Dominik Sankowski

Lodz University of Technology

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Krzysztof Grudzień

Lodz University of Technology

Andrzej Romanowski

Lodz University of Technology

Robert Banasiak

Lodz University of Technology

Zbigniew Chaniecki

Lodz University of Technology

Volodymyr Mosorov

Lodz University of Technology

Anna Fabijańska

Lodz University of Technology

Jacek Nowakowski

STMicroelectronics (France)

Radosław Wajman

Lodz University of Technology

Marcin Bąkała

Lodz University of Technology

Piotr Ostalczyk

Lodz University of Technology

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Lodz University of Technology

119

University of Łódź

AGH University of Krakow

Centrum Badań i Innowacji Pro-Akademia

Warsaw University of Life Sciences

Institute of Computer Science

Warsaw University of Technology

Jagiellonian University

Wrocław University of Science and Technology

Częstochowa University of Technology

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Spatial imaging with 3D capacitance measurements

Measurement Science and Technology (2007)

Radosław Wajman Robert Banasiak Łukasz Mazurkiewicz T. Dyakowski Dominik Sankowski

The authors unintentionally omitted to mention that parallel work on 3D ECT has been developed by Warsito and Fan (2003) but using the artificial neural networks to 3D image reconstruction (where our group concentrated on algebraic methods) and that the rectangular shape of electrodes was also used by Warsito and Fan (2003) but in a twin-plane sensor (where our group used three or more planes).

Electrical capacitance tomography

10.1088/0957-0233/18/11/c01

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Citations (4)

Analysis and simulation of novel hexagonal electrode electrical capacitance tomography sensor

Kostadin Brandisky Dominik Sankowski Robert Banasiak

The present paper proposes a new design of 4-layer 32 electrode cylindrical Electrical Capacitance Tomography (ECT) sensor. The novelty is the proposed hexagonal shape of the electrodes, which ensures more uniform sensitivity in the imaging area. The new sensor is analyzed using Finite Element Method and its sensitivity maps are calculated. It is shown that the new sensor will provide more uniform sensitivity in the axial direction than the commonly used rectangular shape electrode sensors.

Electrical capacitance tomography

10.1049/cp.2011.0077

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Citations (2)

Oddziaływanie ciekłych stopów aluminium z powierzchnią form ceramicznych na spoiwach krzemianowych

Archiwum Technologii Maszyn i Automatyzacji (2001)

R. Haratym J. Senkara Dominik Sankowski

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OCENA METROLOGICZNA SYSTEMU POMIAROWEGO DLA POTRZEB WYZNACZANIA UDZIAŁU FAZ W PRZEPŁYWIE MIESZANIN GAZ-CIECZ METODĄ TOMOGRAFII POJEMNOŚCIOWEJ 3D

Informatyka Automatyka Pomiary w Gospodarce i Ochronie Środowiska (2013)

Radosław Wajman H. Fidos Paweł Fiderek Tomasz Jaworski Jacek Nowakowski

Przemysłowe systemy diagnostyki i monitorowania potrzebują nowych narzędzi oferujących możliwości nieinwazyjnej obserwacji i analizy procesów przepływów dwufazowych mieszanin gaz-ciecz. Opracowany system pomiarowy dedykowany jest dla potrzeb nieinwazyjnego wyznaczania procentowego udziału faz oraz identyfikacji struktur w przepływach dwufazowych w rurociągach pionowych i poziomych. Artykuł prezentuje wybrane rezultaty prac badawczych, w wyniku, których dokonano oceny własności metrologicznych prototypowego systemu trójwymiarowej tomografii pojemnościowej. Prace badawcze obejmowały między innymi: zagadnienie optymalizacji struktury czujnika ECT, a także metrologiczną ocenę dokładności rekonstrukcji obrazu oraz wyznaczania procentowego udziału faz w porównaniu z innymi metodami. W wyniku przeprowadzonej analizy wykazano dużą przydatność systemu 3D ECT do nieinwazyjnego, szybkiego diagnozowania dynamicznych procesów przepływowych.

10.35784/iapgos.1463

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ECT sensor optimization based on RSM and GA

COMPEL The International Journal for Computation and Mathematics in Electrical and Electronic Engineering (2012)

Kostadin Brandisky Dominik Sankowski Robert Banasiak Ivaylo Dolapchiev

Purpose The purpose of this paper is to consider the optimization of an 8‐electrode cylindrical electrical capacitance tomography (ECT) sensor. The aim is to obtain maximum uniformity and value of the sensitivity distribution of the sensor, while keeping the mutual capacitances between the electrodes above a predefined level. Design/methodology/approach The optimization methods that have been used are response surface methodology, genetic algorithm and a combination of both. Findings As results, optimum dimensions for the gap, mounting pipe, shield and insulation are determined, which ensure more uniform distribution of sensitivity in the sensing area. Originality/value The optimization strategies used – RSM and the combined RSM+GA – make the optimization of ECT sensors feasible. The results show the effectiveness of the RSM+GA strategy which could also be used for optimization of 3D multilayer ECT sensors.

Electrical capacitance tomography

10.1108/03321641211209753

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Citations (13)

The Concept of the Modularized Subsystem Performing Mobile Platform Navigation Tasks

Image Processing & Communications (2012)

Adam Wulkiewicz Maciej Łaski Sylwester Błaszczyk Piotr Duch Rafał Jachowicz

Abstract Robotic vehicles autonomy is the subject of many researches performed by various institutions. There is growing tendency to conduct research in the field of autonomous mobile units, unmanned vehicles and robots moving without operator supervision. Authors of this article presents the concept of the modularized subsystem implementing the functionality of the mobile platform navigation in an unknown environment. The concept has been implemented in the real mobile robot.

Mobile Robot Navigation

10.2478/v10248-012-0040-0

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Noise adaptive switching median-based filter for impulse noise removal from extremely corrupted images

IET Image Processing (2011)

Anna Fabijańska Dominik Sankowski

In this study an approach to impulse noise removal is presented. The introduced algorithm is a switching filter which identifies the noisy pixels and then corrects them by using median filter. In order to identify pixels corrupted by noise an analysis of local intensity extrema is applied. Comprehensive analysis of the algorithm performance [in terms of peak signal-to-noise ratio (PSNR) and Structural SIMilarity (SSIM) index] is presented. Results obtained on wide range of noise corruption (up to 98%) are shown and discussed. Moreover, comparison with well-established methods for impulse noise removal is provided. Presented results reveal that the proposed algorithm outperforms other approaches to impulse noise removal and its performance is close to ideal switching median filter. For high noise densities, the method correctly detects up to 100% of noisy pixels.

Impulse noise

Salt-and-pepper noise

Value noise

Gradient noise

Maxima and minima

10.1049/iet-ipr.2009.0178

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Citations (87)

Acta Innovations (2019)

Ewa Kochańska Ryszard Gałczyński Andrzej Klimek Aleksandra Kowalska Robert Banasiak

The tasks "Creation of the English versions of the Acta Innovations articles", "Selection & contracting of the renowned foreign reviewers for the assessment of received manuscripts", "Acta Innovations digitalization in order to provide an open access by the Internet" and "Maintenance of the anti-plagiarism system" are financed by an agreement 605/P-DUN/2018 from the resources of Polish Ministry of Science and Higher Education dedicated to the activity popularising the science.

10.32933/actainnovations.31

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Metrological evaluation of a 3D electrical capacitance tomography measurement system for two-phase flow fraction determination

Measurement Science and Technology (2013)

Radosław Wajman Paweł Fiderek H. Fidos Tomasz Jaworski Jacek Nowakowski

The industrial diagnostic and monitoring systems still require new methods offering new possibilities of non-invasive observation and analysis of the two-phase gas–liquid mixture flows. This paper demonstrates a new measurement system dedicated for non-invasive void fraction calculation and flow structure identification in vertical and horizontal pipelines. The study of the metrological validation of the designed three-dimensional capacitance tomography measurement system is discussed here. This research includes the 3D ECT sensor structure optimization process, the metrological evaluation of the image reconstruction accuracy and the developed liquid void fraction calculation method efficiency, in comparison with other common techniques. As a result of the performed analysis the advantages of the designed 3D ECT measurement system for non-invasive real-time dynamic flow process identification were discussed.

Electrical capacitance tomography

Fraction (chemistry)

10.1088/0957-0233/24/6/065302

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Citations (99)

Kalibracja systemu wizyjnego z kamerą CCD na potrzeby wysokotemperaturowych pomiarów właściwości powierzchniowych

Automatyka / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie (2007)

Anna Fabijańska Dominik Sankowski

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