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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51-60 订阅

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Improving the recognition of fingerprint biometric system using enhanced image fusion

Improving the recognition of fingerprint biometric system us...

引用

conference on mobile multimedia/image processing, security, and applications 2010

作者： Alsharif, Salim El-Saba, Aed Stripathi, Reshma Univ S Alabama Dept Elect & Comp Engn Mobile AL 36688 USA

ISBN: (纸本)9780819481726

Fingerprints recognition systems have been widely used by financial institutions, law enforcement, border control, visa issuing, just to mention few. Biometric identifiers can be counterfeited, but considered more reliable and secure compared to traditional ID cards or personal passwords methods. Fingerprint pattern fusion improves the performance of a fingerprint recognition system in terms of accuracy and security. This paper presents digital enhancement and fusion approaches that improve the biometric of the fingerprint recognition system. It is a two-step approach. In the first step raw fingerprint images are enhanced using high-frequency-emphasis filtering (HFEF). The second step is a simple linear fusion process between the raw images and the HFEF ones. It is shown that the proposed approach increases the verification and identification of the fingerprint biometric recognition system, where any improvement is justified using the correlation performance metrics of the matching algorithm.

关键词： Biometric system image fusion high-frequency emphasis filtering wavelet-filter joint transform correlation fingerprint verification and identification

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2D Hexagonal Quaternion Fourier Transform in Color image processing

2D Hexagonal Quaternion Fourier Transform in Color Image Pro...

引用

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

作者： Grigoryan, Artyom M. Agaian, Sos S. Univ Texas San Antonio Dept Elect & Comp Engn One UTSA Circle San Antonio TX 78249 USA

ISBN: (纸本)9781510601109

In this paper, we present a novel concept of the quaternion discrete Fourier transform on the two-dimensional hexagonal lattice, which we call the two-dimensional hexagonal quaternion discrete Fourier transform (2-D HQDFT). The concept of the right-side 2D HQDFT is described and the left-side 2-D HQDFT is similarly considered. To calculate the transform, the image on the hexagonal lattice is described in the tensor representation when the image is presented by a set of 1-D signals, or splitting-signals which can be separately processed in the frequency domain. The 2-D HQDFT can be calculated by a set of 1-D quaternion discrete Fourier transforms (QDFT) of the splitting-signals.

关键词： Discrete quaternion Fourier transform discrete Fourier transform tensor transform tensor representation hexagonal Fourier transform quaternion imaging

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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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Creating Wi-Fi Bluetooth Mesh Network for Crisis Management applications

Creating Wi-Fi Bluetooth Mesh Network for Crisis Management ...

引用

conference on mobile multimedia/image processing, security, and applications 2010

作者： Al-Tekreeti, Safa Adams, Chris Al-Jawad, Naseer Univ Buckingham Appl Comp Dept Buckingham MK181EG England

ISBN: (纸本)9780819481726

This paper proposes a wireless mesh network implementation consisting of both Wi-Fi Ad-Hoc networks as well as Bluetooth Piconet/Scatternet networks, organised in an energy and throughput efficient structure. This type of networks can be easily constructed for Crises management applications, for example in an Earthquake disaster. The motivation of this research is to form mesh network from the mass availability of WiFi and Bluetooth enabled electronic devices such as mobile phones and PC's that are normally present in most regions were major crises occurs. The target of this study is to achieve an effective solution that will enable Wi-Fi and/or Bluetooth nodes to seamlessly configure themselves to act as a bridge between their own network and that of the other network to achieve continuous routing for our proposed mesh networks.

关键词： Bluetooth Wi-Fi Mesh Network Crisis Management

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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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Consideration of techniques to mitigate the unauthorized 3D printing production of keys

Consideration of techniques to mitigate the unauthorized 3D ...

引用

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

作者： Straub, Jeremy Kerlin, Scott Univ North Dakota Dept Comp Sci 3950 Campus RdStop 9015 Grand Forks ND 58202 USA

ISBN: (纸本)9781510601109

The illicit production of 3D printed keys based on remote-sensed imagery is problematic as it allows a would-be intruder to access a secured facility without the attack attempt being as obviously detectable as conventional techniques. This paper considers the problem from multiple perspectives. First, it looks at different attack types and considers the prospective attack from a digital information perspective. Second, based on this, techniques for securing keys are considered. Third, the design of keys is considered from the perspective of making them more difficult to duplicate using visible light sensing and 3D printing. Policy and legal considerations are discussed.

关键词： unauthorized 3D printing production of keys 3d printed key replica 3d scanning security digital information imaging

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Performance study of MPLS and DS techniques to improve QoS routing for critical applications on IP networks

Performance study of MPLS and DS techniques to improve QoS r...

引用

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

作者： Alsharif, Salim Shahsavari, M. Mehdi Univ S Alabama Mobile AL 36688 USA Florida Inst Technol Melbourne FL 32901 USA

ISBN: (纸本)9780819471734

This paper aims to analyze the QoS performance of two main technology mechanisms, Multi-Protocol Label Switching (MPLS) and Differentiated Services (DS). The introduction of both mechanisms to Support throughput and delay sensitive real-time media traffic will have an impact on critical applications with respect to QoS and traffic engineering. MPLS is a traffic forwarding mechanism that allows traffic to use Multiple paths and DS is a mechanism that provides for aggregate traffic to be classified and conditioned at the edge of the network routers. The two modeled techniques and their performance will be evaluated with respect to their end-to-end delay. The QoS will be incorporated in both the MPLS and DS mechanisms while preserving the efficiencies of the backbone structure of the Internet, and also the performance is compared with the existing IP routing algorithms.

关键词： MultiProtocol Label Switching QoS DSCP traffic engineering simulation routing label switch paths service level agreement per-hob behavior

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New Methods for High Capacity Embedding in multimedia Covers using Redundant Number Systems with Adjunctive Numerical Representations

New Methods for High Capacity Embedding in Multimedia Covers...

引用

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

作者： Agaian, Sos S. Collins, James C. Univ Texas San Antonio Multimedia & Mobile Signal Proc Lab San Antonio TX USA

ISBN: (纸本)9780819490841

In this paper, we introduce a novel technique for covertly embedding data throughout an image using redundant number system decomposition over non-standard digital bit planes. It will be shown that this new steganography method has minimal visual distortive affects while also preserving both first and second order cover statistics, making it less susceptible to most general steganalysis attacks. This paper begins by reviewing the common numerical methods used in today's binary-based steganography algorithms. We then describe some the basic concepts and challenges when attempting to implement complex embedding algorithms that are based on a redundant number system. Finally, we introduce a novel class of numerical based multiple bit-plane decomposition systems, which we define as Adjunctive Numerical Representations. This new system will not only provide the statistical stability required for effective steganography but will also give us an improvement in the embedding capacity for our multimedia carrier files.

关键词： Redundant Number Systems Steganography Adjunctive Numerical Representation Fibonacci

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mobile object retrieval in server-based image databases

Mobile object retrieval in server-based image databases

引用

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

作者： Manger, D. Pagel, F. Widak, H. Fraunhofer Inst Optron Syst Technol & Image Explo D-76131 Karlsruhe Germany

ISBN: (纸本)9780819495464

The increasing number of mobile phones equipped with powerful cameras leads to huge collections of user-generated images. To utilize the information of the images on site, image retrieval systems are becoming more and more popular to search for similar objects in an own image database. As the computational performance and the memory capacity of mobile devices are constantly increasing, this search can often be performed on the device itself. This is feasible, for example, if the images are represented with global image features or if the search is done using EXIF or textual metadata. However, for larger image databases, if multiple users are meant to contribute to a growing image database or if powerful content-based image retrieval methods with local features are required, a server-based image retrieval back-end is needed. In this work, we present a content-based image retrieval system with a client server architecture working with local features. On the server side, the scalability to large image databases is addressed with the popular bag-of-word model with state-of-the-art extensions. The client end of the system focuses on a lightweight user interface presenting the most similar images of the database highlighting the visual information which is common with the query image. Additionally, new images can be added to the database making it a powerful and interactive tool for mobile content-based image retrieval.

关键词： mobile object retrieval image database

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A New Approach for Cancelable Iris Recognition

A New Approach for Cancelable Iris Recognition

引用

conference on mobile multimedia/image processing, security, and applications 2010

作者： Yang, Kai Yan, Sui Zhou, Zhi Du, Yingzi Zou, Xukai Indiana Univ Purdue Univ Dept Elect & Comp Engn Indianapolis IN 46202 USA Indiana Univ Purdue Univ Dept Comp Sci Indianapolis IN 46202 USA

ISBN: (纸本)9780819481726

The iris is a stable and reliable biometric for positive human identification. However, the traditional iris recognition scheme raises several privacy concerns. One's iris pattern is permanently bound with him and cannot be changed. Hence, once it is stolen, this biometric is lost forever as well as all the applications where this biometric is used. Thus, new methods are desirable to secure the original pattern and ensure its revocability and alternatives when compromised. In this paper, we propose a novel scheme which incorporates iris features, non-invertible transformation and data encryption to achieve "cancelability" and at the same time increases iris recognition accuracy.

关键词： cancelable biometrics iris recognition security privacy

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