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Salient region detection and segmentation for general object recognition and image understanding

2007 8th International Conference on Electronic Measurement & Instruments（ICEMI’2007）

作者： Qiu Daqiang Hu Bing Li Dandan (school of electrical and information engineering Xihua university chengdu 610039 china)

＜正＞To solve the problem of large capacity and high speed storage requirement in PCI high-speed data acquisition system（HDAS）,a scheme of utilizing FPGA to realize the timing-logical control for the Synchronous DRAM（SDRAM）, which is used as a data memory,is *** analyzing the structural features of the SDRAM,the idea of design for SDRAM controller with Verilog HDL is given in *** the mean time,the FIFO technique is especially employed to solve the problem that SDRAM accessed by computer through PCI ***,the correctness of the design is proved by the corresponding timing simulation.

关键词： High-speed Data Acquisition PCI Bus FPGA SDRAM Controller State Machine

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Science china(information Sciences) 2011年第12期54卷 2481-2490页

作者： HUANG TieJun 1 , TIAN YongHong 1 , LI Jia 2 & YU HaoNan 11 National engineering Laboratory for Video Technology, school of electrical engineering and Computer Science, Peking university, Beijing 100871, china 2 Key Laboratory of Intelligent information Processing, Institute of Computing Technology, Chinese Academy of Sciences, Beijing 100190, china National engineering Laboratory for Video Technology School of Electrical Engineering and Computer Science Peking University Beijing China Key Laboratory of Intelligent information Processing Institute of Computing Technology Chinese Academy of Sciences Beijing China

General object recognition and image understanding is recognized as a dramatic goal for computer vision and multimedia retrieval. In spite of the great efforts devoted in the last two decades, it still remains an open problem. In this paper, we propose a selective attention-driven model for general image understanding, named GORIUM (general object recognition and image understanding model). The key idea of our model is to discover recurring visual objects by selective attention modeling and pairwise local invariant features matching on a large image set in an unsupervised manner. Towards this end, it can be formulated as a four-layer bottom-up model, i.e., salient region detection, object segmentation, automatic object discovering and visual dictionary construction. By exploiting multi-task learning methods to model visual saliency simultaneously with the bottom-up and top-down factors, the lowest layer can effectively detect salient objects in an image. The second layer exploits a simple yet effective learning approach to generate two complementary maps from several raw saliency maps, which then can be utilized to segment the salient objects precisely from a complex scene. For the third layer, we have also implemented an unsupervised approach to automatically discover general objects from large image set by pairwise matching with local invariant features. Afterwards, visual dictionary construction can be implemented by using many state-of-the-art algorithms and tools available nowadays.

关键词： object recognition image understanding visual saliency salient object segmentation visual dictionary

有限波长转换能力光突发交换网络动态波长分配机制

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上海交通大学学报 2009年第3期43卷 355-360页

作者：许毅范戈上海交通大学电子信息与电气工程学院上海200240

为了解决下一代可商用化的有限波长转换能力光突发交换(OBS-LWCC)网中突发包资源竞争问题,根据波长转换器所在的位置分布,将整个网络解构为多个波长连续性子段.基于分解后的网络模型,对各种波长分配算法的突发阻塞性能进行分析和综合比... 详细信息

为了解决下一代可商用化的有限波长转换能力光突发交换(OBS-LWCC)网中突发包资源竞争问题,根据波长转换器所在的位置分布,将整个网络解构为多个波长连续性子段.基于分解后的网络模型,对各种波长分配算法的突发阻塞性能进行分析和综合比较,采用传统优先级计算与子段模型结构相结合的方法,提出一种新的分布式动态波长分配策略PWA-leg.仿真实验表明,在OBS-LWCC网络结构中关键的波长可转换节点处,该算法实现了突发业务最佳承载波长(信道)的智能选择,与传统波长分配算法相比,具有更低的全网突发包阻塞率,能够更好地适应动态突发包业务和网络拓扑的变化.

关键词：光突发交换波长转换波长连续性限制突发竞争波长分配

Tunneling conductance in graphene ferromagnet/p wave superconductor junctions

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Science china(Physics,Mechanics & Astronomy) 2012年第4期Mechanics & Astronomy) .卷 649-653页

作者： LI XiaoWei 1,2*,CHEN HuaBao 1 & LIU ShuJing 1 1 school of Physics and Electronic electrical engineering,Huaiyin Normal university,Huaian 223300,china 2 State Key Laboratory of Functional Materials for Informatics,Shanghai Institute of Microsystem and information Technology,Chinese Academy of Sciences,Shanghai 200050,china school of Physics and Electronic electrical engineering Huaiyin Normal University Huaian China State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai China

Using the extended Blonder-Tinkham-Klapwijk formalism,we investigate the conductance spectra of graphene ferromagnet/p wave superconductor *** is found that the conductance spectra are affected by the p wave pairing *** ferromagnetic exchange energy in the ferromagnet can suppress Andreev retroreflection but enhance the specular Andreev reflection in graphene ferromagnet/p wave superconductor *** conductance decreases with increasing exchange energy Eh for EhEF.

关键词： graphene ferromagnet p wave superconductor tunneling conductance

基于变精度粗糙集的多属性群决策信息系统安全评估

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上海交通大学学报 2009年第7期43卷 1161-1166页

作者：赵亮薛质上海交通大学电子信息与电气工程学院上海200240

为了获取信息系统安全状况并制定相应的安全解决方案,提出了基于变精度粗糙集(VPRS)的多属性群决策安全评估方法.以某高校校园网络系统作为评估样本,在信息系统安全评估模型的基础上,将VPRS与层次分析法(AHP)相结合,利用VPRS分类质量的... 详细信息

为了获取信息系统安全状况并制定相应的安全解决方案,提出了基于变精度粗糙集(VPRS)的多属性群决策安全评估方法.以某高校校园网络系统作为评估样本,在信息系统安全评估模型的基础上,将VPRS与层次分析法(AHP)相结合,利用VPRS分类质量的概念,挖掘出隐含在数据背后的内在规律.在确定安全属性权重的基础上,对信息系统进行综合安全评估.实例证明,该方法可以有效解决多属性群决策的瓶颈问题,在信息系统安全评估中具有实际意义.

关键词：安全评估信息系统多属性群决策变精度粗糙集

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脑电信号分析的实用符号动力学方法研究

生物医学工程学杂志 2010年第2期27卷 407-410页

作者：刘函林黄华刘圹彬四川大学电气信息学院成都610064

符号动力学分析是脑电分析的一个新的研究方向,符号熵可以较好地反映非线性信号的复杂程度,具有简单、稳定的特点。本文提出了一种新的符号化方法——差分符号化,即在观测数据的切空间中进行符号动力学分析,并进一步比较了不同符号化参... 详细信息

符号动力学分析是脑电分析的一个新的研究方向,符号熵可以较好地反映非线性信号的复杂程度,具有简单、稳定的特点。本文提出了一种新的符号化方法——差分符号化,即在观测数据的切空间中进行符号动力学分析,并进一步比较了不同符号化参数对符号熵的影响。通过对不同生理状态下的脑电信号数据的对比分析表明,应用此方法可以显著地区分出正常与癫痫及睁眼与闭眼等病理及生理脑电信号的复杂度变化情况,对建立客观的脑电信号评价标准、准确进行定量分析具有重要的意义。

关键词：脑电图符号动力学符号时间序列分析复杂度符号熵

Sparse discriminant analysis for breast cancer biomarker identification and classification

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Progress in Natural Science:Materials International 2009年第11期19卷 1635-1641页

作者： Yu Shi~(a,b),Daoqing Dai~(a,*),Chaochun Liu~(a,b),Hong Yan~(b,c) a Center for Computer Vision and Department of Mathematics,Sun Yat-Sen(Zhongshan) university,Guangzhou 510275,china b Department of Electric engineering,City university of Hong Kong,83 Tat Chee Avenue,Kowloon,Hong Kong,china c school of electrical and information engineering,university of Sydney,NSW 2006,Australia Center for Computer Vision and Department of Mathematics Sun Yat-Sen (Zhongshan) University Guangzhou 510275 China Department of Electric engineering City University of Hong Kong 83 Tat Chee Avenue Kowloon Hong Kong China school of electrical and information engineering University of Sydney NSW 2006 Australia

Biomarker identification and cancer classification are two important procedures in microarray data *** propose a novel unified method to carry out both *** first preselect biomarker candidates by eliminating unrelated genes through the BSS/WSS ratio filter to reduce computational cost,and then use a sparse discriminant analysis method for simultaneous biomarker identification and cancer ***,we give a mathematical justification about automatic biomarker *** results show that the proposed method can identify key genes that have been verified in biochemical or biomedical research and classify the breast cancer type correctly.

关键词： Biomarker identification Cancer classification Discriminant analysis Maximum penalized likelihood Microarray data analysis

The Reliability Analysis of the Multi-dimensional Feature Parameters of Radar Signals

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The Reliability Analysis of the Multi-dimensional Feature Pa...

A 3-D Polarization Quadrature Amplitude Modulation Method and Constellation Mapping

2012 International Conference on Artificial Intelligence and Soft Computing(ICAISC 2012)

作者： Zhibin Yu Yongkui Sun and Weidong Jin school of electrical engineering Southwest Jiaotong university chengdu sichuan 610031 china

It is a very difficult and pressing issue to how to analyze the reliability of feature-parameters of complex radar emitter signals. In this paper, the ultimate state model of the signal feature-parameters is proposed based on the structure ultimate state of structure reliability theory, and the reliability models of signal feature-parameters are presented by point-estimate theory based on the structure reliability model. The reliability of the common feature-parameter PW and TOA are analyzed. The theoretical analysis and experimental results show that the reliability of feature parameters can be obtained by using the proposed approach when the variable distributions of the feature ultimate state function and bounds of features are known. Moreover, with the SNR and the bound of features increasing, the reliability of features are rising.

关键词： Radar signal Feature parameters Reliability.

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china Communications 2015年第10期12卷 16-26页

作者： SUN Xuehong ZHANG Haiying ZENG Zhimin GUO Caili Beijing Key Laboratory of Network System Architecture and Convergence School of Information and Communication EngineeringBeijing University of Posts and Telecommunications Key Laboratory of Intelligent Sensing for Desert information School of Physics Electrical EngineeringNingxia University

As a new three-dimensional(3-D)modulation,Polarization Quadrature Amplitude Modulation(PQAM) can be regarded as the combination of Pulse amplitude modulation(PAM) and Quadrature Amplitude Modulation(QAM) *** can better improve the digital communication efficiency and reduce the Symbol error rate(SER) of the system than one-dimensional or two-dimensional modulation *** to design a feasible constellation is the most concerned problem of PQAM *** paper first studies the relationship between the SER theoretical value of PQAM and the distribution of M and N,proposes a new M,N allocation ***,a new and straightforward design method of constructing higher-level 3-D signal constellations,which can be matched with the PQAM,and the constellation can divided into three different structures according to the ary for ***,the simulation results show that:in PQAM system,the modulation scheme and the constellation mapping scheme are proposed in this paper which can effectively reduce the system SER and improve the anti-noise performance of the system.

关键词： polarization quadrature amplitude modulation minimum euclidean distance symbol error probability 3-D constellation