolbox for smart phone applications;performance evaluation of wavelet-based face verification on a PDA recorded database;audio-visual imposture;secure steganography designed for mobile platforms;a new JPEG-based steganographic algorithm for mobile devices;on mobile wireless ad hoc IP video transports;enhancement of node connectivity for mobile ad hoc networks;robust image transmission over MIMO space-time coded wireless systems;secure image communication for network applications;privacy enabling technology for video surveillance;a logarithmic measure of image enhancement;and content-based video indexing and searching with wavelength transformation.

关键词： image processing

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Data hiding based on Fibonacci-Haar Transform

Data hiding based on Fibonacci-Haar Transform

引用

Conference on mobile multimedia/image processing for military and security applications

作者： Battisti, F. Egiazarian, K. Carli, M. Neri, A. Univ Roma TRE Rome Italy Tampere Univ Technol Tampere Finland

ISBN: (纸本)9780819467010

In this contribution, we present a novel technique for imperceptible and robust watermarking of digital images. It is based on the host image 2-th level decomposition using the Fibonacci-Haar Transform (FHT) and on the Singular Value Decomposition (SVD) of the transformed subbands. The main contributions of this approach are the use of the FHT for hiding purposes, the flexibility in data hiding capacity, and the key-dependent secrecy of the used transform. The experimental results show the effectiveness of the proposed approach both in perceived quality of the watermarked image and in robustness against the most common attacks.

关键词： data hiding security Fibonacci transform SVD

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A chaotic cipher Mmohocc and its security analysis

A chaotic cipher Mmohocc and its security analysis

引用

Conference on mobile multimedia/image processing for military and security applications

作者： Zhang, Xiaowen Shu, Li Tang, Ke CUNY Grad Ctr CS Dept New York NY 10021 USA Sichuan Univ Sch Comp Sci Chengdu Peoples R China

ISBN: (纸本)9780819467010

In this paper we introduce a new chaotic stream cipher Mmohocc which utilizes the fundamental chaos characteristics. The designs of the major components of the cipher are given. Its cryptographic properties of period, auto- and cross-correlations, and the mixture of Markov processes and spatiotemporal effects are investigated. The cipher is resistant to the related-key-IV, Time/Memory/Data tradeoff, algebraic, and chosen-text attacks. The keystreams successfully passed two batteries of statistical tests and the encryption speed is comparable with RC4.

关键词： stream cipher security analysis chaos chaotic map and orbit

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Secure access control to hidden data by biometric features

Secure access control to hidden data by biometric features

引用

Conference on mobile multimedia/image processing for military and security applications

作者： Cancellaro, J. Carli, M. Egiazarian, K. Neri, A. Univ Roma TRE Dept Appl Elect Via Vasca Navale 84 Rome Italy Tampere Univ Technol Inst Signal Proc Tampere Finland

ISBN: (纸本)9780819467010

In this paper, a novel authentications system combining biometric cryptosystems with digital watermarking is presented. One of the main vulnerabilities of the existing data hiding systems is the public knowledge of the embedding domain. We propose the use of biometric data, minutiae fingerprint set, for generating the encryption key, needed to decompose an image in the Tree structured Haar transform. The uniqueness of the biometrics key together with other, embedded, biometric information guarantee the authentication of the user. Experimental tests show the effectiveness of the proposed system.

关键词： biometric cryptosystems data hiding Tree Structure Haar Transform security

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Impact on routers performance to classify and condition real-time interactive multimedia traffic based on its PHB

Impact on routers performance to classify and condition real...

引用

Conference on mobile multimedia/image processing for military and security applications

作者： Alsharif, Salim Al-Khatib, Mazen Tung, Ye Univ S Alabama Mobile AL 36688 USA

ISBN: (纸本)9780819467010

This paper presents a new method which enhances the quality-of-service (QoS) and hence the response time and queuing delay of real-time interactive multimedia over the Internet. A service class based on differentiated services mechanism has been developed. Evaluation of response time under different traffic conditions has been conducted via simulation. Specifically, the impact on routers performance at the boundary of a DS-enabled domain was evaluated using OPNET and the results are presented. Since audio and video traffic have different needs, priority schemes for different types of interactive multimedia traffic have been studied to provide control and predictable service, and therefore, better quality of service.

关键词： QoS DSCP traffic engineering queuing schemes performance engineering simulation OPNET type of service service level agreement PHB

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Human visual system based image enhancement

Human visual system based image enhancement

引用

Conference on mobile multimedia/image processing for military and security applications

作者： Wharton, Eric J. Panetta, Karen A. Agaian, Sos S. Tufts Univ Dept Elect & Comp Engn 161 Coll Ave Medford MA 02155 USA Univ Texas San Antonio Coll Engn San Antonio TX 78249 USA

ISBN: (纸本)9780819467010

This paper presents a method of image enhancement using an adaptive thresholding method based on the human visual system. We utilize a number of different enhancement algorithms applied selectively to the different regions of an image to achieve a better overall enhancement than applying a single technique globally. The presented method is useful for images that contain various regions of improper illumination. It is also practical for correcting shadows. This thresholding system allows various enhancement algorithms to be used on different sections of the image based on the local visual characteristics. It further allows the parameters to be tuned differently for the specific regions, giving a more visually pleasing output image. We demonstrate the algorithm and present results for several high quality images as well as lower quality images such as those captured using a cell phone camera. We then compare and contrast our method to other state-of-the-art enhancement algorithms.

关键词： human vision image enhancement performance measure logarithmic image processing

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An Imaging toolbox for smart phone applications

An Imaging toolbox for smart phone applications

引用

Conference on mobile multimedia/image processing for military and security applications

作者： Panchul, Aleksandr Bhupathiraju, Deepthi Agaian, Sos Akopian, David Univ Texas San Antonio 6900 N Loop 1604 W San Antonio TX 78249 USA

ISBN: (纸本)081946306X

The paper presents a Digital image processing toolbox for cellular phones. It is intended for users dealing with imaging algorithms and allows the processing of real images taken by the camera phones. For example, users are able to analyze the images and selected regions of interest using different transforms including Discrete Fourier, Hartley, and Cosine Transforms. One can apply different filters such as median and moving average. Simple image enhancement techniques are also included in the toolbox. A handy user interface allows a suitable browsing through the images and operators. The toolbox is designed to be expandable and more operations will be included in the future targeting military and security applications. The toolbox is implemented using Series 60 Platform SDK for Symbian (TM) OS, for C++. It allows developers to quickly and efficiently run and test applications for devices that are compatible with the Series 60 Platform. The algorithms are first implemented on Series 60 Platform device emulator on the PC and then installed on the cell phone.

关键词： smart phone applications programming for embedded systems Symbian 60 platform

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Multi-level signature based biometric authentication using watermarking

Multi-level signature based biometric authentication using w...

引用

Conference on mobile multimedia/image processing for military and security applications

作者： Maiorana, Emanuele Campisi, Patrizio Neri, Alessandro Univ Roma Tre Dip Elettr Applicata Via Vasca Navale 84 I-00146 Rome Italy

ISBN: (纸本)9780819467010

In the last decade a lot of efforts have been devoted to the development of biometrics-based authentication systems. In this paper we propose a signature-based biometric authentication system, where watermarking techniques are used to embed some dynamic signature features in a static representation of the signature itself, stored either in a centralized database or in a smartcard. The user authentication can be performed either by using some static features extracted from the acquired signature or by using both the aforementioned static features together with the dynamic features embedded in the enrollment stage. A multi-level authentication system, which is capable to provide various degree of security, is thus obtained. The proposed watermarking techniques are tailored to images with sharp edges, like a signature picture, in order to obtain a robust embedding method while keeping intact the original structure of the host signal. Experimental results show the two different levels of security which can be reached when either static features or both static and dynamic features are employed in the authentication process.

关键词： Digital watermarking Biometrics Radon Radon transform Feature extraction image segmentation Wavelets CRTs Information security Databases

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A logarithmic measure of image enhancement

A logarithmic measure of image enhancement

引用

Conference on mobile multimedia/image processing for military and security applications

作者： Wharton, Eric Agaian, Sos Panetta, Karen Tufts Univ 161 Coll Ave Medford MA 02155 USA Univ Texas San Antonio San Antonio TX 78249 USA

ISBN: (纸本)081946306X

image enhancement performance is currently judged subjectively, with no reliable manner of quantifying the results of an enhancement. Current quantitative measures rely on linear algorithms to determine contrast, leaving room for improvement. With the introduction of more complex enhancement algorithms, there is a need for an effective method of quantifying performance to select optimal parameters. In this paper, we present a logarithmic based image enhancement measure. We demonstrate its performance on real world images. The results will show the effectiveness of our measures to select optimal enhancement parameters for the enhancement algorithms.

关键词： image enhancement logarithmic image processing enhancement measure transform enhancement

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