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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41-50 订阅

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Log-polar based framework for mobile vehicle tracking with road follower

Log-polar based framework for mobile vehicle tracking with r...

引用

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

作者： Melnyk, Pavlo B. Messner, Richard A. Univ New Hampshire ECE Dept 33 Coll Rd Durham NH 03824 USA

ISBN: (纸本)9780819467010

A new computationally efficient framework for vehicle tracking on a mobile platform is proposed. The principal component of the framework is the log-polar transformation applied to video frames captured from a standard uniformly sampled format camera. The log-polar transformation provides two major benefits to real-time vehicle tracking from a mobile vehicle platform moving along a single or multi-lane road. First, it significantly reduces the amount of data required to be processed since it collapses the original Cartesian video frames into log-polar images with much smaller dimensions. Second, the log-polar transformation is capable of mitigating perspective distortion due to its scale invariance property. This second aspect is of interest for vehicle tracking because the target vehicle appearance is preserved for all distances from the observer (camera). This works however only if the center of log-polar transformation is coincident with the vanishing point of perspective view. Therefore, a road following algorithm is proposed to keep the center of log-polar transform on the vanishing point at every video frame compensating for the carrying vehicle movements. Since the algorithm is intended to be used in the mobile embedded devices, it is developed to achieve both mathematical simplicity and algorithmic efficiency while avoiding computationally expensive mathematical functions. The use of trigonometric and exponential functions is minimized comparing to the log-Hough transform traditionally used in log-polar space. This new algorithm focuses on straight radial line fragments, thus shifting its mathematical engine to the linear equations' domain.

关键词： log-polar vehicle tracking computer vision

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An Edge Detector based Integrated Database Framework for security applications

An Edge Detector based Integrated Database Framework for Sec...

引用

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

作者： Veeraraghavan, Sampathkumar Panetta, Karen Agaian, Sos Tufts Univ Dept Elect & Comp Engn Medford MA 02155 USA

ISBN: (纸本)9780819481726

In this paper, an integrated framework comprising of computer vision algorithms, Database system and Batch processing techniques has been developed to facilitate effective automatic threat recognition and detection for security applications. The proposed approach is used for automatic threat detection. The novel features of this structure include utilizing the Human Visual System model for segmentation, and a new ratio based edge detection algorithm that includes a new adaptive hysteresis thresholding method. The feature vectors of the baseline images are generated and stored in a relational database system using a batch window. The batch window is a special process where image processing tasks with similar needs are grouped together and effectively processed to save computing and memory requirements. The feature vectors of the segmented objects are generated using the CED method and are classified using a support vector machine (SVM) based classifier to identify threat objects. The experimental results demonstrate the presented framework efficiency in reducing the classification time and provide accurate detection.

关键词： Integrated Framework Automatic Threat detection Human Visual based segmentation Ratio edge detection Database-Batch coupled framework

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security Solution against Denial of Service Attacks in BESIP System

Security Solution against Denial of Service Attacks in BESIP...

引用

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

作者： Rezac, Filip Voznak, Miroslav Safarik, Jakub Partila, Pavol Tomala, Karel Tech Univ Ostrava VSB Ostrava 70833 Czech Republic

ISBN: (纸本)9780819495464

This article deals about embedded SIP communication server with an easy integration into the computer network based on open source solutions and its effective defense against the most frequent attack in the present - Denial of Service. The article contains brief introduction into the Bright Embedded Solution for IP Telephony - BESIP and describes the most common types of DoS attacks, which are applied on SIP elements of the VoIP infrastructure including the results of defensive mechanism that has been designed.

关键词： BESIP SIP IP telephony DoS IPS security embedded solution

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A practical overview and comparison of certain commercial forensic software tools for processing large-scale digital investigations

A practical overview and comparison of certain commercial fo...

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

作者： Kroeger, Knut Creutzburg, Reiner Brandenburg Univ Appl Sci Dept Informat & Media D-14737 Brandenburg Germany

ISBN: (纸本)9780819495464

The aim of this paper is to show the usefulness of modern forensic software tools for processing large-scale digital investigations. In particular, we focus on the new version of Nuix 4.2 and compare it with AccessData FTK 4.2, X-Ways Forensics 16.9 and Guidance Encase Forensic 7 regarding its performance, functionality, usability and capability. We will show how these software tools work with large forensic images and how capable they are in examining complex and big data scenarios.

关键词： IT forensics large-scale digital investigation NUIX AccessData FTK X-Ways Forensics and Guidance Encase Forensic

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A mobile System for Skin Cancer Diagnosis and Monitoring

A Mobile System for Skin Cancer Diagnosis and Monitoring

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

作者： Gu, Yanliang Tang, Jinshan Michigan Technol Univ Sch Technol Houghton MI 49931 USA

ISBN: (纸本)9781628410570

In this paper, we propose a mobile system for aiding doctors in skin cancer diagnosis and other persons in skin cancer monitoring. The basic idea is to use image retrieval techniques to help the users to find the similar skin cancer cases stored in a database by using smart phones. The query image can be taken by a smart phone from a patient or can be uploaded from other resources. The shapes of the skin lesions are used for matching two skin lesions, which are segmented from skin images using the skin lesion extraction method developed in 1. The features used in the proposed system are obtained by Fourier descriptor. A prototype application has been developed and can be installed in an iPhone. In this application, the iPhone users can use the iPhone as a diagnosis tool to find the potential skin lesions in a persons' skin and compare the skin lesions detected by the iPhone with the skin lesions stored in a database in a remote server.

关键词： mobile system skin cancer image retrieval Fourier descriptor shape matching

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Cell Phones as Imaging Sensors

Cell Phones as Imaging Sensors

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

作者： Bhatti, Nina Baker, Harlyn Marguier, Joanna Berclaz, Jerome Suesstrunk, Sabine Hewlett Packard Labs 1501 Page Mill Dr Palo Alto CA 94304 USA Ecole Polytech Fed Lausanne Sch Comp & Commun Sci IC Lausanne Switzerland

ISBN: (纸本)9780819481726

Camera phones are ubiquitous, and consumers have been adopting them faster than any other technology in modern history. When connected to a network, though, they are capable of more than just picture taking: Suddenly, they gain access to the power of the cloud. We exploit this capability by providing a series of image-based personal advisory services. These are designed to work with any handset over any cellular carrier using commonly available multimedia Messaging Service (MMS) and Short Message Service (SMS) features. Targeted at the unsophisticated consumer, these applications must be quick and easy to use, not requiring download capabilities or preplanning. Thus, all application processing occurs in the back-end system (i.e., as a cloud service) and not on the handset itself. Presenting an image to an advisory service in the cloud, a user receives information that can be acted upon immediately. Two of our examples involve color assessment - selecting cosmetics and home decor paint palettes;the third provides the ability to extract text from a scene. In the case of the color imaging applications, we have shown that our service rivals the advice quality of experts. The result of this capability is a new paradigm for mobile interactions - image-based information services exploiting the ubiquity of camera phones.

关键词： image processing and Computer Vision applications and Expert Systems Recommendation systems mobile based image services Cloud computing

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A novel method of testing image randomness with applications to image shuffling and encryption

A novel method of testing image randomness with applications...

引用

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

作者： Wu, Yue Agaian, Sos Noonan, Joseph P. Tufts Univ 161 Coll Ave Medford MA 02155 USA Univ Texas San Antonio San Antonio 78149 TX USA

ISBN: (纸本)9780819495464

This paper discusses the problem of testing the degree of randomness within an image, particularly for a shuffled or encrypted image. Its key contributions are: 1) a mathematical model of perfectly shuffled images;2) the derivation of the theoretical distribution of pixel differences;3) new hypothesis tests based approach to differentiate whether or not a test image is perfectly shuffled;and 4) a randomized algorithm to unbiasedly evaluate the degree of image randomness. Simulation results show that the proposed method is robust and effective in evaluating the degree of image randomness, and may often be more suitable for image applications than commonly used testing schemes designed for binary data like NIST 800-22 test suites. The developed method may be also useful as a first step to determine whether or not an image shuffling or encryption scheme is suitable for a particular cryptographic application.

关键词： Randomness Measure Randomness Tests image Encryption image Shuffling

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eBiometrics: an enhanced multi-biometrics authentication technique for real-time remote applications on mobile devices

eBiometrics: an enhanced multi-biometrics authentication tec...

引用

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

作者： Kuseler, Torben Lami, Ihsan Jassim, Sabah Sellahewa, Harin Univ Buckingham Dept Appl Comp Buckingham MK18 1EG England

ISBN: (纸本)9780819481726

The use of mobile communication devices with advance sensors is growing rapidly. These sensors are enabling functions such as image capture, Location applications, and Biometric authentication such as Fingerprint verification and Face & Handwritten signature recognition. Such ubiquitous devices are essential tools in today's global economic activities enabling anywhere-anytime financial and business transactions. Cryptographic functions and biometric-based authentication can enhance the security and confidentiality of mobile transactions. Using Biometric template security techniques in real-time biometric-based authentication are key factors for successful identity verification solutions, but are venerable to determined attacks by both fraudulent software and hardware. The EU-funded SecurePhone project has designed and implemented a multimodal biometric user authentication system on a prototype mobile communication device. However, various implementations of this project have resulted in long verification times or reduced accuracy and/or security. This paper proposes to use built-in-self-test techniques to ensure no tampering has taken place on the verification process prior to performing the actual biometric authentication. These techniques utilises the user personal identification number as a seed to generate a unique signature. This signature is then used to test the integrity of the verification process. Also, this study proposes the use of a combination of biometric modalities to provide application specific authentication in a secure environment, thus achieving optimum security level with effective processing time. I. e. to ensure that the necessary authentication steps and algorithms running on the mobile device application processor can not be undermined or modified by an imposter to get unauthorized access to the secure system.

关键词： Biometrics mobile devices face recognition verification security

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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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Data security and Privacy in the Cloud

Data Security and Privacy in the Cloud

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

作者： di Vimercati, Sabrina De Capitani Foresti, Sara Livraga, Giovanni Samarati, Pierangela Univ Milan Dipartimento Informat Milan Italy

ISBN: (纸本)9781510626522

Relying on the cloud for storing data and performing computations has become a popular solution in today's society, which demands large data collections and/or analysis over them to be readily available, for example, to make knowledge-based decisions. While bringing undeniable benefits to both data owners and end users accessing the outsourced data, moving to the cloud raises a number of issues, ranging from choosing the most suitable cloud provider for outsourcing to effectively protecting data and computation results. In this paper, we discuss the main issues related to data protection arising when data and/or computations over them are moved to the cloud. We also illustrate possible solutions and approaches for addressing such issues.

关键词： Data security privacy cloud computing emerging scenarios

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