ID | 64240 |
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Author |
Shi, Chenrui
Department of Information and Communication Systems, Graduate School of Natural Science and Technology, Okayama University
Funabiki, Nobuo
Department of Information and Communication Systems, Graduate School of Natural Science and Technology, Okayama University
Kaken ID
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Huo, Yuanzhi
Department of Information and Communication Systems, Graduate School of Natural Science and Technology, Okayama University
Mentari, Mustika
Department of Information Technology, State Polytechnic of Malang
Suga, Kohei
Astrolab
Toshida, Takashi
Astrolab
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Abstract | Nowadays, digital transformation (DX) is the key concept to change and improve the operations in governments, companies, and schools. Therefore, any data should be digitized for processing by computers. Unfortunately, a lot of data and information are printed and handled on paper, although they may originally come from digital sources. Data on paper can be digitized using an optical character recognition (OCR) software. However, if the paper contains a table, it becomes difficult because of the separated characters by rows and columns there. It is necessary to solve the research question of "how to convert a printed table on paper into an Excel table while keeping the relationships between the cells?" In this paper, we propose a printed table digitization algorithm using image processing techniques and OCR software for it. First, the target paper is scanned into an image file. Second, each table is divided into a collection of cells where the topology information is obtained. Third, the characters in each cell are digitized by OCR software. Finally, the digitalized data are arranged in an Excel file using the topology information. We implement the algorithm on Python using OpenCV for the image processing library and Tesseract for the OCR software. For evaluations, we applied the proposal to 19 scanned and 17 screenshotted table images. The results show that for any image, the Excel file is generated with the correct structure, and some characters are misrecognized by OCR software. The improvement will be in future works.
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Keywords | digitization
printed table
OCR
Python
OpenCV
Tesseract
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Published Date | 2022-12-11
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Publication Title |
Algorithms
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Volume | volume15
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Issue | issue12
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Publisher | MDPI
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Start Page | 471
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ISSN | 1999-4893
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Content Type |
Journal Article
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language |
English
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OAI-PMH Set |
岡山大学
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Copyright Holders | © 2022 by the authors.
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File Version | publisher
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DOI | |
Web of Science KeyUT | |
Related Url | isVersionOf https://doi.org/10.3390/a15120471
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License | https://creativecommons.org/licenses/by/4.0/
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