Application of Deep Learning in Petrographic Coal Images Segmentation

The study of the petrographic structure of medium- and high-rank coals is important from both a cognitive and a utilitarian point of view. The petrographic constituents and their individual characteristics and features are responsible for the properties of coal and the way it behaves in various tech...

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Main Authors: Sebastian Iwaszenko, Leokadia Róg
Format: Article
Language:English
Published: MDPI AG 2021-11-01
Series:Minerals
Subjects:
Online Access:https://www.mdpi.com/2075-163X/11/11/1265
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author Sebastian Iwaszenko
Leokadia Róg
author_facet Sebastian Iwaszenko
Leokadia Róg
author_sort Sebastian Iwaszenko
collection DOAJ
description The study of the petrographic structure of medium- and high-rank coals is important from both a cognitive and a utilitarian point of view. The petrographic constituents and their individual characteristics and features are responsible for the properties of coal and the way it behaves in various technological processes. This paper considers the application of convolutional neural networks for coal petrographic images segmentation. The U-Net-based model for segmentation was proposed. The network was trained to segment inertinite, liptinite, and vitrinite. The segmentations prepared manually by a domain expert were used as the ground truth. The results show that inertinite and vitrinite can be successfully segmented with minimal difference from the ground truth. The liptinite turned out to be much more difficult to segment. After usage of transfer learning, moderate results were obtained. Nevertheless, the application of the U-Net-based network for petrographic image segmentation was successful. The results are good enough to consider the method as a supporting tool for domain experts in everyday work.
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spelling doaj.art-90b906fa103447dfba663b97fbb55ce82023-11-23T00:32:46ZengMDPI AGMinerals2075-163X2021-11-011111126510.3390/min11111265Application of Deep Learning in Petrographic Coal Images SegmentationSebastian Iwaszenko0Leokadia Róg1Department of Acoustics, Electronics and IT Solutions, GIG Research Institute, 40-166 Katowice, PolandDepartment of Solid Fuels Quality Assessment, GIG Research Institute, 40-166 Katowice, PolandThe study of the petrographic structure of medium- and high-rank coals is important from both a cognitive and a utilitarian point of view. The petrographic constituents and their individual characteristics and features are responsible for the properties of coal and the way it behaves in various technological processes. This paper considers the application of convolutional neural networks for coal petrographic images segmentation. The U-Net-based model for segmentation was proposed. The network was trained to segment inertinite, liptinite, and vitrinite. The segmentations prepared manually by a domain expert were used as the ground truth. The results show that inertinite and vitrinite can be successfully segmented with minimal difference from the ground truth. The liptinite turned out to be much more difficult to segment. After usage of transfer learning, moderate results were obtained. Nevertheless, the application of the U-Net-based network for petrographic image segmentation was successful. The results are good enough to consider the method as a supporting tool for domain experts in everyday work.https://www.mdpi.com/2075-163X/11/11/1265coalpetrographic analysismaceralsimage analysissemantic segmentationconvolutional neural networks
spellingShingle Sebastian Iwaszenko
Leokadia Róg
Application of Deep Learning in Petrographic Coal Images Segmentation
Minerals
coal
petrographic analysis
macerals
image analysis
semantic segmentation
convolutional neural networks
title Application of Deep Learning in Petrographic Coal Images Segmentation
title_full Application of Deep Learning in Petrographic Coal Images Segmentation
title_fullStr Application of Deep Learning in Petrographic Coal Images Segmentation
title_full_unstemmed Application of Deep Learning in Petrographic Coal Images Segmentation
title_short Application of Deep Learning in Petrographic Coal Images Segmentation
title_sort application of deep learning in petrographic coal images segmentation
topic coal
petrographic analysis
macerals
image analysis
semantic segmentation
convolutional neural networks
url https://www.mdpi.com/2075-163X/11/11/1265
work_keys_str_mv AT sebastianiwaszenko applicationofdeeplearninginpetrographiccoalimagessegmentation
AT leokadiarog applicationofdeeplearninginpetrographiccoalimagessegmentation