Logistic Regression for Machine Learning in Process Tomography

The main goal of the research presented in this paper was to develop a refined machine learning algorithm for industrial tomography applications. The article presents algorithms based on logistic regression in relation to image reconstruction using electrical impedance tomography (EIT) and ultrasoun...

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Main Authors: Tomasz Rymarczyk, Edward Kozłowski, Grzegorz Kłosowski, Konrad Niderla
Format: Article
Language:English
Published: MDPI AG 2019-08-01
Series:Sensors
Subjects:
Online Access:https://www.mdpi.com/1424-8220/19/15/3400
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author Tomasz Rymarczyk
Edward Kozłowski
Grzegorz Kłosowski
Konrad Niderla
author_facet Tomasz Rymarczyk
Edward Kozłowski
Grzegorz Kłosowski
Konrad Niderla
author_sort Tomasz Rymarczyk
collection DOAJ
description The main goal of the research presented in this paper was to develop a refined machine learning algorithm for industrial tomography applications. The article presents algorithms based on logistic regression in relation to image reconstruction using electrical impedance tomography (EIT) and ultrasound transmission tomography (UST). The test object was a tank filled with water in which reconstructed objects were placed. For both EIT and UST, a novel approach was used in which each pixel of the output image was reconstructed by a separately trained prediction system. Therefore, it was necessary to use many predictive systems whose number corresponds to the number of pixels of the output image. Thanks to this approach the under-completed problem was changed to an over-completed one. To reduce the number of predictors in logistic regression by removing irrelevant and mutually correlated entries, the elastic net method was used. The developed algorithm that reconstructs images pixel-by-pixel is insensitive to the shape, number and position of the reconstructed objects. In order to assess the quality of mappings obtained thanks to the new algorithm, appropriate metrics were used: compatibility ratio (CR) and relative error (RE). The obtained results enabled the assessment of the usefulness of logistic regression in the reconstruction of EIT and UST images.
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spelling doaj.art-76aac811724d4a529d7dc4ebabacdec82022-12-22T02:10:21ZengMDPI AGSensors1424-82202019-08-011915340010.3390/s19153400s19153400Logistic Regression for Machine Learning in Process TomographyTomasz Rymarczyk0Edward Kozłowski1Grzegorz Kłosowski2Konrad Niderla3Research & Development Centre Netrix S.A., University of Economics and Innovation in Lublin, 20-209 Lublin, PolandFaculty of Management, Lublin University of Technology, 20-618 Lublin, PolandFaculty of Management, Lublin University of Technology, 20-618 Lublin, PolandResearch & Development Centre Netrix S.A., University of Economics and Innovation in Lublin, 20-209 Lublin, PolandThe main goal of the research presented in this paper was to develop a refined machine learning algorithm for industrial tomography applications. The article presents algorithms based on logistic regression in relation to image reconstruction using electrical impedance tomography (EIT) and ultrasound transmission tomography (UST). The test object was a tank filled with water in which reconstructed objects were placed. For both EIT and UST, a novel approach was used in which each pixel of the output image was reconstructed by a separately trained prediction system. Therefore, it was necessary to use many predictive systems whose number corresponds to the number of pixels of the output image. Thanks to this approach the under-completed problem was changed to an over-completed one. To reduce the number of predictors in logistic regression by removing irrelevant and mutually correlated entries, the elastic net method was used. The developed algorithm that reconstructs images pixel-by-pixel is insensitive to the shape, number and position of the reconstructed objects. In order to assess the quality of mappings obtained thanks to the new algorithm, appropriate metrics were used: compatibility ratio (CR) and relative error (RE). The obtained results enabled the assessment of the usefulness of logistic regression in the reconstruction of EIT and UST images.https://www.mdpi.com/1424-8220/19/15/3400machine learningelectrical impedance tomographyultrasound tomographyprocess tomographyimage reconstruction
spellingShingle Tomasz Rymarczyk
Edward Kozłowski
Grzegorz Kłosowski
Konrad Niderla
Logistic Regression for Machine Learning in Process Tomography
Sensors
machine learning
electrical impedance tomography
ultrasound tomography
process tomography
image reconstruction
title Logistic Regression for Machine Learning in Process Tomography
title_full Logistic Regression for Machine Learning in Process Tomography
title_fullStr Logistic Regression for Machine Learning in Process Tomography
title_full_unstemmed Logistic Regression for Machine Learning in Process Tomography
title_short Logistic Regression for Machine Learning in Process Tomography
title_sort logistic regression for machine learning in process tomography
topic machine learning
electrical impedance tomography
ultrasound tomography
process tomography
image reconstruction
url https://www.mdpi.com/1424-8220/19/15/3400
work_keys_str_mv AT tomaszrymarczyk logisticregressionformachinelearninginprocesstomography
AT edwardkozłowski logisticregressionformachinelearninginprocesstomography
AT grzegorzkłosowski logisticregressionformachinelearninginprocesstomography
AT konradniderla logisticregressionformachinelearninginprocesstomography