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共 179 条记录，以下是71-80 订阅

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Deep Learning on mobile Devices - A Review

Deep Learning on Mobile Devices - A Review

引用

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

作者： Deng, Yunbin BAE Syst Inc Fast Labs Burlington MA 01803 USA

ISBN: (纸本)9781510626522

Recent breakthroughs in deep learning and artificial intelligence technologies have enabled numerous mobile applications. While traditional computation paradigms rely on mobile sensing and cloud computing, deep learning implemented on mobile devices provides several advantages. These advantages include low communication bandwidth, small cloud computing resource cost, quick response time, and improved data privacy. Research and development of deep learning on mobile and embedded devices has recently attracted much attention. This paper provides a timely review of this fast-paced field to give the researcher, engineer, practitioner, and graduate student a quick grasp on the recent advancements of deep learning on mobile devices. In this paper, we discuss hardware architectures for mobile deep learning, including Field Programmable Gate Arrays (FPGA), Application Specific Integrated Circuit (ASIC), and recent mobile Graphic processing Units (GPUs). We present Size, Weight, Area and Power (SWAP) considerations and their relation to algorithm optimizations, such as quantization, pruning, compression, and approximations that simplify computation while retaining performance accuracy. We cover existing systems and give a state-of-the-industry review of TensorFlow, MXNet, mobile AI Compute Engine (MACE), and Paddle-mobile deep learning platform. We discuss resources for mobile deep learning practitioners, including tools, libraries, models, and performance benchmarks. We present applications of various mobile sensing modalities to industries, ranging from robotics, healthcare and multimedia, biometrics to autonomous drive and defense. We address the key deep learning challenges to overcome, including low quality data, and small training/adaptation data sets. In addition, the review provides numerous citations and links to existing code bases implementing various technologies. These resources lower the user's barrier to entry into the field of mobile deep learning.

关键词： Deep Learning (DL) Artificial Intelligence (AI) mobile and Embedded Devices mobile Machine Learning mobile Computing GPU

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Quaternion-based local and global color image enhancement algorithm

Quaternion-based local and global color image enhancement al...

引用

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

作者： Voronin, V. Semenishchev, E. Zelensky, A. Agaian, S. Don State Tech Univ Lab Math Methods Image Proc & Comp Vis Intelligen Rostov Na Donu Russia Moscow State Univ Technol STANKIN Moscow Russia CUNY Coll Staten Isl Dept Comp Sci New York NY USA

ISBN: (纸本)9781510626522

Many images like medical images, satellite images, and real-life photographs may suffer poor contrast degradation. image enhancement is the image processing of improving the quality that the results are more suitable for display or further image analysis. In this paper, we present the detailed model for color image enhancement using the Hamiltonian quaternion framework. We introduce a novel quaternionic frequency enhancement algorithm which can combine the color channels and the local and global image processing. The basic idea is to apply a-rooting image enhancement approach for different image blocks. For this purpose, we split image in moving windows on disjoint blocks. The parameter alfa for every block driven through optimization of measure of enhancement (EME). The resulting image is a weighted mean of all processing blocks. The weights for every local and global enhanced image driven through optimization of measure of enhancement (EME). Some presented experimental results illustrate the performance of the proposed approach on color images in comparison with the state-of-the-art methods.

关键词： Hamiltonian quaternion framework local and global processing color image enhancement the measure of enhancement

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On-line signature authentication: user adaptive template protection and renewability

On-line signature authentication: user adaptive template pro...

引用

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

作者： Maiorana, Emanuele Campisi, Patrizio Neri, Alessandro Univ Roma Tre Dip Elettron Applicata I-00146 Rome Italy

ISBN: (纸本)9780819471734

In this paper all adaptive feature-based approach to on-line signature verification is presented. Cryptographic techniques are employed to protect the extracted templates thus making impossible to derive the original biometric data from the stored information, as well as to generate multiple templates from the same original biometrics. Our approach allows to obtain, together with protection, also template cancelability thus guaranteeing user's privacy. The proposed authentication scheme is able to automatically adjust its parameters to the variability of each user's signature, thus obtaining a user adaptive system with enhanced performances with respect to a non-adaptive one. Experimental results show the effectiveness of our approach. Also the effects on the recognition performances when using the pen inclination features are investigated.

关键词： Biometrics Binary data Feature extraction Fluorescence correlation spectroscopy Reliability Computer programming Computer security Databases Tablets Data acquisition

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Assessment of heart rate variability based on mobile device for planning physical activity

Assessment of heart rate variability based on mobile device ...

引用

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

作者： Svirin, I. S. Epishina, E. V. Voronin, V. V. Semenishchev, E. A. Solodova, E. N. Nabilskaya, N. V. CJSC Nordavind Moscow Russia LLC Nordavind Dubna Dubna Russia Don State Tech Univ Dept Radioelect Syst Shakhty Russia LLC Sci Enterprise Tsezis Dubna Russia

ISBN: (纸本)9781628416138

In this paper we present a method for the functional analysis of human heart based on electrocardiography (ECG) signals. The approach using the apparatus of analytical and differential geometry and correlation and regression analysis. ECG contains information on the current condition of the cardiovascular system as well as on the pathological changes in the heart. Mathematical processing of the heart rate variability allows to obtain a great set of mathematical and statistical characteristics. These characteristics of the heart rate are used when solving research problems to study physiological changes that determine functional changes of an individual. The proposed method implemented for up-to-date mobile Android and iOS based devices.

关键词： signal processing electrocardiography 3D reconstruction correlation and regression analysis

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Face identification with frequency domain matched filtering in mobile environments

Face identification with frequency domain matched filtering ...

引用

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

作者： Lee, Dong-Su Woo, Yong-Hyun Yeom, Seokwon Kim, Shin-Hwan Daegu Univ Div Comp & Commun Engn Gyongsan 712714 Gyeongbuk South Korea

ISBN: (纸本)9780819490841

Face identification at a distance is very challenging since captured images are often degraded by blur and noise. Furthermore, the computational resources and memory are often limited in the mobile environments. Thus, it is very challenging to develop a real-time face identification system on the mobile device. This paper discusses face identification based on frequency domain matched filtering in the mobile environments. Face identification is performed by the linear or phase-only matched filter and sequential verification stages. The candidate window regions are decided by the major peaks of the linear or phase-only matched filtering outputs. The sequential stages comprise a skin-color test and an edge mask filtering test, which verify color and shape information of the candidate regions in order to remove false alarms. All algorithms are built on the mobile device using Android platform. The preliminary results show that face identification of East Asian people can be performed successfully in the mobile environments.

关键词： Face identification mobile environments matched filter phase-only skin-color edge mask

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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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image Segmentation in a Quaternion Framework for Remote Sensing applications

Image Segmentation in a Quaternion Framework for Remote Sens...

引用

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

作者： Voronin, V. Semenishchev, E. Zelensky, A. Tokareva, O. Agaian, S. Moscow State Univ Technol STANKIN Ctr Cognit Technol & Machine Vis Moscow Russia Don State Tech Univ Lab Math Methods Image Proc & Intelligent Comp Vi Rostov Na Donu Russia CUNY Dept Comp Sci New York NY 10021 USA

ISBN: (纸本)9781510635760;9781510635753

image segmentation is the critical step in imaging including applications such as video surveillance and security in controlled areas: detection and recognition of objects, their classification, analysis of crowd behavior, for identification (face recognition), for remote sensing for objects of critical infrastructure for manmade disasters and other hazards Recently several image segmentations tools have been developed. However, these tools have limitations and sometimes not aureate since the capture devices usually generate low-resolution images, which are mostly noise and blurry. The goal of this study are: (1) To map optimally images into color images to enhance their contrast and the visibility of otherwise obscured details;(2) To perform an automated segmentation analysis using modified Chan and Vese method;and (3) To study the impact of the segmentation evaluation method. Computer simulations on the thermal dataset show that the new segmentation algorithm exhibits better results compared to state-of-the-art techniques.

关键词： image segmentation image enhancement remote sensing quaternion

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Mean field game theoretic approach for security in mobile ad-hoc networks

Mean field game theoretic approach for security in mobile ad...

引用

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

作者： Wang, Yanwei Tang, Helen Yu, F. Richard Huang, Minyi Carleton Univ Dept Syst & Comp Eng Ottawa ON K1S 5B6 Canada Defence R&D Canada Ottawa Ottawa ON Canada Carleton Univ Sch Math & Stat Ottawa ON K1S 5B6 Canada

ISBN: (纸本)9780819495464

Game theory can provide a useful tool to study the security problem in mobile ad hoc networks (MANETs). Most existing work on applying game theories to security only considers two players in the security game model: an attacker and a defender. While this assumption is valid for a network with centralized administration, it may not be realistic in MANETs, where centralized administration is not available. Consequently, each individual node in a MANET should be treated separately in the security game model. In this paper, using recent advances in mean field game theory, we propose a novel game theoretic approach for security in MANETs. Mean field game theory provides a powerful mathematical tool for problems with a large number of players. Since security defence mechanisms consume precious system resources (e.g., energy), the proposed scheme considers not only the security requirement of MANETs but also the system resources. In addition, each node only needs to know its own state information and the aggregate effect of the other nodes in the MANET. Therefore, the proposed scheme is a fully distributed scheme. Simulation results are presented to illustrate the effectiveness of the proposed scheme.

关键词： Mean field game security mobile ad-hoc network (MANET)

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A scheme for protecting mobile agents based on combining obfuscated data and time checking technology

A scheme for protecting mobile agents based on combining obf...

引用

3rd International conference on Intelligent Information Hiding and multimedia Signal processing

作者： Wu, Jiehong Chang, Guiran Li, Jia Northeastern Univ Informat Sci & Engn Inst Shenyang Peoples R China

ISBN: (纸本)9780769529943

mobile agents are programs that travel autonomously through a computer network in order to perform some computation or gather information on behalf of a human user or an application. In most applications, the security of mobile agents is of the utmost importance. Obfuscation is a technique in which the mobile code producer enforces the security policy by applying a behavior transformation to the code before sending it to run on different platforms. This paper presents a protection scheme of mobile agent in network application, which combining obfuscated data and time checking technology to verify the security of node. How to obtain important data in time checking is given also. The protection scheme is tested in actual network management environment, which can effectively identify the malicious node.

关键词： mobile agents

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Taxonomy for Spatial Domain LSB Steganography Techniques

Taxonomy for Spatial Domain LSB Steganography Techniques

引用

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 78249 USA

ISBN: (纸本)9781628410570

The Least Significant Bit (LSB) embedding technique is a well-known and broadly employed method in multimedia steganography, used mainly in applications involving single bit-plane manipulations in the spatial domain [1]. The key advantages of LSB procedures are they are simple to understand, easy to implement, have high embedding capacity, and can be resistant to steganalysis attacks. Additionally, the LSB approach has spawned numerous applications and can be used as the basis of more complex techniques for multimedia data embedding. In the last several decades, hundreds of new LSB or LSB variant methods have been developed in an effort to optimize capacity while minimizing detectability, taking advantage of the overall simplicity of this method. LSB-steganalysis research has also intensified in an effort to find new or improved ways to evaluate the performance of this widely used steganographic system. This paper reviews and categorizes some of these major techniques of LSB embedding, focusing specifically on the spatial domain. Some justification for establishing and identifying promising uses of a proposed SD-LSB centric taxonomy are discussed. Specifically, we define a new taxonomy for SD-LSB embedding techniques with the goal of aiding researchers in tool classification methodologies that can lead to advances in the state-of-the-art in steganography. With a common framework to work with, researchers can begin to more concretely identify core tools and common techniques to establish common standards of practice for steganography in general. Finally, we provide a summary on some of the most common LSB embedding techniques followed by a proposed taxonomy standard for steganalysis.

关键词： Steganography Least Significant bit Spatial Domain Taxonomy Steganalysis Common Standards

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