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4th EURASIP Conference Focused on Video / Image Processing and Multimedia Communications, EC-VIP-MC 2003

作者： Lukac, R. Plataniotis, K.N. Smolka, B. Venetsanopoulos, A.N. Slovak Image Processing Center Jarkova 343 Dobsina049 25 Slovakia Edward S. Rogers Sr. Department of Electrical and Computer Engineering University of Toronto 10 King's College Road TorontoON Canada Department of Automatic Control Silesian University of Technology Akademicka 16 Str. Gliwice44-101 Poland

ISBN: (纸本)9531840547

In this paper, a vector generalization of weighted median optimization approaches is provided. The proposed optimized weighted vector median filters utilize the relationship between standard median filter and vector median filter and also take the advantage of the generalized adaptive optimization algorithms initially developed for weighted median filters. © 2003 Faculty of electrical engineering and Co.

关键词： Adaptive filtering

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Design and implementation of a behavior-based control and learning architecture for mobile robots

Design and implementation of a behavior-based control and le...

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IEEE International Conference on Robotics and Automation (ICRA)

作者： Il Hong Suh Sanghoon Lee Bong Oh Kim Byung Ju Yi Sang Rok Oh Department of Electrical Engineering and Computer Science Hanyang University Seoul South Korea Intelligent System Control Research Center Korea Institute of Science and Technology Seoul South Korea

ISBN: (纸本)0780377362

A behavior-based control and learning architecture is proposed, where reinforcement learning is applied to learn proper associations between stimulus and response by using two types of memory called as short Term Memory and Long Term Memory. In particular, to cope with delayed-reward problem, a knowledge-propagation (KP) method is proposed, where well-designed or well-trained S-R(stimulus-response) associations for low-level sensors are utilized to learn new S-R associations for high-level sensors, in case that those S-R associations require same objective such as obstacle avoidance. To show the validity of our proposed KP method, comparative experiments are performed for the cases that:(1) only a delayed reward is used, (2) some of S-R pairs are preprogrammed, (3) immediate reward is possible, and (4) our KP method is applied.

关键词： Mobile robots Intelligent robots Learning Delay Animals control systems computer architecture Intelligent systems Cognitive robotics Robot sensing systems

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Establishing Lipschitz properties of multivariable algebraic loops with incremental sector nonlinearities

Establishing Lipschitz properties of multivariable algebraic...

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IEEE Conference on Decision and control

作者： G. Grimm A.R. Teel L. Zaccarian Department of Electrical and Computer Engineering University of California Santa Barbara CA USA Department of Electrical and Computer Engineering University of California Santa Barbara CA Dipaimento di Informatica Sistemi e Produzione University of Rome Rome Italy Dipartirnento di Informatica Center for Control Enpineering and Compuwtian Rome Italy

In this paper we give a sufficient condition (in terms of an LMI) for the well-posedness of a feedback interconnection between a linear system and an incrementally sector bounded static nonlinearity. In particular, we prove the global invertibility of the algebraic constraint arising from the feedback interconnection and prove a suitable Lipschitz bound for the arising global inverse function. We also comment on the useful ramifications of the proposed condition on LMI- based anti-windup synthesis methods recently proposed in the literature, wherein possible numerical problems arising from solutions which are "almost" non well-posed are ruled out by enforcing a suitable Lipschitz constant on the inverse function.

关键词： Integrated circuit interconnections Linear systems Sufficient conditions Linearity Nonlinear control systems control systems Frequency Feedback loop Nonlinear systems Nonlinear equations

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Feedback Linearization with Sliding Mode control of Current and Arc Length in GMA W Systems

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IFAC Proceedings Volumes 2003年第11期36卷 541-545页

作者： Hassan Ebrahimirad Mahdi Jalili Kharaajoo M.J. Yazdanpanah Batool Labibi Control & Intelligent processing Center of Excellence Department of Electrical and Computer Engineering University of Tehran P.O. Box 14395/515 Tehran IRAN K.N. Toosi University of Technology Tehran Iran

In this paper a model based nonlinear controller for a Gas Metal Arc Welding (GMAW) system is designed. The controller uses nonlinear state feedback to exactly linearize and decouple the GMAW system. The linearized system is then controlled using model reference sliding mode controllers. The effect of parameter uncertainty over the closed loop system performance is investigated and simulation results show the effectiveness of the proposed controller.

关键词： Nonlinear control feedback linearization model reference sliding mode control Gas Metal Arc Welding system

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Suppressing shock waves on the A1 in The Netherlands-model calibration and model-based predictive control

Suppressing shock waves on the A1 in The Netherlands-model c...

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International Conference on Intelligent Transportation

作者： A. Hegyi D.N. Duy B. De Schutter J. Hellendoorn S.P. Hoogendoorn S. Stramigioli Delft Center for Systems and Control Delft University of Technnology Delft Netherlands Transponation Planning and Traffic Engineering Section Fac. Civil Engineering & Geosciences Delft University of Technnology Delft Netherlands Control Laboratory. EUCE. Fac. of Electrical Engineering Mathematics & Computer Science University of Twente Enschede Netherlands

We now apply the model predictive control (MPC) of speed limits that we have presented in previous publications to a calibrated METANET model of a 19 km stretch of the real-world freeway A1 in The Netherlands. This freeway regularly suffers from shock waves originating mainly from on-ramps, and speed limits are now used to suppress these shock waves. First, we calibrate and validate the extended METANET model with data from the A1 freeway, and we use the Delft OD method to estimate the origin-destination patterns that are needed for the simulation of the destination oriented traffic. Next, we verify from data whether the necessary conditions for applying speed limits against shock waves are satisfied. We show that the MPC controller performs well even under the assumption that the traffic demand is not known on the on-ramps and is known for only a few kilometers upstream and downstream of the controlled stretch. This approach results in an improvement of the total time spent in the network with about 15%.

关键词： Predictive models Shock waves Calibration Predictive control Traffic control Pollution measurement Artificial intelligence Communication system traffic control Optimal control Vehicle dynamics

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Entropy vector median filter

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1st Iberian Conference on Pattern Recognition and Image Analysis, IbPRIA 2003

作者： Lukac, Rastislav Smolka, Bogdan Plataniotis, Konstantinos N. Venetsanopoulos, Anastasios N. Slovak Image Processing Center Jarkova 343 Dobsina049 25 Slovakia Department of Automatic Control Silesian University of Technology 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)3540402179

In this paper, a new adaptive multichannel filter for the detection and removal of impulsive noise, bit errors and outliers in digital color images is provided. The proposed nonlinear filter takes the advantages of the concept of the local entropy contrast and the robust order-statistics theory. The new entropy based vector median is computationally attractive, robust for a wide range of the impulsive noise corruption and significantly improves the signal-detail preservation capability of the standard vector median filter. © Springer-Verlag Berlin Heidelberg 2003.

关键词： Impulse noise

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Suppressing shock waves on the A1 in The Netherlands - Model calibration and model-based predictive control

Suppressing shock waves on the A1 in The Netherlands - Model...

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2003 IEEE International Conference on Intelligent Transportation Systems, ITSC 2003

作者： Hegyi, A. Duy, D.N. De Schutter, B. Hellendoorn, J. Hoogendoorn, S.P. Stramigioli, S. Delft Center for Systems and Control Delft Univ. of Technology Mekelweg 2 Delft2628 CD Netherlands Transportation Planning and Traffic Engineering Section Fac. Civil Eng. and Geosciences Delft Univ. of Technology P.O. Box 5048 Delft2600 GA Netherlands Control Laboratory EL/CE Fac. of Electrical Eng. Mathematics and Computer Science Univ. of Twente P.O. Box 217 Enschede7500 AE Netherlands

ISBN: (纸本)0780381254

关键词： Shock waves

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Generalized entropy vector filters

Generalized entropy vector filters

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IEEE Region 8 International Symposium on Video/Image Processing and Multimedia Communications (EURASIP)

作者： R. Lukac K.N. Plataniotis B. Smolka A.N. Venetsanopoulos Slovak Image Processing Center Dobsina Slovakia Department of Automatic Control Silesian University of Technology Gliwice Poland Edward S. Rogers Sr. Department of Electrical and Computer Engineering University of Toronto Toronto Canada

We provide new adaptive multichannel filtering schemes for the detection and removal of impulsive noise, bit errors and outliers in digital color images. The proposed nonlinear filter is based on the generalized multichannel concept of the local entropy contrast and the robust order-statistics theory. The proposed entropy based directional distance filter is computationally attractive, robust for a wide range of the impulsive noise corruption and significantly improves the signal-detail preservation capability of the standard multichannel filters outputting the lowest ranked vector as the output sample.

关键词： Entropy Color Filtering Noise robustness Smoothing methods Image processing Colored noise Nonlinear filters Working environment noise Strontium

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Generalized adaptive vector sigma filters

Generalized adaptive vector sigma filters

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IEEE International Conference on Multimedia and Expo (ICME)

作者： R. Lukac B. Smolka K.N. Plataniotis A.N. Venetsanopoulos Slovak Image Processing Center Dobsina Slovakia Department of Automatic Control Silesian University of Technology Gliwice Poland Edward S. Rogers Sr. Department of Electrical and Computer Engineering University of Toronto Toronto Canada

In this paper we provide a new filtering scheme for the detection and the removal of impulsive noise in digital color images. The proposed adaptive nonlinear vector filters take the advantages of the robust order-statistic theory, generalized directional distance filter and standard sigma filter concept. The principles of the design are explained in detail. Simulation studies indicate that the proposed method is computationally attractive and is able to achieve excellent balance between the image-detail preservation and the noise attenuation.

关键词： Adaptive filters Color Working environment noise Filtering theory Noise robustness Colored noise Nonlinear filters Image processing Strontium Educational institutions

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Weighted vector median optimization

Weighted vector median optimization

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IEEE Region 8 International Symposium on Video/Image Processing and Multimedia Communications (EURASIP)

作者： R. Lukac K.N. Plataniotis B. Smolka A.N. Venetsanopoulos Slovak Image Processing Center Dobsina Slovakia Edward S. Rogers Sr. Department of Electrical and Computer Engineering University of Toronto Toronto Canada Department of Automatic Control Silesian University of Technology Gliwice Poland

关键词： Adaptive filters Image processing Color Filtering Working environment noise Colored noise Vectors Linear approximation Strontium Educational institutions

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