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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81-90 订阅

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A New Approach for Willingness Test in Biometric Systems

A New Approach for Willingness Test in Biometric Systems

引用

conference on mobile multimedia/image processing, security, and applications 2011

作者： Yang, Kai Du, Eliza Yingzi Zhou, Zhi Indiana Univ Purdue Univ Dept Elect & Comp Engn Indianapolis IN 46202 USA

ISBN: (纸本)9780819486370

Biometrics identifies/verifies a person using his/her physiological or behavioral characteristics. It is becoming an important ally for law enforcement and homeland security. However, there are some safety and privacy concerns: biometric based systems can be accessed when users are under threat, reluctant or even unconscious states. In this paper, we introduce a new method which can identify a person and detect his/her willingness. Our experimental results show that the new approach can enhance the security by checking the consent signature while achieving very high recognition accuracy.

关键词： willingness test consent biometrics security privacy

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Ensuring security of H.264 videos by using watermarking

Ensuring security of H.264 videos by using watermarking

引用

conference on mobile multimedia/image processing, security, and applications 2011

作者： Chaumont, Marc Univ Nimes F-30000 Nimes France

ISBN: (纸本)9780819486370

Watermarking is known to be a very difficult task. Robustness, Distortion, Payload, security, Complexity are many constraints to deal with. When applied to a video stream, the difficulty seems to be growing in comparison to image watermarking. Many classical non malicious manipulations of a compressed stream may suppress the embedded information. For example, a simple re-compression of a DVD movie (MPEG2 compression) to a DivX movie will defeat most of the current state-of-the-art watermarking systems. In this talk, we will expose the different techniques in order to watermark a video compressed stream. Before, we will present the H.264/AVC standard which is one of the most powerful video-compression algorithms. The discussion about video watermarking will be illustrated with H.264 streams. The specific example of traitor tracing will be presented. Deadlocks will be discussed, and then the possible extensions and the future applications will conclude the presentation.

关键词： State of the art Tutorial Watermarking H.264 Joint watermarking and video compression security applications Traitor Tracing

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Remote Object Authentication against counterfeiting using elliptic curves

Remote Object Authentication against counterfeiting using el...

引用

conference on mobile multimedia/image processing, security, and applications 2011

作者： Lancrenon, Jean Gillard, Roland Fournel, Thierry Univ St Etienne Lab H Curien 18 Rue Prof B Lauras F-42000 St Etienne France Univ Grenoble 1 Inst Fourier F-38402 St Martin Dheres France

ISBN: (纸本)9780819486370

This paper aims to provide a remote fingerprint object authentication protocol dedicated to anti-counterfeiting applications. The corresponding security model is given. The suggested scheme is based on an Elliptic Curve Cryptography (ECC) encryption adding a mechanism to control integrity at the verification stage. The privacy constraint useful in many applications leads us to embed a Private Information Retrieval scheme in the protocol. As in a previous SPIE presentation, we begin with an optical reader. We drastically lower the amount of computation made at this stage.

关键词： authentication protocol cryptosystem security model object authentication secure traceability fingerprints remote object authentication protocol fingerprint protocol

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Multiple User Access and Testing for PreNotiS - a Fast mobile Event Reporting Solution

Multiple User Access and Testing for PreNotiS - a Fast Mobil...

引用

conference on mobile multimedia/image processing, security, and applications 2011

作者： Chan, Michael Kumar, Abhinav Akopian, David Agaian, Sos S. Univ Texas San Antonio San Antonio TX 78249 USA

ISBN: (纸本)9780819486370

The PreNotiS (preventive notification system) was proposed to address the current lack in consumer prevention and disaster informatics systems. The underscore of this letter is to propose PreNotiS as a provision of trusted proxies of information sourcing to be integral to the disaster informatics framework. To promote loose coupling among subsystems, PreNotiS has evolved into a model-view-controller (MVC) architecture via object-oriented incremental prototyping. The MVC specifies how all subsystems and how they interact with each other. A testing framework is also proposed for the PreNotiS to verify multiple concurrent user access which might be observable during disasters. The framework relies on conceptually similar self-test modules to help with serviceability.

关键词： Prevention and Disaster Informatics Incident Reporting Test Suite Function-Oriented Analysis Object-Oriented Analysis Incremental Prototyping

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Generalized Phi Number System and its applications for image Decomposition and Enhancement

Generalized Phi Number System and its Applications for Image...

引用

conference on multimedia on mobile Devices and multimedia Content Access - Algorithms and Systems V

作者： Agaian, Sarkis Zhou, Yicong Stanford Univ Dept Elect Engn Stanford CA 94305 USA Interdisciplinary Solut LLC San Antonio 78215 TX USA

ISBN: (纸本)9780819484185

Technologies and applications of the field-programmable gate array (FPGAs) and digital signal processing (DSP) require both new customizable number systems and new data formats. This paper introduces a new class of parameterized number systems, namely the generalized Phi number system (GPNS). By selecting appropriate parameters, the new system derives the traditional Phi number system, binary number system, beta encoder, and other commonly used number systems. GPNS also creates new opportunities for developing customized number systems, multimedia security systems, and image decomposition and enhancement systems. A new image enhancement algorithm is also developed by integrating the GPNS-based bit-plane decomposition with Parameterized Logarithmic image processing (PLIP) models. Simulation results are given to demonstrate the GPNS's performance.

关键词： Number system Rational number system Phi number system Parameterized Logarithmic image processing Bit-plane decomposition image enhancement

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A Fast, Efficiency-Preserving System for Simultaneous Compression & Encryption

A Fast, Efficiency-Preserving System for Simultaneous Compre...

引用

conference on mobile multimedia/image processing, security, and applications 2011

作者： Metzler, Richard E. L. Agaian, Sos S. Univ Texas San Antonio Dept Elect & Comp Engn San Antonio TX 78249 USA

ISBN: (纸本)9780819486370

Methods for embedment of stream cipher rules into compressive Elias-type entropy coders are presented. Such systems have the ability to simultaneously compress and encrypt input data;thereby providing a fast and secure means for data compression. Procedures for maintaining compressive performance are articulated with focus on further compression optimizations. Furthermore, a novel method is proposed which exploits the compression process to hide cipherstream information in the case of a known plaintext attack. Simulations were performed on images from a variety of classes in order to grade and compare the compressive and computational costs of the novel system relative to traditional compression-followed-by-encryption methods.

关键词： Compression encryption stream cipher security arithmetic coding range coding Elias coding concryption

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Secure Wavelet-Based Isometric Projection for Face Recognition

Secure Wavelet-Based Isometric Projection for Face Recogniti...

引用

conference on mobile multimedia/image processing, security, and applications 2011

作者： Al-Assam, Hisham Sellahewa, Harin Jassim, Sabah Univ Buckingham Buckingham MK18 1EG England

ISBN: (纸本)9780819486370

Biometric systems such as face recognition must address four key challenges: efficiency, robustness, accuracy and security. Isometric projection has been proposed as a robust dimension reduction technique for a number of applications, but it is computationally demanding when applied to high dimensional spaces such as the space of face images. On the other hand, wavelet transforms have shown to provide an efficient tool for facial feature representation and face recognition with significant reduction in dimension. In this paper, we propose a hybrid approach that combines the efficiency and robustness of wavelet transforms with isometric projections for face features extraction in the transformed domain to be used for recognition. We shall compare the recognition accuracy of our approach with the accuracy of other commonly used projection techniques in the wavelet domain such as PCA and LDA. The security of biometric templates is addressed by adopting a lightweight random projection technique as an add-on subsystem. The results are based on experiments conducted on a publicly available benchmark face database.

关键词： Secure face recognition wavelet transforms isometric projection biometric security random projection biometric template protection

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Rapid Prototyping of an Automated Video Surveillance System: A Hardware-Software Co-Design Approach

Rapid Prototyping of an Automated Video Surveillance System:...

引用

conference on mobile multimedia/image processing, security, and applications 2011

作者： Ngo, Hau T. Rakvic, Ryan N. Broussard, Randy P. Ives, Robert W. US Naval Acad Dept Elect & Comp Engn Annapolis MD 21402 USA US Naval Acad Weapons & Syst Engn Dept Annapolis MD 21402 USA

ISBN: (纸本)9780819486370

FPGA devices with embedded DSP and memory blocks, and high-speed interfaces are ideal for real-time video processing applications. In this work, a hardware-software co-design approach is proposed to effectively utilize FPGA features for a prototype of an automated video surveillance system. Time-critical steps of the video surveillance algorithm are designed and implemented in the FPGA's logic elements to maximize parallel processing. Other non time-critical tasks are achieved by executing a high level language program on an embedded Nios-II processor. Pre-tested and verified video and interface functions from a standard video framework are utilized to significantly reduce development and verification time. Custom and parallel processing modules are integrated into the video processing chain by Altera's Avalon Streaming video protocol. Other data control interfaces are achieved by connecting hardware controllers to a Nios-II processor using Altera's Avalon Memory Mapped protocol.

关键词： FPGA real-time image processing embedded system Nios-II processor pipeline and systolic architecture foreground segmentation

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Parallel design patterns for a low-power, software-defined compressed video encoder

Parallel design patterns for a low-power, software-defined c...

引用

conference on mobile multimedia/image processing, security, and applications 2011

作者： Bruns, Michael W. Hunt, Martin A. Prasad, Durga Gunupudi, Nageswara Rao Sonachalem, Sekar Coherent Logix Inc 1120 S Capitol TX Hwy Austin TX 78746 USA Parallel Prisms Duluth GA 30097 USA

ISBN: (纸本)9780819486370

Video compression algorithms such as H.264 offer much potential for parallel processing that is not always exploited by the technology of a particular implementation. Consumer mobile encoding devices often achieve real-time performance and low power consumption through parallel processing in Application Specific Integrated Circuit (ASIC) technology, but many other applications require a software-defined encoder. High quality compression features needed for some applications such as 10-bit sample depth or 4:2:2 chroma format often go beyond the capability of a typical consumer electronics device. An application may also need to efficiently combine compression with other functions such as noise reduction, image stabilization, real time clocks, GPS data, mission/ESD/user data or software-defined radio in a low power, field upgradable implementation. Low power, software-defined encoders may be implemented using a massively parallel memory-network processor array with 100 or more cores and distributed memory. The large number of processor elements allow the silicon device to operate more efficiently than conventional DSP or CPU technology. A dataflow programming methodology may be used to express all of the encoding processes including motion compensation, transform and quantization, and entropy coding. This is a declarative programming model in which the parallelism of the compression algorithm is expressed as a hierarchical graph of tasks with message communication. Data parallel and task parallel design patterns are supported without the need for explicit global synchronization control. An example is described of an H.264 encoder developed for a commercially available, massively parallel memory-network processor device.

关键词： memory-network processor massively parallel parallel processing dataflow H.264 low power

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Digital Information processing and Communications 2011

引用

丛书名： Communications in Computer and Information Science

2011年

作者： Vaclav Snasael Jan Platos Eyas El-Qawasmeh

ISBN: (数字)9783642223891

ISBN: (纸本)9783642223884

This two-volume-set (CCIS 188 and CCIS 189) constitutes the refereed proceedings of the International conference on Digital Information processing and Communications, ICDIPC 2011, held in Ostrava, Czech Republic, in July 2011. The 91 revised full papers of both volumes presented together with 4 invited talks were carefully reviewed and selected from 235 submissions. The papers are organized in topical sections on network security; Web applications; data mining; neural networks; distributed and parallel processing; biometrics technologies; e-learning; information ethics; image processing; information and data management; software engineering; data compression; networks; computer security; hardware and systems; multimedia; ad hoc network; artificial intelligence; signal processing; cloud computing; forensics; security; software and systems; mobile networking; and some miscellaneous topics in digital information and communications.

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