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 worl...
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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.
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 effic...
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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.
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 ...
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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 t...
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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 m...
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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 classific...
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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.
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 dur...
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In this paper, a new approach to the problem of impulsive noise reduction for color images is presented. The new image filtering technique is based on the maximization of the similarities between pixels in a predefine...
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ISBN:
(纸本)9539676940
In this paper, a new approach to the problem of impulsive noise reduction for color images is presented. The new image filtering technique is based on the maximization of the similarities between pixels in a predefined filtering window. The new method filters out the noise component, while adapting itself to the local image structures. In this way, the proposed algorithm is able to eliminate impulsive noise, while preserving edges and fine image details. Since the algorithm can be considered as a vector median filter driven by fuzzy membership functions, it is fast and computationally efficient. Experimental results indicate that the proposed filter outperforms other commonly used algorithms for impulsive noise reduction in color images.
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 lower than that of the ...
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ISBN:
(纸本)0780367154
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 lower than that of the vector median. 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.
In this paper, design of a 3-degree-of-freedom mobile robot with three caster wheels is performed. Initially, kinematic modeling and singularity analysis of the mobile robot is performed. It is found that the singular...
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In this paper, design of a 3-degree-of-freedom mobile robot with three caster wheels is performed. Initially, kinematic modeling and singularity analysis of the mobile robot is performed. It is found that the singularity can be avoided when the robot has more than two wheels on which two active joints are located. Optimal kinematic parameters of mobile robots with three active joint variables and with four active joint variables are obtained and compared with respect to kinematic isotropic index of the Jacobian matrix of the mobile robot which is functions of the wheel radius and the length of steering link.
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