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检索条件"任意字段=International Conference on Signal-Image Technology and Internet-Based Systems"

共 6215 条记录，以下是4861-4870 订阅

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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

引用

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...

引用

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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AER SPIKE-PROCESSING FILTER SIMULATOR: Implementation of an AER Simulator based on Cellular Automata

AER SPIKE-PROCESSING FILTER SIMULATOR: Implementation of an ...

引用

international conference on signal Processing and Multimedia Applications

作者： Manuel Rivas-Perez A. Linares-Barranco A. Jimenez-Fernandez A. Civit G. Jimenez Robotic and Technology of Computers Lab. University of Seville

ISBN: (纸本)9789898425720

Spike-based systems are neuro-inspired circuits implementations traditionally used for sensory systems or sensor signal processing. Address-Event-Representation (AER) is a neuromorphic communication protocol for transferring asynchronous events between VLSI spike-based chips. These neuro-inspired implementations allow developing complex, multilayer, multichip neuromorphic systems and have been used to design sensor chips, such as retinas and cochlea, processing chips, e.g. filters, and learning chips. Furthermore, Cellular Automata (CA) is a bio-inspired processing model for problem solving. This approach divides the processing synchronous cells which change their states at the same time in order to get the solution. This paper presents a software simulator able to gather several spike-based elements into the same workspace in order to test a CA architecture based on AER before a hardware implementation. Furthermore this simulator produces VHDL for testing the AER-CA into the FPGA of the USB-AER AER-tool.

关键词： Spiking neurons Address-event-representation Usb-aer Vhdl Fpga image filtering Neuro-inspired Cellular automata

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Experiment study of real-time recognition of weeds in cotton field based on DSP

Experiment study of real-time recognition of weeds in cotton...

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international conference on New technology of Agricultural Engineering (ICAE)

作者： Yin Dongfu Shuren Chen Pei Wenchao Zhou Xiang Chen Zujue Key Laboratory of Modern Agricultural Equipment and Technology Ministry of Education Jiangsu China Key Laboratory of Modern Agricultural Equipment and Technology Ministry of Education & Jiangsu Province Key Laboratory of High Technology Research of Agricultural Equipment and Intelligence Jiangsu University Zhenjiang China School of Computer Science and Telecommunication Engineering of Jiangsu University Zhenjiang China

Considering of large amount of data and complexity of calculating in recognition of weeds from cotton fields, the research on real-time recognition of weeds from cotton fields was developed based on DSP chip TMS320DM642. The structure and feature of TMS320DM642 had been analyzed. Also several image processing procedures, including image segmentation, image filter processing, division of spray area and weed recognition whose rate is 86.7% had been studied. Because of quick image processing of DSP, real-time recognition of weed in cotton fields was increased. The average time of processing an image is 976.3ms, which can make the movement speed of weeds on the platform faster than 0.2m/s. The tests showed that real-time recognition system can meet the requirements of precise spraying on target in cotton fields.

关键词： Cotton Real time systems image color analysis image segmentation Streaming media Spraying Digital signal processing

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Recognition assisted dynamic surveillance system based on OSGi and OpenCV

Recognition assisted dynamic surveillance system based on OS...

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international conference on Advanced Communication technology (ICACT)

作者： Jenq-Shiou Leu Wei-Hsiang Lin Min-Chieh Yu Hung-Jie Tzeng Department of Electronic Engineering National Taiwan University of Science and Technology Taipei Taiwan

Thanks to the internet development, a surveillance user can monitor the distant events via a browser on a computer. These events can be even viewed on a mobile phone with the assistance from modern mobile networks. Besides, two well-known platforms - OSGi and OpenCV are widely used for application construction. OSGi is constructed to provide a service platform with high application interoperability while OpenCV is used to provide a bundle of application programming interfaces (APIs) about image processing. In this paper, we design a recognition assisted surveillance system based on OSGi service platform and the OpenCV development platform. The system features dynamic monitoring by use of a camera mounted on an embedded system which is carried by a robot and a J2ME based viewer/commander program on a mobile phone. The successful implementation removes the barrier that hinders the user from clear recognizing the objects in the limited screen of mobile phones.

关键词： Surveillance Mobile communication Cameras Mobile handsets Robot vision systems Videos image recognition

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Fire Detection based on image Processing in Coal Mine

Fire Detection Based on Image Processing in Coal Mine

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2011 international conference on internet Computing and Information Services （ICICIS 2011）

作者： Wang Yuanbin Ma Xianmin Xi'an University of Science & Technology

Fire detection is very important in safety area, and at all times it is a difficult problem in coal mine. In this paper, a real-time fire-detector algorithm is proposed. In early stage there is no evident flame, and the temperature is low, the visible light is scarce, so the signal is difficult to achieve by ordinary color CCD. Here infrared CCD is employed as a probe, and obtained infrared image is input the computer, then fire recognition is determined based on image processing. Firstly, the grey scale binary image is partitioned by entropy threshold method and then smoothed by Median filtering. Then significant characteristics of flame are extracted and after normalization the foregoing data are input neutral network for recognition. All of the above clues are combined to reach a final decision. Experiment results show that the proposed method is successful in detecting fire or flames. In addition, it reduces the false alarms remarkably. It is also shown that the method works in a variety of conditions. The system has high validity and accuracy.

关键词： image CCD Fire Detection based on image Processing in Coal Mine

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Appropriate twinkling frequency and inter-sources distance selection in SSVEP-based HCI systems

Appropriate twinkling frequency and inter-sources distance s...

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IEEE international conference on signal and image Processing Applications (ICSIPA)

作者： Seyed Navid Resalat Seyed Kamaledin Setarehdan Fardin Afdideh Ali Heidarnejad Control and Intelligent Processing Center of Excellence School of Electrical and Computer Engineering College of Engineering University of Tehran Tehran Iran Biomedical Signal and Image Processing Laboratory (BiSIPL) School of Electrical Engineering College of Engineering Sharif University of Technology Tehran Iran

Steady-State Visual Evoked Potentials (SSVEPs) are one of the most important EEG signals used in Human Computer Interface (HCI) systems. These signals are generated by Looking at flickering external light sources stimulating the central part of the retina. By increasing the number of external light sources, detection of the corresponding SSVEPs from the recorded EEG signal becomes more complicated. On the other hand, the ratio of the sensitivity to specificity in high-speed classifiers becomes more significant. This study presents the effect of the twinkling frequencies and the inter-sources distance of two Light Emitting Diodes (LEDs) on the ratio of the sensitivity to specificity of the two classes. The features used for signal classification is the amplitude of the main frequencies in the spectrum of each frequency pairs that is simply classified by the Max classifier. The purpose of this is to find the best twinkling frequencies and the best inter-sources distance among a set of predefined values when there are only two light sources in order to nearly equalize the sensitivity and the specificity. For this aim, seven different frequency pairs of LEDs in five distinct inter-sources distances are examined and it is shown that the best frequency pair is 10 and 15 Hz with inter-sources distances of 24 or 44 cm.

关键词： Light sources Sensitivity Light emitting diodes Electroencephalography Educational institutions Steady-state Visualization

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Laboratory test results for adaptive optics using image-based wavefront sensing for remote sensing

Laboratory test results for adaptive optics using image-base...

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international conference on Space Optical systems and Applications (ICSOS)

作者： Norihide Miyamura Research Center of Advanced Science and Technology University of Tokyo Tokyo Japan

Large aperture optical system is required for high resolution and high signal to nose ratio remote sensing observations. In this case, adaptive optics is used to compensate the wavefront aberration generated by the misalignment or the thermal deformation of the optical elements. We use a liquid crystal on silicon spatial light modulator (LCOS-SLM) for the optical wavefront control, and image-based wavefront sensing which realize simple hardware architecture. For image-based sensing, a priori information is required in addition to the acquired images. We use phase diversity (PD) wavefront sensing method which applies a priori information called PD to the optics. By using PDs and acquired images, we can estimate arbitrary wavefront aberration. In this case, the sensitivity of the acquired image to the aberration mode depends on the applied PD. We use LCOS-SLM to apply the optimal set of PDs. We constructed adaptive optics system testbed using LCOS-SLM and USB camera. In this system, we used a Shack-Hartmann wavefront sensor (SHWS) to compare the estimated wavefront aberration with the actual wavefront measured by the SHWS. The laboratory test results show that the proposed system improves the optical performance of the remote sensing sensors.

关键词： Optical imaging Adaptive optics Accuracy Polynomials Optical sensors Estimation Lenses

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