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Irrigation Pumping Station Wireless Measurement and Control System based on ZigBee and 3G Network

Irrigation Pumping Station Wireless Measurement and Control ...

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international conference on internet technology and Applications (iTAP)

作者： Zhi-wu Chen Jia-min Weng Xue-qing Yang Jian-qin Feng

At present, pumping station measurement and control system has the problems of networking difficult, poor Expansibility, low data transfer rate. In order to solve these problems, a new type pumping station measurement and control system is designed by using ZigBee and 3G network. In this system, the local measurement & control unit by using ZigBee realizes to each remote measurement & control nod wireless information acquisition and the remote control, and also, the local measurement & control unit takes 3G network to achieve two-way data transfer to monitoring center. Through the use of ZigBee & 3G network technical advantages, The preliminary experimental results show that the system can not only successfully acheive the wireless measurement and control tasks, but also overcome many defects of the current measurement and control system.

关键词： Zigbee Wireless communication Wireless sensor networks Control systems Digital signal processing Ground penetrating radar Irrigation

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An efficient VQ-based method for monaural speech separation

An efficient VQ-based method for monaural speech separation

引用

international conference on systems, signals and image Processing, IWSSIP

作者： Sonay Kammi Mohammad Reza Karami Faculty of Electrical and Computer Engineering Babol University of Technology Babol Iran

We present a new model-based monaural speech separation technique for separating two speech signals when only a single recording of their linear mixture is available. Two important aspects of model-based monaural speech separation are the applied modeling technique and the estimation technique. In this approach, we introduce sub-section vector quantization technique and use it as the modeling technique instead of conventional vector quantization method. Then, separated speech signals are estimated using a simple soft mask filter whose states are controlled by the components of the codevectors. In the speech separation experiments, the proposed method is shown to improve SNR by 1.8 dB compared to the system using conventional VQ technique as the modeling technique and binary mask filter as the estimator.

关键词： Speech Training Estimation signal to noise ratio Approximation methods Vector quantization Time domain analysis

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A Compressive Sensing Photoacoustic Imaging System based on Digital Micromirror Device

A Compressive Sensing Photoacoustic Imaging System Based on ...

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2011 3rd international conference on signal Processing systems(ICSPS 2011)

作者： Naizhang Feng Mingjian Sun Liyong Ma Department of Control Science and Engineering Harbin Institute of Technology

ISBN: (纸本)9781457701726

In this paper, a compressive sensing photoacoustic imaging scheme based on Digital Micromirror Device(DMD) is built. In compressive sensing photoacoustic imaging, DMD is used as an optical mask. The mask is placed between a short-pulsed laser and biological tissues to realize the coded illumination. To realize the random illumination, the coded pattern of the mask should be changed for each laser pulse. based on the DMD, random code patterns of the mask can be changed quickly by controlling a digital logical circuit. The illuminated tissue absorbs the optical energy to generate the ultrasonic waves. The generated ultrasonic waves along the same arc are compressed and detected by an unfocused ultrasonic transducer. After certain measurements, the photoacoustic image can be reconstructed by a suitable CS reconstruction algorithm.

关键词： Photoacoustic Imaging Compressive Sensing Digital Micromirror Device Micro-electro- mechanical System

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Feature extraction of Digital Aerial images by FPGA based implementation of edge detection algorithms

Feature extraction of Digital Aerial Images by FPGA based im...

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international conference on Emerging Trends in Electrical and Computer technology (ICETECT)

作者： R. Harinarayan R. Pannerselvam M. Mubarak Ali Dhirendra Kumar Tripathi School of Computing SASTRA University Thanjavur Tamil Nadu India

Edge of image is one of the most fundamental and significant features. Edge detection is always one of the classical studying projects of computer vision and image processing field. It is the first step of image analysis and understanding. With the continuous improvement of remote sensing image, especially the appearance of Digital Aerial image, edge detection is necessary step to extract information from the Digital Aerial images..The purpose of edge detection is to discover the information about the shapes and the reflectance or transmittance in an image. The correctness and reliability of its results affect directly the comprehension machine system made for objective world. In this paper FPGA-based architecture for edge detection algorithms has been proposed. The implementation of edge detection algorithms on a field programmable gate array (FPGA) is having advantage of using large memory and embedded multipliers. FPGAs are providing a platform for processing real time algorithms on application-specific hardware with substantially higher performance than programmable digital signal processors (DSPs). The proposed architecture can be used as a building block of a aerial imaging systems for navigation and for the pattern recognition. The hardware implementation results are presented for the Sobel and Prewitt operator.

关键词： image edge detection Kernel Pixel Field programmable gate arrays Convolution signal processing algorithms Delay lines

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Empirical mode decomposition based near-field equivalence source imaging system for sound identification

Empirical mode decomposition based near-field equivalence so...

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international conference on Information, Communications and signal Processing

作者： ChingShun Lin YungCheng Chao Department of Electronic Engineering National Taiwan University of Science and Technology Taipei Taiwan

ISBN: (纸本)9781457700293

The conventional microphone array near-field Fourier acoustic holography using Discrete Fourier Transform (DFT) is able to efficiently reconstruct sound field and acquire an image of noise distribution. However, Fourier transform causes measuring error in practical applications, and people have to select primary frequency for observing sound field holography based on the spectrum of source signal. In this paper, we use the empirical mode decomposition (EMD) owing to its completeness, orthogonality, and adaptiveness, which are able to decompose multiple sound sources in the spatial domain and acquire instantaneous frequencies via intrinsic mode functions (IMFs). Prior information about the primary frequency is not necessary by this approach that makes the simultaneous observation of each source possible. In addition, EMD sound source imaging approach may be integrated into a near-field equivalent source imaging (NESI) system, which includes a virtual microphone technology generally used for sound field image enhancement. We have implemented and compared the constituent 1D EMD, 2D EMD spatial transform systems, and EMD based NESI approach in Labview language. Several experimental results and detailed discussions are also provided to verify the characteristics of multiple sound sources.

关键词： Microphones image reconstruction Arrays Holography Surface reconstruction Acoustics

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Multiple views based human motion tracking in surveillance videos

Multiple views based human motion tracking in surveillance v...

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IEEE conference on Advanced Video and signal based Surveillance (AVSS)

作者： Bogdan Kwolek Polish-Japanese Institute of Information Technology Warszawa Poland

Most work on activity recognition focuses on 2D image properties, holistic spatiotemporal representations, or space-time shapes in image domain rather than with 3D pose in a body-centric or world frame. Such techniques rely on advanced pattern recognition algorithms and interpreting complex behavioral patterns. In this work we posit that it is possible to achieve 3D pose tracking using videos recorded in multi-camera surveillance systems. We show experimental results that were obtained on PETS 2009 datasets. The estimation of the 3D articulated motion is achieved using a modified particle swarm optimization.

关键词： Tracking Three dimensional displays Cameras Humans Surveillance Solid modeling Joints

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The third ITU Kaleidoscope conference: "innovations for digital inclusion"

The third ITU Kaleidoscope conference: "innovations for digi...

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作者： Sherif, Mostafa Hashem Maeda, Yoichi Polidori, Stefano United States NTT Advanced Technology Corporation Japan Switzerland

The third international Telecommunication Union Telecommunication Standardization Sector (ITU-T) Kaleidoscope Academic conference, held in India, 13 17 December, 2010, focused on innovations for digital inclusion and the conference title was 'Beyond the internet-innovations for future networks and services'. 'A user-centric approach to QoS regulation in future networks', presented by Eva Ibarrola, won the first prize for the best paper category. 'How can an ISP merge with a content delivery network (CDN)?' presented by Kideok Cho, won the second prize. 'Introducing elasticity and adaptation into the optical domain toward more efficient and scalable optical transport networks', presented by Masahiko Jinno, won third prize. One particular innovation in the 2010 conference was a special session called 'Jules Verne's (JV) corner', designed to stimulate leaps of imagination into the future telecommunication.

关键词： signal systems

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Three-dimensional Radar Imaging based on Sparse Measurements

Three-dimensional Radar Imaging Based on Sparse Measurements

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2011 3rd international conference on signal Processing systems(ICSPS 2011)

作者： Zou Xin Zhou Jianxiong Fu Qiang Laboratory ATR School of Electronic Science and Engineering National University of Defense Technology

ISBN: (纸本)9781457701726

In conventional three-dimensional Inverse Synthetic Aperture Radar (ISAR) imaging, high range-resolution is attained by transmitting a wideband signal and high cross-range resolution is attained by increasing the observation azimuth and elevation. Consequently, large collection time and data storage is needed for this three-dimensional imaging method. This paper presents three-dimensional imaging approaches by using the sparse measurements and convex optimization. This approach could decrease data collection time and data storage amount greatly;the proposed approaches have been verified using numerical simulations of point target, which show that it could recover the image exactly and maintain the imaging resolution.

关键词： 3D ISAR Sparse measurement Compressed sensing Three-dimensional imaging

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Online survey system for image-based clinical guideline studies using the Delphi method

Online survey system for image-based clinical guideline stud...

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Annual international conference of the IEEE Engineering in Medicine and Biology Society

作者： Todd M. Harper Chia-Chi Teng Brigham Young University

ISBN: (纸本)9781424441211

The increasing use of health information technology (HIT) is due to a rising interest in improving the quality of health care. HIT has the potential to reduce cost and transform services. Proper clinical support systems will contribute to the meaningful use of HIT systems by providing a wide array of data to clinicians for the diagnosis and treatments. Clinical guidelines, created by a consensus of experts, can be put in place to assist physicians in making clinical decisions. Delphi methods are commonly used to create consensus from surveys completed by a team of experts. image based studies could create guidelines that standardize severity, deformity or other clinical classifications. As these studies were traditionally conducted using paper based media, the cost and time requirement often make the process impractical. Ware proposing a web based system to aid medical researchers in conducting image based Delphi studies for improved clinical guidelines and decision support.

关键词： Guidelines Medical services Biomedical imaging Databases internet Electronic mail Correlation

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Building integrative transportation data base based on remote sensing technology and aplication

Building integrative transportation data base based on remot...

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international conference on Remote Sensing, Environment and Transportation Engineering (RSETE)

作者： Liya Liu Yuelong Su Urban Transport Research Department Institute of Comprehensive Transportation NDRC Beijing China Research Institute of Information Technology Tsinghua University Beijing China

Great changes have already been and are still taking place in Chinese economic and social life since early 90s, which as a result brings significant pressure to the transportation systems of almost all Chinese big cities. By the researching currently, not only traffic signal control systems but also traffic guidance and services systems, are all strategies used in two-dimension. Building integrative transportation data base based on remote sensing technology can construct transport management systems in there-dimension. This paper analyzes how to combine remote sensing technology with transport management, puts forward formation of integrative transport data base and describes its applications in the future.

关键词： Remote sensing Transportation Research and development Buildings image resolution Economics Data mining

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