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Image Quality Assessment in Contourlet Domain Based on Structural Similarity

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Image Quality Assessment in Contourlet Domain Based on Struc...

2010 2nd International Conference on Intellectual Technology in Industrial Practice (ITIP2010)

作者： Chen Rongyuan1 2 Zhang Feiyan2 Lin Liyu2 Wang Leiguang3 1. information Department Hunan University of Commerce Changsha China 410205 2. Electronic information school Wuhan University Wuhan China 430079 3. school of Resource Science Southwest Forestry University Kunming China 650224

In image processing field, wavelet transformation has been replaced by Contourlet transformation gradually, so it is important to find an image quality assessment model that can be used in image processing algorithms based on Contourlet transform. Based on the research of image structural properties in Contourlet domain, and bring in the Contrast Sensitivity Function, in this paper we propose an image quality assessment method called the Contourlet Transform based Structural Similarity. The result shows that the proposed metric correlates well with the subjective judgment. And it can be easily embedded into image processing algorithms to guide or regulate them.

关键词： Image Quality Assessment (IQA), Structural Similarity (SSIM), Contrast Sensitivity Function (CSF), Contourlet Transform based structural similarity (CTSSIM)

How to Improve Scientific Research of Young Teachers

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How to Improve Scientific Research of Young Teachers

2009中国控制与决策会议

作者： Liqun Gao~1,Yang Li~2,Gai Pan~2,Kun Wang~2 1.school of information Science and Engineering,Northeastern University,Shenyang 110004 2.school of information Science and Engineering,Northeastern University,Shenyang 110004 2.Northeastern University,Shenyang 110004 2.Aerontatical Automation College,Civil Aviation University of China,Tianjin 300300,China

＜正＞The young teachers are the strongest livingness in teaching,the hope for the development of the ***, currently,many young teachers in universities have the potential to improve their abilities in *** paper made an elaborate analysis from the points of research concept,research attitude,research communion,research craftsmanship and research regulation,which can play an active role in guiding the young teachers to improve their research ability.

关键词： Young Teachers Teaching Researching Research Ability

我国省级公共图书馆数字参考咨询服务合作模式现状分析

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图书馆杂志 2011年第4期30卷 50-54页

作者：武琳胡千乔郭婵中山大学资讯管理系广州510006 武汉大学信息管理学院武汉430072

通过对我国省级公共图书馆网站开展数字参考咨询服务合作情况的调研,发现各地区联合参考服务发展极不平衡,但是合作的成熟模式已逐渐凸现,而且跨地区、跨系统联合发展的趋势显现。提出积极开展合作、整合共享平台的发展建议。

关键词：合作数字参考咨询公共图书馆合作模式

Robust H∞ Dynamic Output Feedback Controller Design for a Class of Flexible Spacecraft

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Robust H∞ Dynamic Output Feedback Controller Design for a C...

第二十九届中国控制会议

作者： ZHOU Yanru1,ZENG Jianping2 1.school of information Science and Technology,Xiamen University,Xiamen 361005,P.R.China2.school of information Science and Technology,Xiamen University,Xiamen 361005,P.R.China

In this paper,the robust attitude controller designed for flexible spacecraft with quality characteristic parameter uncertaintyand internal and external disturbances uncertaintyis *** of all,through coordinate transformation and approximate linearization method,the model of flexible spacecraft is transformed into a control model which is easy to be designed,and then a new form was used to deal with uncertainties appropriately,and finally the dynamic output feedback controller can be obtained by using variable substitution method and LMI *** simulation results show that the controller has strong robustness and can adapt to biggish quality characteristic parameter uncertainty and suppress both internal and external disturbances *** design method has some referential value in achieving very accurate and stable satellite attitude control.

关键词： Quality Characteristic Parameter Uncertainty Internal and External Disturbances Uncertainty Coordinate Transformation LMI Variable Substitution Method Dynamic Output Feedback

Searching for complete set of free resource rectangles on FPGA area based on CPTR

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Journal of Shanghai University(English Edition) 2011年第5期15卷 391-396页

作者：柴亚辉沈文枫徐炜民刘觉夫郑衍衡 school of Computer Engineering and Science Shanghai University school of information Engineering East China Jiaotong University

As a coprocessor, field-programmable gate array （FPGA） is the hardware computing processor accelerating the computing capacity of coraputers. To efficiently manage the hardware free resources for the placing of tasks on FPGA and take full advantage of the partially reconfigurable units, good utilization of chip resources is an important and necessary work. In this paper, a new method is proposed to find the complete set of maximal free resource rectangles based on the cross point of edge lines of running tasks on FPGA area, and the prove process is provided to make sure the correctness of this method.

关键词： field-programmable gate array (FPGA) partially dynamic reconfigure maximal free rectangle occupied rectangle

Detection and parameter estimation of multicomponent LFM signal based on the fractional Fourier transform

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Science in China(Series F) 2004年第2期47卷 184-198页

作者： QI Lin1, 2, TAO Ran1, ZHOU Siyong1 & WANG Yue1 1. Department of Electronic Engineering, Beijing Institute of Technology, Beijing 100081, China 2. school of information Engineering, Zhengzhou University, Zhengzhou 450052, China Correspondence should be addressed to QI Lin (email: qilin@***) Department of Electronic Engineering Beijing Institute of Technology Beijing China school of information Engineering Zhengzhou University Zhengzhou China

This paper presents a new method for the detection and parameter estimation of multicomponent LFM signals based on the fractional Fourier transform. For the optimization in the fractional Fourier domain, an algorithm based on Quasi-Newton method is proposed which consists of two steps of searching, leading to a reduction in computation without loss of accuracy. And for multicomponent signals, we further propose a signal separation technique in the fractional Fourier domain which can effectively suppress the interferences on the detection of the weak components brought by the stronger components. The statistical analysis of the estimate errors is also performed which perfects the method theoretically, and finally, simulation results are provided to show the validity of our method.

关键词： LFM signal parameter estimation fractional Fourier transform.

Application and Research of Signal Transmission in Coal Mine Underground for Spread Spectrum Communication

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Application and Research of Signal Transmission in Coal Mine...

ICEMI'2005第七届国际电子测量与仪器学术会议

作者： Wang Wenxing1 Yang Gongxun1 Wang Wenhua2 (1school of Mechanical Electronic and information Engineering China University Mining and Technology (Beijing) Beijing 100083 China 2school of information Science and Technology Beijing Institute of Technology Beijing 100081 China)

The problem existed in signal transmission system of coal mine, especially down the well are summarized. It is pointed that the wired cable especially power line has the economic, valid, dependable ch

关键词： Spread spectrum power line communication coal mine communication CDMA.

Modelling Issues on Traceability System in Food Supply Chain

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Modelling Issues on Traceability System in Food Supply Chain

第一届交通运输工程国际学术会议

作者： YANG Yimin1, PENG Jian2, and ZHU Xiaoping3 1school of Business, Hunan Agricultural University Changsha City, Zip: 410128 2school of information and Technology, Hunan Agricultural University Changsha City, zip:410128 3school of information and Technology, Hunan Agricultural University Changsha City, zip:410128

This paper sets forth the concept of traceability, its importance in improving added value of food and security of food supply chain. On the basis of explaining the structure of a food supply chain and analyzing the process of request and response of information, the paper provides a software architecture of a distributed traceable system of food supply chain, this architecture is based on web service, XML and related technologies. Then, the paper discusses robustness, security and performance of response time which are related to this software architecture. In conclusion, the paper points out that the future studies on traceable system in food supply chain will focus on two issues, one is how to improve the capability of each node in learning traceable information from others;the other is the study of dynamic strategies to minimize the access delay in the traceability systems.

关键词： traceability food supply chain Web Service distributed system XML

Punctured(2,1,N)系列卷积码的编码及其Viterbi译码的软件实现

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山东大学学报（理学版） 2002年第1期37卷 48-53页

作者：袁东风李作为张锋山东大学信息科学与工程学院济南250100 北京邮电大学信息工程学院北京100876

给出了由 (2 ,1,N)系列卷积码作为母码产生的punctured卷积码的编码及其Viterbi译码的软件实现方法 ,从而为各种不同码率的卷积码的编、译码给出了一种通用的实现方法。

关键词： Punctured卷积码移动衰落信道多级编码分量码差错控制编码方法 Punctured(2,1,n)系列卷积码 Viterbi译码软件实现