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26th Danubia-Adria Symposium on Advances in Experimental Mechanics

作者： Aleš, Trinkl Jaromír, Volf Martin, Novák Michal, Rika Czech University of Life Science in Prague Technical Faculty Department of Electrotechnics and Automatization Kamýcká 129 Prague 6 Czech Republic Czech Technical University in Prague Faculty of Mechanical Engineering Department of Control and Instrumental Engineering Technická 4 Prague 6 Czech Republic

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Application of hybrid c-means clustering models in inhomogeneity compensation and MR brain image segmentation

Application of hybrid c-means clustering models in inhomogen...

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作者： Szilágyi, László Szilágyi, Sándor M. Benyó, Balázs Benyó, Zoltán Faculty of Technical and Human Sciences Sapientia - Hungarian Science University of TǍrgu-Mureş Romania Department of Control Engineering and Information Technology Budapest University of Technology and Economics Budapest Hungary

ISBN: (纸本)9783902661494

Intensity inhomogeneity or intensity non-uniformity (INU) is an undesired phenomenon that represents the main obstacle for MR image segmentation and registration methods. Various techniques have been proposed to eliminate or compensate the INU, most of which are embedded into clustering algorithms. This paper proposes a hybrid c-means clustering approach to replace the FCM algorithm found in several existing solutions. The novel clustering model is assisted by a pre-filtering technique for Gaussian and impulse noise elimination, and a smoothening filter that helps the c-means algorithm at the estimation of inhomogeneity as a slowly varying additive or multiplicative noise. The slow variance of the estimated INU is assured by a smoothening filter that performs a context dependent averaging, based on a morphological criterion. The experiments using 2-D synthetic phantoms and real MR images show that the proposed method provides more accurate and more efficient segmentation than the FCM based approach. The produced segmentation and fuzzy membership values can serve as excellent support for 3-D registration and segmentation techniques. © 2009 IFAC.

关键词： Clustering algorithms

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A weighted patient specific electromechanical model of the heart

A weighted patient specific electromechanical model of the h...

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2009 5th International Symposium on Applied Computational Intelligence and Informatics, SACI 2009

作者： Szilágyi, Sándor M. Szilágyi, László Iclanzan, David Benyó, Zoltán Faculty of Technical and Human Sciences Sapientia - Hungarian Science University of Târgu Mures Romania Faculty of Computer Science Babes-Bolyai University of Cluj Napoca Romania Department of Control Engineering and Information Technology Budapest University of Technology and Economics Budapest Hungary

ISBN: (纸本)9781424444786

This paper presents a patient specific deformable heart model that involves the known electric and mechanic properties of the cardiac cells and tissue. The accuracy and efficiency of the algorithm was tested for anisotropic and inhomogeneous 3D domains using ten Tusscher's and Nygen's cardiac cell models. During propagation of depolarization wave, the kinetic, compositional and rotational anisotropy is included in the tissue, organ and torso model. The applied patient specific parameters were determined by an evolutionary computation method. An intensive parameter reduction was performed using the abstract formulation of the searching space. This patient specific parameter representation enables the adjustment of deformable model parameters in real-time. The validation process was performed using measured ECG and ultrasound image records that were compared with simulated signals and shapes using an abstract, parameterized evaluation criterion. ©2009 IEEE.

关键词： Heart

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Remote wireless low cost RT process control using windows PLC by MATLAB/Simulink throw the REX control system

Remote wireless low cost RT process control using windows PL...

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2009 5th IEEE GCC Conference and Exhibition, GCC 2009

作者： Krejcar, Ondrej Konarik, Petr VSB-Technical University of Ostrava Faculty of Electrical Engineering and Computer Science Department of Measurement and Control Centre for Applied Cybernetics 17. listopadu 15 708 33 Ostrava-Poruba Czech Republic VSB-Technical University of Ostrava Faculty of Mechanical Engineering Department of Control System and Instrumentation 17. listopadu 15 708 33 Ostrava-Poruba Czech Republic

ISBN: (纸本)9781424438853

Paper shows direct connection and implementation way of designed control schemas of prepared applications to an industrial WinPLC. Paper deals with industrial realization of feedback control of demanding applications on their control, control algorithms and visualization together with design, implementation and real time control from MATLAB/Simulink Environment. Described is a way to produce a permanent solution in control applications that are fully prepared, designed and implemented directly from MATLAB/Simulink to the target control platform. As a part, the mentioned solution is using a multiplatform control system REX as a bridge between MATLAB and target platforms. These methods allow minimizing costs of development of control of applications, because it produces target permanent realizations in comparison to classical development methods that usually need expensive real time measurement cards and produce only one purpose development solution. As next benefit the application is created for visualization the data from RT database during the measurement and control process. This last benefit produce an interesting data from real control process to give a next reason to use of WinCon solution.

关键词： Visualization

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Noninvasive Continuous Blood Pressure Measurement and GPS Position Monitoring of Patients

Noninvasive Continuous Blood Pressure Measurement and GPS Po...

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IEEE Conference on Vehicular Technology (VTC)

作者： Ondrej Krejcar Zdenek Slanina Jan Stambachr Petr Silber Robert Frischer Department of Measurement and Control Faculty of Electrical Engineering and Computer Science Technical University of Ostrava Ostrava Czech Republic Department of Automation and Computing in Metallurgy Faculty of Metallurgy And Materials Engineering Technical University of Ostrava Ostrava Czech Republic

ISBN: (纸本)9781424425143

Need of blood pressure measurement is usable in wide spectrum of applications from physicians offices to home care applications. Many types of blood pressure measurement devices can be bought in electronics shops. All such devices are measurement devices which need to be in contact with human body (hand or foot mainly). Further they allow only one measurement per several minutes interval (typically 10 minutes). Our goal is to develop a small device for noninvasive continuous measurement of blood pressure. This device must be a small battery powered embedded system which measures a blood pressure during a long time period and sends this information to remote operator's stations. In this station the analysis of receiving video data is made for several types of usage. In current state we develop a small device to scan a video or a set of images with the NIR (Near Infra Red) CCD camera. The video data are transferred by wireless connection to the computer where they are analyzed. The first results provide an indication to be a right way to obtain exact continuous blood pressure information. In the future there exists a way to integrate this blood pressure measurement system to concurrently developed biotelemetric system architecture for patients and physicians called Guardian. For position monitoring in outdoor areas there is developed GPS module which informs about patient location and brings very precise time basis for other measuring modules of Guardian system and time synchronization.

关键词： Blood pressure Biomedical monitoring Position measurement Pressure measurement Global Positioning System Patient monitoring Battery charge measurement Time measurement Humans Foot

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Smartphone, PDA and embedded devices as mobile monitoring stations of biotelemetric system

Smartphone, PDA and embedded devices as mobile monitoring st...

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2009 5th IEEE GCC Conference and Exhibition, GCC 2009

作者： Krejcar, Ondrej Janckulik, Dalibor Martinovic, Jan Department of Measurement Control Centre for Applied Cybernetics Faculty of Electrical Engineering and Computer Science 17. listopadu 15 708 33 Ostrava-Poruba Czech Republic VSB-Technical University of Ostrava Faculty of Electrical Engineering and Computer Science Department of Computer Science 17. listopadu 15 708 33 Ostrava-Poruba Czech Republic

ISBN: (纸本)9781424438853

The main goal of our project is to provide solution which can be used in different areas of health care and which will be available through PDAs (Personal Digital Assistant), web browsers or desktop clients. The realized system deals with an ECG sensor connected to mobile equipment, such as PDA/Embedded, based on Microsoft Windows Mobile operating system. The whole system is based on the architecture of .NET Compact Framework, and Microsoft SQL Server. The project was successfully tested in real environment in cryogenic room (-136°C).

关键词： Electrocardiograms

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Application of Ada Language in a Real-time Database System - A Perspective

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IFAC Proceedings Volumes 2009年第1期42卷 236-241页

作者： Pavel Moryc Jindřich Ĉernohorský Technical University of Ostrava Faculty of Electrical Engineering and Computer Science Department of Measurement and Control Centre for Applied Cybernetics Ostrava Czech Republic

This paper outlines further research possibilities in the field of Real-Time Database Systems. It is based on the previous research accomplished at the technical University of Ostrava, including the V4DB Real-Time Dat...

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Quality assessment of digital television picture based on local feature matching

Quality assessment of digital television picture based on lo...

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International Conference on Digital Signal Processing (DSP)

作者： Dusica Marijan Vladimir Zlokolica Nikola Teslic Vukota Pekovic Faculty of Technical Sciences Computing and Control Department University of Novi Sad Novi Sad Serbia Micronas NIT Novi Sad Serbia

This paper presents a novel, full-reference image quality measurement method for video quality assessment in television systems. Particularly, the proposed metric targets the problem of automatic assessment of digital picture degradations. The performance of proposed algorithm has been evaluated on different image sequences with various distortions of interest. The results show that the proposed scheme for quality assessment outperforms other image quality measures: PSNR, SSIM and VIF in terms of more efficient quality inspection based on local feature matching as well as robustness against various distortions such as luminance or contrast change, negligible picture misalignment, etc.

关键词： Quality assessment Digital TV Image quality Distortion measurement PSNR Fault detection Degradation Signal processing Brightness Inspection

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Architecture, Development and Testing of Home Care Biomedical System

Architecture, Development and Testing of Home Care Biomedica...

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IEEE Conference on Vehicular Technology (VTC)

作者： Ondrej Krejcar Dalibor Janckulik Leona Motalova Centre of Applied Cybernetics Department of Measurement and Control Faculty of Electrical Engineering and Computer Science Technical University of Ostrava Ostrava Czech Republic Department of Measurement and Control Faculty of Electrical Engineering and Computer Science Technical University of Ostrava Ostrava Czech Republic

ISBN: (纸本)9781424425143

The project deal with architecture design, system development and testing of software framework for data management and scheduling of personal sources in home care agencies. Development is started from analyses, over proposal, implementation to resulting testing of application, thereby try cast over whole problems software engineering. System consists of the three main parts PC application, mobile application and database server. All these parts are built on technology Microsoft .NET solutions for desktop and mobile PCs. System works offline, whereas synchronization mobile arrangement with data in database is made only in agency by the help of technology USB, Bluetooth or WiFi. Software layer synchronization administration data is based on technologies ADO .NET and Linq. System will further develop and will base for advancement biomedical science research framework.

关键词： System testing Application software Computer architecture Software testing Databases Project management Software development management Proposals Software engineering Personal communication networks

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Methods of Comparing ECG Reconstruction

Methods of Comparing ECG Reconstruction

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International Conference on BioMedical Engineering and Informatics (BMEI)

作者： Michal Prauzek Marek Penhaker Faculty of Electrical Engineering and Computer Science Department Measurement and Control VSB-Technical University of Ostrava Ostrava Czech Republic

ISBN: (纸本)9781424441327

The paper describes methods of comparing calculated ECG signal with real signal. Five examination methods of ECG-signal reconstruction from reduced system were proposed in this description. These methods prove reconstruction and evaluate results. They are based on statistic methods, nonparametric approaches and autoregressive models.

关键词： Electrocardiography Heart Sampling methods Electric variables measurement Medical diagnostic imaging Biomedical electrodes MATLAB Computer science Statistics Field programmable gate arrays

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