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Saliency Preserved Image Fusion Using Nonsubsampled Contourlet Transform

Saliency Preserved Image Fusion Using Nonsubsampled Contourl...

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2013年中国智能自动化学术会议

作者： Liang Xu Junping Du Qingping Li JangMyung Lee Beijing Key Laboratory of Intelligent Telecommunication Software and Multimedia School of Computer ScienceBeijing University of Posts and Telecommunications Department of Electronics Engineering Pusan National University

The visual attention model inspired by the early primate visual system is a very important tool in image *** on the visual attention model, the paper proposes a novel saliency preserved image fusion algorithm with a nonsubsampled contourlet transform(NSCT).The basic idea is that the visual saliency map is first built on the coefficients of the NSCT using the visual attention model,and then is combined with the coefficients of the NSCT to form the activity level which is employed to select the final fused *** algorithm can transform successfully the visual sensitive information from source images into the fused image which contains abundant detailed contents and preserves effectively the saliency structure while enhances the image *** demonstrate that the proposed algorithm yields the encouraging results.

关键词： Saliency map Nonsubsampled contourlet transform Image fusion

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Energy-aware and self-adaptive anomaly detection scheme based on network tomography in mobile ad hoc networks

Energy-aware and self-adaptive anomaly detection scheme base...

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作者： Wang, Wei Wang, Huiran Wang, Beizhan Wang, Yaping Wang, Jiajun School of Computer Science Xi'An Polytechnic University Xi'an 710048 China Key Laboratory for Intelligent Network and Network Security Xi'An Jiaotong University Ministry of Education Xi'an 710049 China School of Software Xiamen University Xiamen 361005 China Department of Industrial and Systems Engineering Texas AandM University TX 77843 United States

Anomaly detection is indispensable for satisfying security services in mobile ad hoc network (MANET) applications. Often, however, a highly secure mechanism consumes a large amount of network resources, resulting in network performance degradation. To shift intrusion detection from existing security-centric design approaches to network performance centric design schemes, this paper presents a framework for designing an energy-aware and self-adaptive anomaly detection scheme for resource constrained MANETs. The scheme uses network tomography, a new technique for studying internal link performance based solely on end-to-end measurements. With the support of a module comprising a novel spatial-time model to identify the MANET topology, an energy-aware algorithm to sponsor system service, a method based on the expectation maximum to infer delay distribution, and a Self-organizing Map (SOM) neural network solution to profile link activity, the proposed system is capable of detecting link anomalies and localizing malicious nodes. Consequently, the proposed scheme offers a trade-off between overall network security and network performance, without causing any heavy network overload. Moreover, it provides an additional approach to monitor the spatial-time behavior of MANETs, including network topology, link performance and network security. The effectiveness of the proposed schemes is verified through extensive experiments. © 2012 Elsevier Inc. All rights reserved.

关键词： Mobile ad hoc networks

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Toward a Hybrid Approach to Generate software Product Line Portfolios

Toward a Hybrid Approach to Generate Software Product Line P...

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IEEE Congress on Evolutionary Computation

作者： Jonathas Cruz Pedro Santos Neto Ricardo Britto Ricardo Rabelo Werney Ayala Thiago Soares Mauricio Mota Software Engineering and Industrial Informatics (EASII) Computer Science Department (DC) Federal University of Piaui (UFPI) LABoratory of Intelligent Robotics Automation and Systems (LABIRAS) State University of Piaui (UESPI)

ISBN: (纸本)9781479904532

software Product Line (SPL) development is a new approach to software engineering that aims at the development of a whole range of products. One of the problems which hinders the adoption of that approach is related with the management of the products of the line. Additionally, the scope of a software product line is determined by the bounds of the capabilities provided by the collection of products in the product line. This introduces new challenges related to the scope problem. One of the main three different forms of scoping is the Product Portfolio Scoping (PPS). PPS aims at defining the products that should be developed as well as their key features. While this has an impact on the actual reuse opportunities, it is usually driven from marketing aspects. Defining a product portfolio by considering costumers satisfaction and cost aspects is a NP-hard problem. This work presents a hybrid approach, which combines fuzzy inference systems and the multi-objective metaheuristics NSGA-II to support product management by generating portfolios of products, based in segments of users and the development cost of the assets of the SPL. Fuzzy inference systems are used to generate development cost of an asset by using coupling, number of code lines and cyclomatic complexity and also to estimate the quality of the products generated by the optimization module of our approach. The NSGA-II metaheuristic is used to search for products minimizing the cost and maximizing the relevance of the candidate products. The results show that the proposed approach is effective in proposing the best products in terms of relevance and cost of the assets.

关键词： Portfolios Correlation Fuzzy logic Indexes Optimization Couplings Complexity theory

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TriggerCas: Enabling wireless consrucive collisions

TriggerCas: Enabling wireless consrucive collisions

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IEEE Annual Joint Conference: INFOCOM, IEEE computer and Communications Societies

作者： Yin Wang Yuan He Dapeng Cheng Yunhao Liu Xiang-yang Li MOE Key Laboratory for Information System Security School of Software TNLIST Tsinghua University China Department of Computer Science and Engineering Hong Kong University of Science and Technology Hong Kong China Key Laboratory of Intelligent Information Processing Universities of Shandong China Department of Computer Science Illinois Institute of Technology USA

Constructive Interference (CI) proposed in the existing work (e.g., A-MAC [1], Glossy [2]) may degrade the packet reception performance in terms of Packet Reception Ratio (PRR) and Received Signal Strength Indication (RSSI). The packet reception performance of a set of nodes transmitting simultaneously might be no better than that of any single node transmitting individually. In this paper, we redefine CI and propose TriggerCast, a practical wireless architecture which ensures concurrent transmissions of an identical packet to interfere constructively rather than to interfere non-destructively. CI potentially allows orders of magnitude reductions in energy consumption and improvements in link quality. Moreover, we for the first time present a theoretical sufficient condition for generating CI with IEEE 802.15.4 radio: concurrent transmissions with an identical packet should be synchronized at chip level. Meanwhile, co-senders participating in concurrent transmissions should be carefully selected, and the starting instants for the concurrent transmissions should be aligned. Based on the sufficient condition, we propose practical techniques to effectively compensate propagation and radio processing delays. TriggerCast has 95 th percentile synchronization errors of at most 250ns. Extensive experiments in practical testbeds reveal that TriggerCast significantly improves PRR (from 5% to 70% with 7 concurrent senders, from 50% to 98.3% with 6 senders) and RSSI (about 6dB with 5 senders).

关键词： Delays Synchronization Signal to noise ratio Receivers Wireless sensor networks IEEE 802.15 Standards

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H_∞ filtering with Diagonal Interacting Multiple Model Algorithm for Maneuvering Target Tracking

H_∞ filtering with Diagonal Interacting Multiple Model Algo...

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American Control Conference

作者： X. Fu Y. Jia J. Du J. Zhang W. Li X. Liu Seventh Research Division and the Department of Systems and Control Beihang University (BUAA) Beijing Key Laboratory of Intelligent Telecommunication Software and Multimedia School of Computer Science and Technology Beijing University of Posts and Telecommunication school of Electronic and Information Engineering Beihang University (BUAA) Department of Automatic Beijing Information and Science of University

ISBN: (纸本)9781479901777

This paper is devoted to the problem of state estimate of discrete-time stochastic systems with Markov jump parameters. A robust algorithm-diagonal interacting multiple model algorithm based on H_∞ filtering (DIMMH) is presented for maneuvering target tracking when measurement noise is of unknown statistics. Extensive Monte Carlo simulations show the effectiveness and superiority of the proposed algorithm.

关键词： Maneuvering Target Tracking Markov jump parameters effectiveness Target tracking maneuvering target State estimation Filtration tracking Noise measurement Diagonal Monte Carlo technique

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PHD filter for multi-target tracking by variational Bayesian approximation

PHD filter for multi-target tracking by variational Bayesian...

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IEEE Annual Conference on Decision and Control

作者： Wenling Li Yingmin Jia Junping Du Jun Zhang Seventh Research Division and the Department of Systems and Control Beihang University (BUAA) Beijing 100191 China Beijing Key Laboratory of Intelligent Telecommunications Software and Multimedia School of Computer Science and Technology Beijing University of Posts and Telecommunications Beijing 100876 China School of Electronic and Information Engineering Beihang University (BUAA) Beijing 100191 China

ISBN: (纸本)9781467357159

In this paper, we address the problem of multitarget tracking with unknown measurement noise variance parameters by the probability hypothesis density (PHD) filter. Based on the concept of conjugate prior distributions for noise statistics, the inverse-Gamma distributions are employed to describe the dynamics of the noise variance parameters and a novel implementation to the PHD recursion is developed by representing the predicted and the posterior intensities as mixtures of Gaussian-inverse-Gamma terms. As the target state and the noise variance parameters are coupled in the likelihood functions, the variational Bayesian approximation approach is applied so that the posterior is derived in the same form as the prior and the resulting algorithm is recursive. A numerical example is provided to illustrate the effectiveness of the proposed filter.

关键词： Nickel

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Visual attention patterns during program debugging with an IDE 12

Visual attention patterns during program debugging with an I...

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7th Eye Tracking Research and Applications Symposium, ETRA 2012

作者： Hejmady, Prateek Narayanan, N. Hari Intelligent and Interactive Systems Laboratory Computer Science and Software Engineering Department Auburn University Auburn AL 36849 United States

ISBN: (纸本)9781450312257

Integrated Development Environments (IDE) generate multiple graphical and textual representations of programs. Co-ordination of these representations during program comprehension and debugging can be a complex task. In order to better understand the role and effectiveness of multiple representations, we conducted an empirical study of Java program debugging with a professional, multi-representation IDE. We found that program code and dynamic representations (dynamic viewer, variable watch and output) attracted the most attention of programmers. Static representations like Unified Modeling Language (UML) Diagrams and Control Structure Diagrams (CSD) saw significantly lesser usage. We analyzed gaze patterns by segmenting the debugging sessions into three, five and fifteen minute intervals, and classifying gazes into short and long gazes. Novel data mining techniques were used to detect high frequency patterns from eye tracking data. Visual pattern differences were found among participants based on their programming experience, familiarity with the IDE and debugging performance. © 2012 ACM.

关键词： Eye tracking

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Finite-time consensus control for multiple manipulators with unmodeled dynamics

Finite-time consensus control for multiple manipulators with...

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American Control Conference

作者： Bin Zhang Yingmin Jia Junping Du Jun Zhang Seventh Research Division and the Department of Systems and Control Beihang University (BUAA) Beijing 100191 China Beijing Key Laboratory of Intelligent Telecommunications Software and Multimedia School of Computer Science and Technology Beijing University of Posts and Telecommunications Beijing 100876 China School of Electronic and Information Engineering Beihang University (BUAA) Beijing 100191 China

ISBN: (纸本)9781479901777

This paper is devoted to the finite-time control problem for multiple manipulators, where unmodeled dynamics is taken into consideration. An effective coordinated control strategy is introduced, under which distributed protocols with continuous feedbacks are proposed. By applying the homogeneous theory for stability analysis, it is proven that the multi-robot system can be globally finite-time stabilized through our protocols. Numerical simulations on four manipulators with two degrees of freedom are presented to validate the effectiveness of the control strategy.

关键词： unmodeled dynamics control strategy Manipulators two degrees of freedom multi-robot systems Stability analysis distributed protocol

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State estimation for jump Markov linear systems with uncompensated biases

State estimation for jump Markov linear systems with uncompe...

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American Control Conference

作者： Wenling Li Yingmin Jia Junping Du Jun Zhang Deyuan Meng Seventh Research Division and the Department of Systems and Control Beihang University (BUAA) Beijing 100191 China. Beijing Key Laboratory of Intelligent Telecommunications Software and Multimedia School of Computer Science and Technology Beijing University of Posts and Telecommunications Beijing 100876 China School of Electronic and Information Engineering Beihang University (BUAA) Beijing 100191 China

ISBN: (纸本)9781479901777

This paper studies the problem of state estimation for jump Markov linear systems with uncompensated biases. By describing the state and the measurement biases as additive random variables, a suboptimal filter has been developed by applying the basic interacting multiple model (IMM) approach. To derive a precise representation of the biases contributions to the state estimation, three auxiliary matrices are introduced with respect to the correlation between the state estimation errors and the biases, which helps to derive mode-conditioned estimates in the framework of the IMM. A numerical example involving tracking a maneuvering target is provided to compare the performance of the proposed filter with that of the augmented state filter.

关键词： Jump Markov linear system Interacting multiple model Uncompensated bias State estimation Bias uncompensated maneuvering target Linear system interacting boson model Markov jump IMM

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Innovative instruction, assessment & evaluation in programming language concepts 2012

Innovative instruction, assessment & evaluation in programmi...

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2012 IEEE International Conference on Information science and Technology, ICIST 2012

作者： Powers, David M. W. Department of Computer Science School of Computer Science Engineering and Mathematics Flinders University Australia Beijing Municipal Key Laboratory for Multimedia and Intelligent Software Technology Beijing University of Technology China

ISBN: (纸本)9781457703454

This paper describes the development of a course in Programming Concepts over a period of a decade. Initially we present educational principles that underlie the approach, as well as specific and generic aims for this course. We then proceed to show how an integrated program of assessment and instruction has allowed teaching and comparison of multiple programming paradigms and concepts within a common framework. The specifiation of specific and generic skills and the extents to which they are expected to be covered has been closely validated with surveys framed around them. We also address some general issues in modern education. © 2012 IEEE.

关键词： Teaching

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