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A practical method of texture segmentation and transformation for radar image simulation

A practical method of texture segmentation and transformatio...

引用

2012 ieee international conference on computer science and automation engineering, csae 2012

作者： Ai, Zuliang Zhang, Limin Zhang, Jianting Department of Electronics and Information Engineering Naval Aeronautical Engineering Institute Yantai China

ISBN: (纸本)9781467300865

It is very important to acquire the material information from the terrain texture for radar image simulation based on digital terrain. This is traditionally done manually in a special terrain-oriented method. The method faces the problems of bad generalization, great complexity, low efficiency and poor accuracy. This paper proposes a new method of terrain texture segmentation and transformation based on the image segmentation theory. Firstly the terrain texture is segmented with a method based on the color space clustering to get the regional gray level image. Then all regions are processed to generate the corresponding binary images, and at the same time an 8-connected region template is constructed to track and build the edges of these regions automatically. Finally the semiautomatic material marking of these regions with the terrain material database for radar realizes the transformation from the terrain texture to the material information. This method effectively deals with the problem of processing the large-scale terrain texture. © 2012 ieee.

关键词： Binary images

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An intelligent tracking and monitoring system based on SoPC

An intelligent tracking and monitoring system based on SoPC

引用

2012 ieee international conference on computer science and automation engineering, csae 2012

作者： Wang, Weike Zhang, Dexue Wu, Mengmeng Yan, Xiaoying Department of Information Science and Engineering Shandong University of Science and Technology Qingdao China

ISBN: (纸本)9781467300865

This paper proposes a way to implement moving target tracking and monitoring system based on System-on-Programmable-Chip (SoPC). This approach can improve the flexibility and reduce the over-reliance on host computers of the traditional embedded tracking and monitoring devices. An adaptive moving target extraction algorithm based on Gaussian model is introduced in this article and implemented in hardware-oriented ways, which improves the performance of the system. We construct a dual-core SoPC, respectively, to achieve moving target tracking and Linux-based real time video network transmissions. When operating, the Pan-Tilt-Zoom (PTZ) can drive the camera to track the moving target in sight. After testing, when the system operates at 100MHz with hardware acceleration, the time consumed of processing a video frame is about 37.32 milliseconds, and the speed can be accelerated for 41.70 times. © 2012 ieee.

关键词： Extraction

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An endeavored service-centered dynamic coordination approach and its implementation

An endeavored service-centered dynamic coordination approach...

引用

2012 ieee international conference on computer science and automation engineering, csae 2012

作者： Wang, Chengyao Zheng, Xuefeng Tu, Xuyan School of Computer and Communication Engineering University of Science and Technology Beijing Beijing 100083 China

ISBN: (纸本)9781467300865

The complex software system often involves many subsystems or components, especially for decentralized software system, it often contains multiple services having similar functions, and there are mutual dependencies among these services. How to optimize system performance is an important problem. Coordination among services is a crucial point. Meanwhile, the complexity of software systems requires to separate coordinating entities from computational entities and to achieve dynamic coordination at runtime. In this paper, an endeavored service-centered dynamic coordination approach is presented. The system is divided into two kinds of entities: coordinated entities and coordinators. Coordinated entity consists of roles, actors and services. Coordinators are responsible for coordination among coordinated entities. The five kinds of service dependencies are proposed, including equ, contain, favor, prefer and select. The coordination algorithms are described, including selection and schedule of services. Dynamic coordination is achieved by coordination operator according to service dependencies at runtime. © 2012 ieee.

关键词： Coordination reactions

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A path loss exponent based localization algorithm in cognitive radio networks

A path loss exponent based localization algorithm in cogniti...

引用

2012 ieee international conference on computer science and automation engineering, csae 2012

作者： Huang, Maosong Guo, Yan Institute of Science PLA Univ. of Sci. and Tech. Nanjing 211101 China Institute of Communication Engineering PLA Univ. of Sci. and Tech. Nanjing 210007 China

ISBN: (纸本)9781467300865

In cognitive radio networks, acquirement of the position information of primary user (PU) is of vital of importance to the communication of the secondary users(SU), as it can be used to avoid harmful interference to the network while simultaneity be exploited to improve the spectrum utilization. In this paper, a localization algorithm based on RSS (Received Signal Strength) is proposed to solve the secondary users' problem of locating the primary users in CRN (Cognitive Radio Network). To improve the precision, a method to estimate the path loss exponent in the primary users' region using the secondary users' information nearby is proposed. The path loss exponent is determined by the secondary users' communication. Simulation shows that the exact measurement for the path loss exponent can promote the localization precision obviously. © 2012 ieee.

关键词： Cognitive radio

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Two-disk dynamo system and analysis of its basic non-linear dynamics characteristic

Two-disk dynamo system and analysis of its basic non-linear ...

引用

2012 ieee international conference on computer science and automation engineering, csae 2012

作者： Yao, Qi-Guo Liu, Guo-Ping School of Mechanical and Electrical Engineering Zhejiang Ocean University Zhejiang Zhoushan 316000 China

ISBN: (纸本)9781467300865

In order to simulate and explain the reversals of the geomagnetic field, this paper set up the relationship between the Rikitake two-disk dynamo system's currents and the angular velocity of disk. Through calculating the Lyapunov exponents and fractal dimension of its chaotic attractor, discussing the system's chaotic bifurcation behavior and the state diversification of its periodical windows, as well as its chaotic movement patterns, it is explained that the Rikitake two-disk dynamo system has rich chaos phenomenon. After simulating, it obtained the system's chaos attractors. Moreover, it analyzed the system's basic dynamics behavior such as symmetry, power spectrum, equilibrium pots, stability, and so on. These chaotic behaviors can be just used to simulate the reversals of the geomagnetic field. Furthermore, it is no doubt that the researching results will have important theory significance and practical value in controlling mechanical and electrical aspects. © 2012 ieee.

关键词： Fractal dimension

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The influence of word normalization in English document clustering

The influence of word normalization in English document clus...

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2012 ieee international conference on computer science and automation engineering, csae 2012

作者： Han, Pu Shen, Si Wang, Dongbo Liu, Yanyun School of Information Management Nanjing University Nanjing China Institute of Command Automation PLA University of Technology and Science Nanjing China

ISBN: (纸本)9781467300865

Stemming or lemmatization method is a key step in English document processing. Based on three clustering algorithms and two evaluation functions, the paper makes a comprehensive study about two stemming algorithms and one lemmatization algorithm. According to the experimental result, it shows that the performance is not remarkable, compared with Snowball stemmer and Stanford lemmatization, Porter stemmer can make a better performance in entropy and purity. © 2012 ieee.

关键词： Clustering algorithms

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Dynamic quality evaluation of elbow flowmeter

Dynamic quality evaluation of elbow flowmeter

引用

2012 ieee international conference on computer science and automation engineering, csae 2012

作者： Wang, Feng College of Mechanical Engineering Hebei United University Tangshan China

ISBN: (纸本)9781467300865

In order to assess the dynamic quality of the elbow flowmeter, the influence of ambient temperature, inner-pipe medium temperature, and pipeline lengths of the front and rear straight sections on the geometrical shape of the elbow pipe was presented in the paper. The change rule of the curvature radius to inside diameter ratio (R/D) and the quality index in various operating conditions were acquired quantitatively. The significance of the dynamic quality evaluation lies in that the knowledge of the change rule can guide users to select the suitable flowmeters in some specific application, rather than simply choosing the meters with larger R/D, which may help to reduce the system cost. In addition, the actual R/D instead of the theoretical manufacturing R/D is used to calculate the volume of flow, which can improve the measurement accuracy. The evaluation system developed with VB, Access, and MATLAB has been applied to some thermal power plant, the good usage effect having been obtained. © 2012 ieee.

关键词： Flowmeters

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Development of a test apparatus for micro-finned tube used in air-conditioners

Development of a test apparatus for micro-finned tube used i...

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2012 ieee international conference on computer science and automation engineering, csae 2012

作者： Zhang, Shaozhi Shi, Mingyao Chen, Qi Chen, Guangming Refrigeration and Cryogenic Engineering Institute Hangzhou 310027 China

ISBN: (纸本)9781467300865

Micro-finned tubes are widely used in air-conditioners to improve the performance. A test apparatus for their heat transfer characteristics is helpful for the development of new finned tube. In this paper such an apparatus was set up to carry out evaporation and condensation test. The refrigerant used was R410A. Automatic control which was designed to guarantee stable operation could be realized for a wide range of test conditions. Namely, the diameter of the tested tube varied from 5mm to 7mm, and the mass flow velocity varied from 100 to 400kg/m2s. Friendly human-machine interface was also established so that heat transfer coefficient could be obtained when stable criteria were met. Sample curves were given for evaporation and condensation tests respectively. © 2012 ieee.

关键词： Flow velocity

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An extension of Kim's algorithm for Apollonius tenth problem

An extension of Kim's algorithm for Apollonius tenth problem

引用

2012 ieee international conference on computer science and automation engineering, csae 2012

作者： Xu, Hai-Yin Fang, Xiongbing School of Computer Science and Technology Huazhong University of Science and Technology Wuhan 430074 China

ISBN: (纸本)9781467300865

The Kim's method is a computationally efficient and easy-to-code algorithm for the Apollonius tenth problem. However, the method does not analyze the positional relationship of three arbitrary circles and the desired Apollonius circles may be nonexistent. In this paper, we first classify common tangent lines of two circles according to the positional relationship of the two circles and judge the case the Apollonius circle does not exist. We further indicate which type of common tangent lines need to be computed and propose a geometric approach to calculate them. After that the common tangent lines are transformed into circles by inverse Möbius transformation and then the desired Apollonius circles are generated by using radius post-adjustment rule to dispose the circles. Experimental results show that our method can efficiently deal with arbitrary case of the Apollonius tenth problem. © 2012 ieee.

关键词： Inverse problems

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Design and implement of a modularized CNC interpreter based on the integration of tool path planning module

Design and implement of a modularized CNC interpreter based ...

引用

2012 ieee international conference on computer science and automation engineering, csae 2012

作者： Long, Chen Dong, Yu Han, Zhang Cong, Geng Lei, Dong School of Computer Science and Technology University of Science and Technology of China Hefei Anhui China National Engineering Research Centre for High-end CNC Shenyang Institute of Computing Technology Chinese Academy of Sciences Shenyang Liaoning China Shenyang Institute of Computing Technology Chinese Academy of Sciences Shenyang Liaoning China

ISBN: (纸本)9781467300865

Traditional CNC (computer numerical control) system which Based on ISO 6983 [1] is separated from the CAM module, so some important information such as 3D geometry, tolerance information and surface roughness is lost that information can not be completely transferred between CNC system and CAM. In order to improve the functionality and expansibility of the existing CNC interpretation technique, a new model of NC program interpreter is proposed which is divided into three modules. Based on the control of the central management module, the modularized CNC interpreter module can call the tool path planning module directly. A prototype system which verified the validity of the proposed method was proposed and the experimental result shows that the new CNC interpreter system can improve the interpretation efficiency significantly. © 2012 ieee.

关键词： Surface roughness

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