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Restructuring Object-Oriejnted Real-Time Distributed Software For Pipeline Environment 14

Restructuring Object-Oriejnted Real-Time Distributed Softwar...

引用

14th International Conference on Parallel and Distributed Computing Systems, PDCS 2001

作者： Fergany, Tahany A. Sarhan, Amany Computer Science Department University of New Haven West HavenCT06516 United States Department of Computer Science and Automatic Control Faculty of Engineering Tanta University Tanta Egypt

ISBN: (纸本)9781618395740

Distributed objects are increasingly becoming predominant with the widespread use of object-oriented technology. Coupled with object-oriented systems is the heterogeneity of computer systems that are interoperating together to form a large network such as the Internet. Within this distributed heterogeneous environment, objects are the main building blocks that form the communication of the distributed system. In real-time distributed environment, objects must deliver their services within given time constraints. In order to commit to performance constraints, a careful study and analysis of the software design is critical. Therefore, this research work focuses on restructuring distributed Object Oriented software to match the pipeline architecture. This technique provides the designer with a set of alternative solutions and the corresponding resource and communication cost while satisfying the system and computation constraints. The optimal solution that minimizes the system resources and the communication overheads will be also given. A search technique using genetic algorithm is used to scan the search space for the optimal software structure and the set of feasible ones. © (2001) by the International Society for computers and Their Applications All rights reserved.

关键词： Genetic algorithms

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A genetic algorithm for designing H/sub /spl infin// structured specified controllers

A genetic algorithm for designing H/sub /spl infin// structu...

引用

IEEE Conference on control Technology and Applications (CCTA)

作者： I. Kitsios T. Pimenides P. Groumpos Automatic Control Division Electrical and Computer Engineering Department University of Patras Greece

In conventional H/sub /spl infin// optimal output feedback control design, the order of the controller is higher than that of the plant. Thus it is not easy to implement H/sub /spl infin// optimal control in real world engineering problems. The paper tries to bridge the gap between the theoretical H/sub /spl infin// control and practical applications. It proposes a simple genetic algorithm (GA), blended with multi objective characteristics, for the design of a structure specified H/sub /spl infin// sub-optimal controller. Therefore, two examples involving a SISO phase-locked motor speed system with a lead/lag type controller and a MIMO super maneuverable F18/HARV fighter aircraft with a PI-type controller are given to illustrate the applicability of the design. Also in accordance with these examples a comparison study with an existing GA procedure, outlines the effectiveness of the proposed evolutionary scheme.

关键词： Genetic algorithms Algorithm design and analysis Optimal control control systems Output feedback control design Bridges MIMO Aircraft Aerospace control

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Robot navigation by visual local symmetry reflection axes

Robot navigation by visual local symmetry reflection axes

引用

International Conference on Emerging Technologies and Factory Automation (ETFA)

作者： P. Mares A. Grau A.B. Martinez Department of Computer Engineering and Automatic Control (ESAII) Technical University of Catalonia Barcelona Spain

ISBN: (纸本)0780372417

A method for robot navigation is presented. It is based on the detection of the main local reflection symmetry axes in images where straight lines are prevailing such as structured environments where robots are moving. The objective is to maintain the right orientation during navigation and to detect and correct any change in this orientation comparing continuously the symmetry axes between images. The algorithm measures the positions and the lengths of these local symmetry axes and their relative importance by means of an accumulation map of each contributing segment. A definition of symmetry between two segments that allows us to calculate a local symmetry axis between them is also given.

关键词： Navigation Reflection Image segmentation Shape Layout Robotics and automation Machine vision computer vision Robot sensing systems Robot vision systems

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A volterra operator approach to the stability analysis of a class of 2D linear systems 6

A volterra operator approach to the stability analysis of a ...

引用

6th European control Conference, ECC 2001

作者： Dymkov, M. Gaishun, I. Galkowski, K. Rogers, E. Owens, D.H. Institute of Mathematics National Academy of Sciences of Belarus Belarus Institute of Control and Computation Engineering Technical University of Zielona Gora Poland Department of Electronics and Computer Science University of Southampton SouthamptonSO17 1BJ United Kingdom Department of Automatic Control and Systems Engineering University of Sheffield United Kingdom

ISBN: (纸本)9783952417362

Repetitive processes are a distinct class of 2D systems of both practical and theoretical interest. Their essential characteristic is repeated sweeps, termed passes, through a set of dynamics defined over a finite duration with explicit interaction between the outputs, or pass profiles, produced as the process evolves. Experience has shown that these processes cannot be studied/controlled by direct application of existing theory (in all but a few very restrictive special cases). This fact, and the growing list of applications areas, has prompted an on-going research programme into the development of a 'mature' systems theory for these processes for onward translation into reliable generally applicable controller design algorithms. It has long been considered that Volterra operator techniques should have a key role to play in this general area. In this paper, we first present the necessary properties of a Volterra operator representation for the very important sub-class of so-called discrete linear repetitive processes and then use them to develop a characterization of stability in this setting. © 2001 EUCA.

关键词： Linear systems

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Classification of microorganisms using image processing techniques

Classification of microorganisms using image processing tech...

引用

IEEE International Conference on Image Processing

作者： T. Alvarez Y. Martin S. Perez F. Santos F. Tadeo S. Gonzalez J.L. Arribas P. Vega Department of Engineering Science and Automatic Control University of Valladolid Spain Empresa Depuradora de Aguas Residuales Avila Spain Department of Computer Science and Automatic Control University of Sakamanca Spain

This paper presents an approach to the automatic classification of microorganisms based on image-processing techniques. A computer application that processes and classifies the images has been developed. The classification is carried out using a competitive neural network. Its input pattern is evaluated from a frequency analysis of images taken through a microscope. This paper focuses on the application of this technique to the classification of living diatoms.

关键词： Microorganisms Image processing Water pollution Microscopy automatic control computer applications Neural networks Image analysis Algae computer science

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Applications of coordinate logic filters in image analysis and pattern recognition

Applications of coordinate logic filters in image analysis a...

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International Symposium on Image and Signal Processing and Analysis

作者： B.G. Mertzios K. Tsirikolias Automatic Control Systems Laboratory Department of Electrical and Computer Engineering Democritus University of Thrace Xanthi Greece

ISBN: (纸本)9539676940

The paper presents a number of image processing and pattern recognition applications using coordinate logic filters which execute coordinate logic operations among the pixels of the image. These filters are very efficient in various 1D, 2D or higher-dimensional digital signal processing applications, such as noise removal, magnification, opening, closing, skeletonization, coding, edge detection, feature extraction, and fractal modeling. The key issue in the coordinate logic analysis of images is the method of fast successive filtering and managing of the residues. The desired processing is achieved by executing only direct logic operations among the pixels of the given image. Coordinate logic filters can be easily and quickly implemented using logic circuits or cellular automata; this is their primary advantage.

关键词： Image analysis Image edge detection Pixel Logic circuits Image processing Pattern recognition Digital filters Digital signal processing Image coding Feature extraction

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Random walk approach to noise reduction in color images 9th

引用

9th International Conference on computer Analysis of Images and Patterns, CAIP 2001

作者： Smolka, B. Szczepanski, M. Plataniotis, K.N. Venetsanopoulos, A.N. Silesian University of Technology Department of Automatic Control Akademicka 16 Str Gliwice44-101 Poland Edward S. Rogers Sr. Department of Electrical and Computer Engineering University of Toronto 10 King's College Road Toronto Canada

ISBN: (纸本)9783540425137

In this paper we propose a new algorithm of noise reduction in color images. The new technique of image enhancement is capable of reducing impulsive and Gaussian noise and it outperforms the standard methods of noise reduction. In the paper a smoothing operator, based on a random walk model and on a fuzzy similarity measure between pixels connected by a digital self avoiding path is introduced. The efficiency of the proposed method was tested on the test color image using the objective image quality measures and the results show that the new method outperforms standard noise reduction algorithms. © Springer-Verlag Berlin Heidelberg 2001.

关键词： Noise abatement

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Geodesic paths approach to color image enhancement

Geodesic paths approach to color image enhancement

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IWCIA 2001, 8th International workshop on Combinatorial Image Analysis

作者： Szczepanski, M. Smolka, B. Slusarczyk, D. Plataniotis, K.N. Venetsanopoulos, A.N. Department of Automatic Control Silesian University of Technology Akademicka 16 Str 44-101 Gliwice Poland Edward S. Rogers Sr. Department of Electrical and Computer Engineering University of Toronto 10 King's College Road Toronto Canada

New filter class for multichannel image processing is introduced and analyzed. The new technique of image enhancement is capable of reducing impulsive and Gaussian noise and it significantly outperforms the standard methods of noise reduction. In the paper a smoothing operator, based on a random walk model and a fuzzy similarity measure between pixels connected by a digital geodesic path is introduced. The efficiency of the proposed method was tested on the standard color images using the objective image quality measures. Obtained results show that the new method not only outperforms standard noise reduction algorithms, but has some interesting features useful for segmentation of noisy color images. © 2001 Published by Elsevier Science B.V.

关键词： Geodesy

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Fast modified vector median filter 9th

引用

9th International Conference on computer Analysis of Images and Patterns, CAIP 2001

ISBN: (纸本)9783540425137

A new filtering approach designed to eliminate impulsive noise in color images, while preserving fine image details is presented in this paper. The computational complexity of the new filter is signif- icantly lower than that of the Vector Median Filter. The comparison shows that the new filter outperforms the VMF, as well as other standard procedures used in color image processing, when the impulse noise is to be eliminated. © Springer-Verlag Berlin Heidelberg 2001.

关键词： Impulse noise

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Object-oriented modeling for remote monitoring of manufacturing processes

Object-oriented modeling for remote monitoring of manufactur...

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International Conference on Emerging Technologies and Factory Automation (ETFA)

作者： M. Marcos I. Calvo D. Orive I. Sarachaga J.M. Fuertes P. Marti R. Villa S. Buzoianu Department of Automatic Control and Systems Engineering University of Basque Country (UPV-EHU) Bilbao Spain Dept. of Automatic Control and Systems Engineering University of the Basque Country Bilbao SPAIN Dept. of Automatic Control and Computer Engineering Technical University of Catalonia Barcelona SPAIN

ISBN: (纸本)0780372417

Deals with the use of object oriented technologies in the modeling of industrial plants that have to be remotely monitored and/or controlled. The main goal is to propose a design methodology for obtaining the model of the so-called Virtual Plant, that a remote and certified user will use to access the real plant for performing command actions and/or monitoring. The type of applications and systems targeted must have autonomous behavior and be interconnected and accessible. Reliability, maintainability and flexibility are also required goals, as well as a high rate of reusability of the applications. The methodology has been applied to the remote process monitoring and control of manufacturing processes. The Virtual Plant Model is, in fact, the part of the plant that can be accessed by a certified remote client and thus it can be constituted by a set of sub-models, as many as different types of clients. The Virtual Plant resides inside the Application Server who is responsible of communicating with the cell controller and sends the image of the actual plant state (the Virtual Plant) as required by the remote client (monitoring) or sends the client commands to the cell controller.

关键词： Object oriented modeling Remote monitoring Manufacturing processes automatic control Internet Process control Systems engineering and theory Paper technology Industrial plants computerized monitoring

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