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

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Secure Wavelet-Based Isometric Projection for Face Recognition

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

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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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Face-It-Up: a scientific app for face processing using mobile devices and machine learning APIs

Face-It-Up: a scientific app for face processing using mobil...

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

作者： Marques, Oge James, Jhanon Barcelos, Emilio Florida Atlantic Univ 777 Glades Rd Boca Raton FL 33431 USA Florida Inst Technol 150 W Univ Blvd Melbourne FL 32901 USA

ISBN: (数字)9781510618480

ISBN: (纸本)9781510618480

image processing and Computer Vision solutions have become commodities for software developers, thanks to the growing availability of Application Programming Interfaces (APIs) that encapsulate rich functionality, powered by advanced algorithms. Tech giants like Apple, Google, IBM, and Microsoft have made APIs and micro-services available in the cloud for the agile integration of machine learning and intelligent features onto everyday applications. As privacy and cyber welfare become prime concerns, special efforts have been devoted in the field of face processing and recognition. In this context, this paper provides a friendly, intuitive and fun to use mobile app that leverages the state-of-the-art APIs for face, age, gender and emotion recognition. The Face-It-Up app was implemented for the iOS platform and uses the Microsoft Cognitive Services APIs as a tool for human vision and face processing research. Experimental work on image compression, upside-down orientation, the Thatcher effect, negative inversion, high frequency, facial artifacts, caricatures and image degradation were performed to test the application. For this purpose, we used the Radboud and 10k US Adult Faces Databases. The app benefits from accessing high-resolution imagery and touch input from the smart-devices, allowing for a wide range of new experiments from the user perspective. Furthermore, our approach serves as a potential framework for new initiatives in image-based biometrics, the Internet of Things, and citizen science.

关键词： Scientific App Face Recognition Internet of Things Machine Learning Citizen Science

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Restoration of images damaged by semi-transparent water blotches using localized image enhancement

Restoration of images damaged by semi-transparent water blot...

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

作者： Greenblatt, Aaron Agaian, Sos Panetta, Karen Tufts Univ Dept Elect Engn 151 Coll Ave Medford MA 02155 USA Univ Texas San Antonio Dept Elect Engn San Antonio TX 78249 USA

ISBN: (纸本)9780819471734

Vast libraries of historic photographs are Currently degrading due to the effects of semi-transparent water blotches. Most Current restoration techniques involve heavy user interaction and are therefore too expensive to use for large quantities of images. This paper introduces the Localized Logarithmic image Restoration Algorithm, which provides an automated system to restore the water blotches found in old photographs. The Algorithm utilizes a new localized image processing framework that allows it to improve upon existing restoration methods. This framework can be used for a variety of image processing applications. In the presented application of blotch removal, new logarithmic and statistical equations are introduced and used within the localized framework to complete the restoration. As shown by intensive computer simulations, the Algorithm produces enhanced results when compared to the existing automated algorithm. Improvements include superior edge removal around the blotch, better local contrast preservation, and expanded saturation reduction capabilities. In addition to the enhanced restoration quality of the results, the Simulations are also promising with respect to computational time.

关键词： semi-transparent localized image processing restoration image forensics preservation logarithmic

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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...

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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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Automatic image cracks detection and removal on mobile devices

Automatic image cracks detection and removal on mobile devic...

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

作者： Voronin, V. Marchuk, V. Sizyakin, R. Gapon, N. Pismenskova, M. Tokareva, S. Don State Tech Univ Dept Radioelect Syst Rostov Na Donu Russia

ISBN: (纸本)9781510601109

Some of old photographs are damaged due to improper archiving (e.g. affected by direct sunlight, humidity, insects, etc.) or have a physical damage resulting on appearance of cracks, scratches on photographs, non-necessary signs, spots, dust, and so on. This paper focuses on detection and removal of cracks from digital images. The proposed method consists of the following steps: pre-processing, crack detection and image reconstruction. A pre-processing step is used to suppress a noise and small defects in images. For a crack identification we use modified local binary patterns to form a feature vectors, and a non-linear SVM for a crack recognition. The combined inpainting method using structure and texture restoration is applied at the image reconstruction step. image inpainting is the process of restoring the lost or damaged regions or modifying the image contents imperceptibly. This technique detects and removes the horizontal, vertical, diagonal cracks and other defects on complex scenes of image. We implemented proposed method on some mobile platforms for automatic image enhancement. Presented examples demonstrate the effectiveness of the algorithm in cracks detection and removal.

关键词： cracks detection texture descriptors LBP support vector machine inpainting

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SecurePhone: a mobile phone with biometric authentication and e-signature support for dealing secure transactions on the fly

SecurePhone: a mobile phone with biometric authentication an...

引用

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

作者： Ricci, R. Chollet, G. Crispino, M. V. Jassim, S. Koreman, J. Olivar-Dimas, M. Garcia-Salicetti, S. Soria-Rodriguez, P. Informat SRL Via Magazzini Gen 31 I-00154 Rome Italy ENST GET Dept TSI F-75634 Paris France Nergal srl I-00155 Rome Italy Buckingham Univ Buckingham MK18 1EG England Univ Saarland D-66041 Saarbrucken Germany Telefonica Moviles Espana SA E-28001 Madrid Spain INT GET F-91011 Evry France Atos Origin E-28037 Madrid Spain

ISBN: (纸本)081946306X

This article presents an overview of the SecurePhone project, with an account of the first results obtained. SecurePhone's primary aim is to realise a mobile phone prototype - the "SecurePhone" - in which biometrical authentication enables users to deal secure, dependable transactions over a mobile network. The SecurePhone is based on a commercial PDA-phone, supplemented with specific software modules and a customised SIM card. It integrates in a single environment a number of advanced features: access to cryptographic keys through strong multimodal biometric authentication;appending and verification of digital signatures;real-time exchange and interactive modification of (esigned) documents and voice recordings. SecurePhone's "biometric recogniser" is based on original research. A fused combination of three different biometric methods - speaker, face and handwritten signature verification - is exploited, with no need for dedicated hardware components. The adoption of non-intrusive, psychologically neutral biometric techniques is expected to mitigate rejection problems that often inhibit the social use of biometrics, and speed up the spread of e-signature technology. Successful biometric authentication grants access to SecurePhone's. built-in e-signature services through a user-friendly interface. Special emphasis is accorded to the definition of a trustworthy security chain model covering all aspects of system operation. The SecurePhone is expected to boost m-commerce and open new scenarios for in-business and m-work, by changing the way people interact and by improving trust and confidence in information technologies, often considered intimidating and difficult to use. Exploitation plans will also explore other application domains (physical and logical access control, securised mobile communications).

关键词： mobile communications multimodal biometrics biometric authentication electronic signature security encryption in-business

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Passive radiation detection using optically active CMOS sensors

Passive radiation detection using optically active CMOS sens...

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

作者： Dosiek, Luke Schalk, Patrick D. Assured Informat Secur Inc Rome NY USA

ISBN: (纸本)9780819495464

Recently, there have been a number of small-scale and hobbyist successes in employing commodity CMOS-based camera sensors for radiation detection. For example, several smartphone applications initially developed for use in areas near the Fukushima nuclear disaster are capable of detecting radiation using a cell phone camera, provided opaque tape is placed over the lens. In all current useful implementations, it is required that the sensor not be exposed to visible light. We seek to build a system that does not have this restriction. While building such a system would require sophisticated signal processing, it would nevertheless provide great benefits. In addition to fulfilling their primary function of image capture, cameras would also be able to detect unknown radiation sources even when the danger is considered to be low or non-existent. By experimentally profiling the image artifacts generated by gamma ray and beta particle impacts, algorithms are developed to identify the unique features of radiation exposure, while discarding optical interaction and thermal noise effects. Preliminary results focus on achieving this goal in a laboratory setting, without regard to integration time or computational complexity. However, future work will seek to address these additional issues.

关键词： CMOS radiation detection webcam signal processing

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The effects of malicious nodes on performance of mobile ad hoc networks

The effects of malicious nodes on performance of mobile ad h...

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mobile multimedia/image processing for military and security applications

作者： Li, Fanzhi Shi, Xiyu Jassim, Sabah Adams, Christopher Information Systems Department University of Buckingham Buckingham MK18 1EG United Kingdom CCSR University of Surrey Guildford GU2 7XH United Kingdom

ISBN: (纸本)081946306X

Wireless ad hoc networking offers convenient infrastructureless communication over the shared wireless channel. However, the nature of ad hoc networks makes them vulnerable to security attacks. Unlike their wired counterpart, infrastructureless ad hoc networks do not have a clear line of defense, their topology is dynamically changing, and every mobile node can receive messages from its neighbors and can be contacted by all other nodes in its neighborhood. This poses a great danger to network security if some nodes behave in a malicious manner. The immediate concern about the security in this type of networks is how to protect the network and the individual mobile nodes against malicious act of rogue nodes from within the network. This paper is concerned with security aspects of wireless ad hoc networks. We shall present results of simulation experiments on ad hoc network's performance in the presence of malicious nodes. We shall investigate two types of attacks and the consequences will be simulated and quantified in terms of loss of packets and other factors. The results show that network performance, in terms of successful packet delivery ratios, significantly deteriorates when malicious nodes act according to the defined misbehaving characteristics.

关键词： mobile telecommunication systems

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Privacy-aware access control for video data in intelligent surveillance systems

Privacy-aware access control for video data in intelligent s...

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

作者： Vagts, Hauke Jakoby, Andreas Fraunhofer IOSB Fraunhoferstr 1 Karlsruhe Germany Karlsruhe Inst Technol Vis & Fus Lab Karlsruhe Germany

ISBN: (纸本)9780819490841

Surveillance systems became powerful. Objects can be identified and intelligent surveillance services can generate events when a specific situation occurs. Such surveillance services can be organized in a Service Oriented Architecture (SOA) to fulfill surveillance tasks for specific purposes. Therefore the services process information on a high level, e.g., just the position of an object. Video data is still required to visualize a situation to an operator and is required as evidence in court. processing of personal related and sensitive information threatens privacy. To protect the user and to be compliant with legal requirements it must be ensured that sensitive information can only be processed for a defined propose by specific users or services. This work proposes an architecture for Access Control that enforces the separation of data between different surveillance tasks. Access controls are enforced at different levels: for the users starting the tasks, for the services within the tasks processing data stored in central store or calculated by other services and for sensor related services that extract information out of the raw data and provide them.

关键词： Surveillance security privacy Access Control

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High Capacity Embedding with Indexed Data Recovery using Adjunctive Numerical Relations in multimedia Signal Covers

High Capacity Embedding with Indexed Data Recovery using Adj...

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

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

ISBN: (纸本)9780819495464

We introduce a technique for covertly embedding data throughout an audio file using redundant number system decomposition across non-standard digital bit-lines. This bit-line implementation integrates an index recoverable embedded algorithm with an extended bit level representation that achieves a high capacity data channel within an audio multimedia file. It will be shown this new steganography method has minimal aural distortive affects while preserving both first and second order cover statistics, making it less susceptible to most steganalysis attacks. Our research approach involves reviewing the common numerical methods used in common binary-based algorithms. We then describe basic concepts and challenges when attempting to implement complex embedding algorithms that are based on redundant number systems. Finally, we introduce a novel class of numerical based multiple bit-line decomposition systems, which we define as Adjunctive Numerical Representations. The system is primarily described using basic PCM techniques in uncompressed audio files however extended applications for alternate multimedia is addressed. This new embedding system will not only provide the statistical stability required for effective steganography but will also give us an improvement in the embedding capacity in this class of multimedia carrier files. This novelty of our approach is demonstrated by an ability to embed high capacity covert data while simultaneously providing a means for rapid, indexed data recovery.

关键词： Binary data multimedia Steganography Data communications Telecommunications Steganalysis Computing systems Information security Distortion Embedded systems

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