The main objective of this work is the design and implementation of a hierarchical control solution for chemical and petrochemical processes, namely the control and optimization of the ethylene pyrolysis reactor, the ...
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A methodology for designing control systems for real time applications is presented. It is proposed to have a first stage of assisted design of nominal systems with simulation based verification of the achieved perfor...
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In this paper we present a means of visually representing information associated with the state and functionality of the myocardium in the left ventricular chamber of the heart. Starting from segmentation contours whi...
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ISBN:
(纸本)9780889868243
In this paper we present a means of visually representing information associated with the state and functionality of the myocardium in the left ventricular chamber of the heart. Starting from segmentation contours which outline the endocardium and the epicardium for several slices and over several phases of motion and stress levels, we construct two surfaces which approximate the shape of the left ventricular wall. Several parameters, such as the thickness, thickening or motion speed of the wall are computed from the contours, and the resulting values are represented on the outer, epicardium surface using methods such as color encoding or so-called "stress bands". The distribution of colors on the outer surface is analogous to the distribution of parameter values along the left ventricular wall. A visual inspection of said colors, depending on the particularities of the analyzed data set, may render visible anomalies or dyssynchronies, or otherwise offer relevant indications on the behavior of the wall across multiple phases of the contraction-dilation cycle and for several levels of strain. The approaches described are meant to provide an alternative and intuitive visual aid in the diagnosis and treatment of cardiovascular diseases.
This paper addresses the development of an automatic segmentation technique for detecting cell nuclei. The technique uses a new approach for segmenting nuclei in images taken from tissues with colon carcinoma. The seg...
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In this paper we present novel algorithmic solutions for several resource processing and data transfer multicriteria optimization problems. The results of most of the presented techniques are strategies which solve th...
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In the paper is presented the brief history of research conducted in Poland (at AGH University) in the area of image processing, analysis and recognition. The history is connected with changes of the technology used f...
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An important issue in the analysis of two-dimensional electrophoresis images is the detection and quantification of protein spots. The main challenges in the segmentation of 2DGE images are to separate overlapping pro...
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By continuing to use fossil fuels we are bound to pollute the atmosphere, and consequently, unwanted greenhouse and climate change effects will come to dominate every part of the earth. Wind power energy represents an...
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Digital image copyrights and image authentication draw a great attention specially in critical image communications. This paper presents a proposal for a new encoder-decoder, which we call SecEncoDeco, for securing JP...
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Digital image copyrights and image authentication draw a great attention specially in critical image communications. This paper presents a proposal for a new encoder-decoder, which we call SecEncoDeco, for securing JPEG images. An extra stage of security is embedded in the traditional JPEG codec. This security stage uses the Secure Hill cipher technique. This encryption technique has many advantages over the traditional Hill cipher. The Safe Time of the Secure Hill cipher is deduced and presented in detail. Implementation of the proposed method is built based on MATLAB. Complete evaluation for the proposed codec is performed which indicates the effectiveness of the proposed secure codec for image copyright protection.
The main objective of this work is the design and implementation of a hierarchical control solution for chemical and petrochemical processes, namely the control and optimization of the ethylene pyrolysis reactor, the ...
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The main objective of this work is the design and implementation of a hierarchical control solution for chemical and petrochemical processes, namely the control and optimization of the ethylene pyrolysis reactor, the key-installation in the petrochemical industry. The hierarchical control structures are organized on two levels of automation. The execution or control level, on the one hand, has to fulfill two important tasks: the data acquisition from the physical plant and the regulation of the major parameters of the process. The supervisory level, on the other hand, is referred to the optimization of the production.
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