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

共 179 条记录，以下是1-10 订阅

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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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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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A logarithmic measure of image enhancement

A logarithmic measure of image enhancement

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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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An Imaging toolbox for smart phone applications

An Imaging toolbox for smart phone applications

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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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Data hiding based on Fibonacci-Haar Transform

Data hiding based on Fibonacci-Haar Transform

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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

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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

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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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Secure image communication for network applications

Secure image communication for network applications

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

作者： Lian, Shiguo Liu, Zhongxuan Wang, Jinwei Ren, Zhen Wang, Haila France Telecom Res & Dev Beijing Beijing 100080 Peoples R China Nanjing Univ Sci & Technol Dept Automat Nanjing PR-210094 Peoples R China

ISBN: (纸本)081946306X

A secure image transmission scheme based on JPEG2000 codec is proposed in this paper, which combines encryption with encoding and is suitable for real-time applications. In this scheme, the sensitive data are self-authenticated, then partial-encrypted during compression process, and the compressed data are encrypted by the lightweight encryption algorithm combined with error-correction codec. The self-authentication process can detect malicious tampering or transmission errors. The encryption process obtains suitable tradeoff between security and time-efficiency through encrypting data adaptively, and keeps the original system's error-robustness. The decryption process is symmetric to the encryption process. Experimental results show that this scheme obtains high perception security and time efficiency, and is thus suitable for secure image transmission over network.

关键词： watermarking image encryption image authentication digital right management

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Multiple masks based pixel comparison steganalysis method for mobile Imaging

Multiple masks based pixel comparison steganalysis method fo...

引用

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

作者： Agaian, Sos S. Peterson, Gilbert L. Rodriguez, Benjamin M. Univ Texas Dept Elect & Comp Engn Multimedia & Mobile Signal Proc Lab San Antonio TX 78285 USA Grad Sch Engn & Management Air Force Inst Technol Dept Elect & Comp Engn Wright Patterson AFB OH 45433 USA

ISBN: (纸本)081946306X

Steganalysis has many challenges;which include the accurate and efficient detection of hidden content within digital images. This paper focuses on the development of a new multi pixel comparison method used for the detection of steganographic content within digital images transmitted over mobile channels. The sensitivity of detecting hidden information within a digital image can be increased or decreased to determine if slight changes have been made to the digital image for the target of blind steganalysis. The key thought of the presented method is to increase the sensitivity of features when alterations are made within the bit planes of a digital image. The differences between the new method and existing pixel comparison methods are;multiple masks of different sizes are used to increase the sensitivity and weighted features are used to improve the classification of the feature sets. Weights are also used with the various pixel comparisons to ensure proper sensitivity when detecting small changes. The article also investigates the reliability of detection and estimation length of hidden data within wireless digital images with potential for military applications emphasizing on defense and security.

关键词： steganography steganalysis feature selection support vector machine classifier mobile imaging

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