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检索条件"任意字段=2009 International Conference on Computer Technology and Development, ICCTD 2009"

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Design and implementation of a location awareness system for field police work

Design and implementation of a location awareness system for...

引用

international conference on Geoinformatics

作者： Duansheng Chen Yongquan Du Yibao Zhang College of Computer Science and Technology Huaqiao University Quanzhou Fujian China

ISBN: (纸本)9781424445622

This paper presents a hand held location awareness device that enables police officers in the field to receive or send messages on the location of activities and events, and reach the destination quickly with the help of a detailed map. The design and development of the personal location awareness system is professionally and practically oriented. A simple but practical and user-friendly solution has been designed and implemented for the application environment of most Chinese cities. The system distinguishes itself from other vehicle carried GPS services for police in the following characteristics. First, a short message is the major communication medium. It can describe the dispatchment task clearly and quickly. Any photo taken at a scene can be sent back to the dispatch center as soon as the patrolmen arrive. The user needs no time to take notes and has no chance to misunderstand a command Second, a special software tool is developed to make a multi scale tiled image map for a hand held device, and a special map file format is established. By comparing to vector map, it is much easier to put into practice in a location based services (LBS) limited area. With the detailed maps of a labeled site, the basic requirement of location awareness can be met. Third, a text based message management system with restricted database operations is developed, which needs no DBMS in resident memory and makes all the application software run smoothly. The professional application of LBS needs three services. They are short message service of a public wireless communication system, GPS civil signal, and the dispatch message from police dispatch center with the help of a GIS system. The popularization of GPS embedded cell phone makes this kind of personal location aware application more cost effective and affordable for police bureaus. The proposed system has been put into practical use in a few municipal public security bureaus in China.

关键词： Mobile radio mobility management Global Positioning System Application software Cities and towns Vehicles Layout Software tools Software development management Databases Memory management

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Research on all-digital strip steel rectifying electro-hydraulic control system

Research on all-digital strip steel rectifying electro-hydra...

引用

IEEE international conference on Mechatronics and Automation

作者： Huixiong Wan Haibo Huang Rui Lin Wuhan University of Technology Wuhan Hubei China Department of System Design China Ship Development and Design Center Wuhan Hubei China

The simulative electro-hydraulic servo system has been widely used for rectifying system in steel industry. But the simulative electro-hydraulic servo system has the shortcoming of high cost, poor anti-pollution, high request of use and maintenance, frequent troubles and the instable working state, which could affect the product quality of strip steel and the normal production of factory. From the 1980s, the study on the digital valve instead of the servo valve and the real-time control by the computer in the electro-hydraulic control system has started. Because the study on digital valve makes little progress worldwide, it has not formed the commercial products yet at present. Thus the popularization and application for digital electro-hydraulic control system is limited. An all-digital strip steel rectifying electro-hydraulic control system successfully used in the field in China for strip steel rectifying will be introduced in this paper. This system is a complete-feedback control system, which adopts the high speed on-off ball valve as its digital valve, PWM signals as the input of digital valve, photoelectric sensor as its element for detection and feedback and PLC controller as its control device. From the theoretical analysis and field operation results of the system, it is shown that this system has not only good stability, high position precision, fast response, satisfying the performance requirement of strip steel rectifying , but also low cost, strong ability of anti-pollution and high reliability, so this system will have broad popularization value and application prospect.

关键词： Strips Steel Control systems Valves Servomechanisms Costs Pulse width modulation Metals industry Production systems Production facilities

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Trusted Computing Based Mobile DRM Authentication Scheme

Trusted Computing Based Mobile DRM Authentication Scheme

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The Fifth international conference on Information Assurance and Security(第五届信息保障与安全国际会议)

作者： Zhen YANG Yingxu LAI Kefeng FAN School of Computer Beijing University of Technology Beijing 100124 China Information Security Center State Key Laboratory of Networking and Switching Technology Beijing Univ

ISBN: (纸本)9780769537443

Rapid development of mobile communications business leads to greater focus on effective mobile DRM (digital right management) for providing improved content protection. To be able to guarantee DRM policies enforcement, the trusted mobile working environment based on a tamperresistant hardware module is needed. In this paper, firstly, a construction of the trusted mobile computing based on TPM/TPCM is introduced. Thereafter, an example of DRM authentication scheme in user domain integrated with trusted mobile platform is discussed. Based on the new characters provided by trusted computing platform, the authentication scheme can be simplified, which is safe enough to increase the security of latest mobile DRM framework and promote its interoperability and compatibility.

关键词： trusted mobile computing mobile platform digital right management identity authentication

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3D Geological Modelling of the Series of Deep Strata in Xiaermen Oilfield

3D Geological Modelling of the Series of Deep Strata in Xiae...

引用

2009 Asia-Pacific conference on Information Processing

作者： Jinkai Wang , Jinliang Zhang College of Marine Geo-science Ocean University of China, OUC Qingdao, China College of Resource Science and technology Beijing Normal University, BNU Beijing, China

The technology of 3D computer modeling has been widely used in reservoir fine description, especially in the development phase. It's an effective way to enhanced oil recovery and reduce water cut. This paper presents an example of the application 3D modeling to the series of deep strata in Xiaermen Oilfield, Henan, China. In this paper, the geological, geophysical, petrophysical and engineering informations are integrated then a comprehensive reservoir model is built that can enhance reservoir management planning. First, a 3D structural model is built which consists of the faults model and the horizon model, then based on the structural model a 3D stochastic microfacies model of each reservoir zone through the analysis and integration of core and log data from 15 wells in the study area. Second, the physical property data is analysed among the microfacies and builds the petrophysical model which interpolation method is controlled by the distribution of the microfacies.

关键词： 3D geological modeling, variation function, data analysis, face control modelling

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development OF ELECTRONIC CONTROL UNIT FOR THE ELECTRIC ROBOT VEHICLE IN AN ORCHARD APPLICATION

DEVELOPMENT OF ELECTRONIC CONTROL UNIT FOR THE ELECTRIC ROBO...

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亚洲精细农业与计算机农业应用联合大会

作者： Oscar C. Barawid Jr. Noboru Noguchi Vehicle Robotics Laboratory Bio-production Engineering Division of Environmental Resources Graduate School of Agriculture Hokkaido University Sapporo 065-8589 Japan

The objective of the research was to develop a hardware called electronic control unit (ECU) which is the most important for the development of electric utility robot vehicle. The goal of developing an electronic robot vehicle is to use in an orchard application. The research used Gator Electric Utility Vehicle as a platform manufactured by Deere and Company. The vehicle electric motor is powered by 48-VDC (Volt direct-current) with 8 batteries (6-Volt each battery). The ECU will be used as a vehicle controller to control different functions of the electronic robot vehicle. The controller can control steering, vehicle movement (forward, backward, and neutral), vehicle speed, and emergency stop (manual and remote control switch). In order to develop a controller for any robot vehicle, an appropriate consideration of controller specifications is necessary. The vehicle controller used PIC18F458 as its microchip device which has a program memory of 32 kbytes, data memory of 1536 bytes in SRAM (static random access memory) and 256 bytes in EEPROM (electrically erasable programmable read-only memory) with 33 pins of I/O and 8 channels of A/D in 10 bits. To control the vehicle movement (forward, backward, and neutral) and emergency stop, relays (5-Volt) were included to the vehicle ECU to command the vehilce by switching on and off the vehicle electric motor. To control the vehicle steering system and speed, a CAN (control-area-network) controller interface was included in the vehicle ECU to send and receive command data from the vehicle computer. And to obtain a feedback signal from the sensors attached to the vehilce, A/D (analog to digital) converter was included to the vehicle ECU. The vehilce controller was tested and evaluated by running the vehilce autonomously and sends commands from the vehilce computer to the controller. The vehilce ECU could control accurately the vehicle steering, movement, speed and emergency stop.

关键词： Electronic robot vehicle, ECU (Electronic control unit), CAN (Control area network), evaluation accuracy, autonomous navigation

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Multie-Scale Joint Bilateral Image and Video Texture Upsampling

Multie-Scale Joint Bilateral Image and Video Texture Upsampl...

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2009 11th IEEE international conference on computer-Aided Design and computer Graphics(IEEE CAD/Graphics 2009)

作者： Chunxia Xiao Yongwei Nie Guangpu Feng School of computer,Wuhan University Wuhan,Hubei,China

We present a novel approach for upsampling the synthesized image and video texture using a multi-scale joint bilateral *** method is based on the motivation:if the available exemplar texture is used as a prior to upsample the synthesized texture,a high resolution result that better preventing image blurring can be *** joint bilateral upsampling applies a spatial filter on the synthesized texture,and jointly applies a similar range filter on exemplar texture which guides the interpolation from low to high *** further enhance the detail of the upsampled texture,we propose multi-scale joint bilateral upsampling method which progressively enhances the detail of the upsampled *** addition,we present a detail-aware texture optimization approach which combines texture optimization and histogram matching of the image detail to improve the quality of the synthesized ***,we present an accelerated joint bilateral filter,which enables our upsampling process to interactively generate a large *** show results for upsampling image and video texture and compare them to traditional upsampling methods,which illustrate that our methods require low computational and memory costs while receive better results.

关键词： Texture synthesis,global optimization,bilateral filter,image upsampling.

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Application of the marine oil spill surveillance by satellite remote sensing

Application of the marine oil spill surveillance by satellit...

引用

2009 international conference on Environmental Science and Information Application technology

作者： Wu Dan Yantai Oil Spill Response Technical Center Shandong Marine Safety Administration,SDMSA Yantai,China 264000 Shen Jifeng computer Department Bengbu Tank Institute Anhui Province,China 233050 Zhang Yongzhi computer Department Bengbu Tank Institute Anhui Province,China 233050 Zhao Pu Yantai Oil Spill Response Technical Center Shandong Marine Safety Administration,SDMSA Yantai,China 264000

Oil spill accidents are seen relatively frequent and becomes a severe threat to coastal and marine ecosystems and water ***,active surveillance and rapid response to marine oil spills is important and essential to environment ***,this paper lays emphasis on the research of monitoring the marine oil spills for application by satellite remote sensing especially *** characteristics of satellites and image-forming principle of oil spill information in remote sensing images are analyzed at *** how to monitor the marine oil spills by satellite remote sensing and how to identify and detect marine oil spills information in SAR images are discussed *** the practical applications examples of the marine oil spill surveillance by satellite remote sensing in oil spill accidents of oil tanker "Hebei Spirit",the method this paper proposed is proved to be very effectively and feasibly for the fast response and detection to oil spills especially in the waters near Bohai sea of *** future development of marine oil spill surveillance is suggested with conclusion.

关键词： remote sensing SAR marine oil spill surveillance application

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A New Survivable Heuristic Algorithm Based on Hamiltonian Cycle Protection in Multi-Domain Optical Networks

A New Survivable Heuristic Algorithm Based on Hamiltonian Cy...

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international conference on computer Engineering and Applications（ICCEA 2009）

作者： Lei Guo1,2 ,Xingwei Wang1,Jiannong Cao2,Weigang Hou1,Hongming Li1,Hongpeng Wang1 1 College of Information Science and Engineering,Northeastern University,Shenyang 110004,China 2 Department of Computing,Hong Kong Polytechnic University,Hung Hom,Kowloon,Hong Kong

This paper proposes a new algorithm,Multi-domain Hamiltonian Cycle Protection(MHCP) to tolerate single-fiber link failure in multi-domain optical *** MHCP,we develop Local Hamiltonian Cycle(LHC) in each single-domain and Globe Hamiltonian Cycle(GHC) in multi-domains to protect the intra-link and inter-link failures,*** results show that,compared to previous algorithm,MHCP can obtain better resource utilization ratio and lower blocking probability.

关键词： optical networks,survivability,multi-domain,Hamiltonian cycle protection,virtual topology

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INVARIANT DESCRIPTOR FOR MULTI-VIEW 3D FACIAL SURFACE

INVARIANT DESCRIPTOR FOR MULTI-VIEW 3D FACIAL SURFACE

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2009 2nd IEEE international conference on Broadband Network & Multimedia technology（IC-BNMT2009）

作者： Guo Zhe 1,2,Zhang Yanning 1,Xia Yong 2,3,Lin Zenggang 1,Feng Dagan 2,3 1 Shaanxi Key Laboratory of Speech& Image Information Processing (SIIP),School of computer Science,Northwestern Polytechnical University,Xi'an,China 2 Biomedical and Multimedia Information technology (BMIT) Research Group,School of Information Technologies,University of Sydney,Australia 3 Center for Multimedia Signal Processing (CMSP),Department of Electronic & Information Engineering,Hong Kong Polytechnic University,Hong Kong

This paper proposed an approach to extraction of invariant surface descriptor for multi-view 3D face *** this approach,3D facial data were first normalized to the same location,scale and *** normalized faces were then cropped to highlight the most significant *** this region,six 3D invariant moments were finally calculated and defined as a *** proposed invariant descriptor has been compared to the descriptor presented by Xu et *** the Face Recognition Grand Challenge (FRGC,version 2.0) *** results demonstrated that our descriptor has higher invariance and better differentiation ability,and therefore can be applied to identification and authentication of multi-view 3D face models.

关键词： Surface invariant descriptor Multiview 3D face

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X3D Experiences On A Hydro Junction Digital:A Case study of Three Gorges Dam

X3D Experiences On A Hydro Junction Digital:A Case study of ...

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E-Business·Creative Design·Manufacturing——2009 IEEE 10th international conference on computer-Aided Industrial Design & Conceptual Design（CAID&CD’2009）

作者： Chunlai Chai College of computer Science and Information Engineering Zhejiang GongShang University Hangzhou China

This work presents our experience in using Virtual Reality techniques to digitally reconstruct the World famous Hydro Junction--Three Gorges *** paper discusses the work undertaken by the China Water Museum to develop X3D-based Water Museum Virtual Reality *** system is to deal with difficulties in applying 3D information system in virtual reality experience,which is written in Extensible-3D（X3D）and *** order to achieve an accurate 3D representation,the process was divided in phases to better structure and fundament such development:historical data gathering and analysis;3D modeling and;interactive immersive *** to the nature of this project,different people from different areas of expertise were involved,working together in a unified development *** is our opinion that the online design review has achieved its *** we identified some features that would improve collaboration such as digital 3D annotation and support for online collaboration in current X3D browsers.

关键词： Virtual Reality X3D 3D Modeling,VRCluster Graphics Rendering

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