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检索条件"任意字段=3rd International Conference on Signal and Data Processing, ICSDP 2023"

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Software optimization of the Jpeg2000 algorithm on a VLIW CPU core for system-on-chip implementation

Software optimization of the Jpeg2000 algorithm on a VLIW CP...

引用

3rd IASTED international conference on Circuits, signals, and Systems

作者： Menichelli, F Olivieri, M Smorfa, S Zaccardini, I Univ Roma La Sapienza Dept Elect Engn I-00184 Rome Italy

ISBN: (纸本)0889865078

This work describes the optimization of a Jpeg2000 encoder implementation on an embedded VLIW CPU core. We demonstrate that specifically designed source code leads to significant performance improvements by carefully exploiting the hardware resources of the underlying processor architecture. Conversely, we show that the generic Jpeg2000 source code yields performance results comparable with those obtained on a single-issue RISC CPU (ARM). The dedicated algorithm implementation, with over 40% savings in the total clock cycle count, demonstrates the effectiveness of VLIW CPU cores in high-performance, low-cost and low-power embedded computing platform.

关键词： image processing Jpeg2000 software optimization VLIW architecture data-cache optimization Systems-on-Chips

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data dissemination with resource management in wireless sensor networks

Data dissemination with resource management in wireless sens...

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3rd IASTED international conference on Communications and Computer Networks

作者： Kimura, N Jolly, V Latifi, S Univ Nevada Dept Elect & Comp Engn Las Vegas NV 89154 USA

ISBN: (纸本)0889865442

Wireless sensor nodes can be mobile within a chosen area and communicate with neighboring nodes in the bounds of protocol limits. Since communications among all network components in sensor networks are wireless, a peer-to-peer protocol is employed between two nodes. Among many concerns about design of sensor networks are growing bandwidth demands, speed of information retrieval and transporting bytes over the wireless networks to provide a quality service for the diverse requirements of the users, such as signal processing or multimedia applications. Although traditional routing protocols ignore power management issues for sensor networks, design and implementation of an efficient energy based routing is in the core interest. In this paper, we discuss the current power management protocols, and propose an energy restrained information dissemination scheme. Experimental analysis and comparison with related work show that using the proposed scheme we can save substantial energy as compared to the prior methods.

关键词： wireless sensor networks energy efficient data distribution battery threshold

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Automated detection and identification of persons in video using a coarse 3-D head model and multiple texture maps

Automated detection and identification of persons in video u...

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3rd international conference on Image and Video Retrieval (CIVR 2004)

作者： Everingham, M Zisserman, A Univ Oxford Dept Engn Sci Visual Geometry Grp Oxford OX1 3PJ England

Progress in the automatic detection and identification of humans in video, given a minimal number of labelled faces as training data, is described. This is an extremely challenging problem owing to the many sources of variation in a person's imaged appearance: pose variation, scale, facial expression, illumination, partial occlusion, motion blur, etc. The method developed in this work combines approaches from computer vision, for detection and pose estimation, with those from machine learning for classification. A 'generative' model of a person's head is defined consisting of a coarse 3-D model and multiple texture maps. This allows faces to be rendered with a variety of facial expressions and at poses differing from those of the training data. It is shown that the identity of a target face can then be determined by first proposing faces with similar pose, and then classifying the target face as one of the proposed faces or not. Furthermore, the texture maps of the model can be automatically updated as new poses and expressions are detected. Results of detecting three characters in a TV situation comedy are demonstrated.

关键词： Image analysis

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Development and realization of the open fault diagnosis system based on XPE

Development and realization of the open fault diagnosis syst...

引用

3rd international conference on Mechatronics and Information Technology (ICMIT 05)

作者： Deng, H Wang, TY He, HL Xu, YG Zeng, JX Tianjin Univ Sch Mech Engn Tianjin 300072 Peoples R China

ISBN: (纸本)0819460737

To make the complex mechanical equipment work in good service, the technology for realizing an embedded open system is introduced systematically, including open hardware configuration, customized embedded operation system and open software structure. The ETX technology is adopted in this system, integrating the CPU main-board functions, and achieving the quick, real-time signal acquisition and intelligent data analysis with applying DSP and CPLD data acquisition card. Under the open configuration, the signal bus mode such as PCI, ISA and PC/104 can be selected and the styles of the signals can be chosen too. In addition, through customizing XPE system, adopting the EWF (Enhanced Write Filter), and realizing the open system authentically, the stability of the system is enhanced. Multi-thread and multi-task programming techniques are adopted in the software programming process. Interconnecting with the remote fault diagnosis center via the net interface, cooperative diagnosis is conducted and the intelligent degree of the fault diagnosis is improved.

关键词： Fault Diagnosis internet embedded system data acquisition signal processing XPE ETX ODBC Portable Equipment Condition Monitoring

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A distributed monitoring system for spinning-machine's spindle

A distributed monitoring system for spinning-machine's spind...

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3rd international conference on Mechatronics and Information Technology (ICMIT 05)

作者： Hong, Y Ping, Y Jian, PZ Univ Elect Sci & Technol China Sch Mech Engn Chengdu 610054 Sichuan Peoples R China

ISBN: (纸本)0819460737

As a key unit with textile coil process technology, spinning-machine's spindles composes of a braking switch, a three-phase current motor, rolling bearings and a rotary cup. Aiming at on line monitoring and fault diagnosis, a distributed monitoring system was proposed for real-time data collection and high-speed transmission. In this system, an IPC worked as an upper deck computer and many single chip processors served as bottom controllers that working status data collection and transmission can be conveniently conducted. With the features of bulk processing data and large quantities of controlled nodal points in a workshop condition, the distributed monitoring system was developed with adoption of particular approaches such as a distributed configuration with PCI bus for real time data collection and highspeed transmission, logic compression algorithm for data processing, etc. Therefore this system realizes reliable and high-speed bulk data collection, transmission and processing to meet needs of real-time monitor and control of spindle units.

关键词： spinning-machine's spindle distributed monitoring system data collection data transmission

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The application of windows multithread in high-speed continual large-capacity data acquisition system - art. no. 60410L

The application of windows multithread in high-speed continu...

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3rd international conference on Mechatronics and Information Technology (ICMIT 05)

作者： Wang, TY Zeng, JX He, HL Deng, H Tianjin Univ Mech Engn Coll Tianjin 300072 Peoples R China

ISBN: (纸本)0819460737

Three modes of Windows Multithread techniques in data acquisition system are explored in this paper. In the first mode, data acquisition is in one thread while the processing and display of data and the large-capacity data saving share another thread. In the second mode, data acquisition and the data processing and display are in one thread, and the large-capacity data saving in another thread. In the third mode, double level buffer queue technology is added based on the first mode technique. Experiments on the data acquisition system reveal that the third mode is the optimal alternative. It fully utilizes the capacity of data acquisition card and makes access to high-speed continual data acquisition and large-capacity data saving. The monitoring system which adopts the third mode has been developed and applied to some urban waterworks in shanghai which has been in good mode during the past two years and saved a vast sum of costs on system maintenance and monitoring.

关键词： multithread data acquisition condition monitoring

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A new data compressing method based on a new non-contact measuring system

A new data compressing method based on a new non-contact mea...

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3rd international conference on Mechatronics and Information Technology (ICMIT 05)

作者： Wang, FH Chen, CK S China Univ Technol Inst Engn Mech Guangzhou Guangdong Peoples R China

ISBN: (纸本)0819460737

At first, the paper introduces a non-contact measuring system with a new proximity sensor researched by South China University of Technology and its constitutions. The measuring system not only has high measuring precision but also could obtain 3D coordinates and normal vectors compared with common measuring systems. The paper puts forward two new data-compressing algorithms according to its measuring characteristics, the one is based on dichotomy and the other is based on quadrangle. They are all own the advantages of simple theories, high calculating speed and large compressing ratio. The former is fit to deal with smooth measured surface with less measuring points. The later can do data compressing according to surface varying current which is fit for compressing scanning data of complex surface especially;at the same time, it can homogenize measuring data and improve data processing speed and nicety.

关键词： reverse engineering proximity sensor data compressing algorithm curvature

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Study on open equipment condition monitoring and fault diagnosis system based on internet

Study on open equipment condition monitoring and fault diagn...

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3rd international conference on Mechatronics and Information Technology (ICMIT 05)

作者： He, HL Wang, TY Deng, H Zeng, JX Wang, GF Rao, J Tianjin Univ Sch Mech Engn Tianjin 300072 Peoples R China

ISBN: (纸本)0819460737

An open condition-monitoring system combined C/S (Client/Server) with B/S (Brower/Server) pattern was introduced. It consists of three parts of software: SE (Server-Terminal), ADE ( Analysis-Diagnosis-Tenninal) and DAE (data-Acquisition-Terminal). SE can monitor every connection request from ADE or DAE user and determinate whether ADE or DAE can be run on client's PC. As a result, the system security is improved in a sense. Additionally, the system hardware part comprises two kinds of terminal portable instruments: DASOC(data-acquisition system on chip based-on the Cygnal MCU) and DSAI(dynamic signal analysis instrument based on an embedded OS:XPE). DASOC and DSAI can realize data-acquisition, signal analysis and data-transmission based-on internet. The system structure mode has been applied to a certain power plant's enterprise information network in Tianjin. Results show that the system is successful.

关键词： condition-monitoring fault-diagnosis internet data-acquisition signal-analysis SOC XPE

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Highest probability data association and particle filtering for target tracking in clutter - art. no. 60412P

Highest probability data association and particle filtering ...

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3rd international conference on Mechatronics and Information Technology (ICMIT 05)

作者： Song, TL Kim, DS Hanyang Univ Dept Control & Instrumentat Engn Ansan Gyoenggi Do South Korea

ISBN: (纸本)0819460737

There proposed a new method of data association called highest probability data association (HPDA) combined with particle filtering and applied to passive sonar tracking in clutter. The HPDA method evaluated the probabilities of one-to-one assignments of measurement-to-track. All of the bearing measurements at the present sampling instance were lined up in the order of signal strength. The measurement with the highest probability was selected to be target-originated and the measurement was used for probabilistic weight update of particle filtering. The proposed HPDA algorithm can be easily extended to multi-target tracking problems. It can be used to avoid track coalescence phenomenon that prevails when several tracks move very close together.

关键词： Tracking (position)

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Some applications of intelligent systems in medicine

Some applications of intelligent systems in medicine

引用

international conference on Computational Cybernetics (ICCC)

作者： V. Podgorelec T.W. Druzovec Institute of Informatics University of Maribor Maribor Slovenia

In this paper some applications of intelligent systems are presented. In spite of all knowledge-based technologies, which have been proposed recently, the main driving power of "intelligent" approaches is still (and even increasingly) huge computational power of modern information technology, that is used to process vast amounts of data. Two main technologies of intelligent systems in medicine, both based on data processing and search, are thus optimization and machine learning. They are used for different kinds of medical problems: data mining, diagnosing, medical imaging and signal processing, planning and scheduling, etc. In the paper we summarize some of the most evident applications of this kind.

关键词： Intelligent systems Computational intelligence Biomedical imaging Medical diagnostic imaging Learning systems Information technology data processing Machine learning data mining Biomedical signal processing

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