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Using skeleton and Hough transform variant to correct skew in historical documents

Mathematics and computers in simulation, 2020, Vol.167, p.389-403 [Peer Reviewed Journal]

Distributed under a Creative Commons Attribution 4.0 International License ;ISSN: 0378-4754 ;EISSN: 1872-7166 ;DOI: 10.1016/j.matcom.2019.05.009

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  • Title:
    Using skeleton and Hough transform variant to correct skew in historical documents
  • Author: Boudraa, Omar ; Khaled Hidouci, Walid ; Michelucci, Dominique
  • Subjects: Computer Science ; Computer Vision and Pattern Recognition ; Digital Libraries ; Document and Text Processing
  • Is Part Of: Mathematics and computers in simulation, 2020, Vol.167, p.389-403
  • Description: As a main part of several document analysis systems, Skew estimation represents one of the major research challenges, particularly in case of historical documents exploration. In this paper, we propose an original skew angle detection and correction technique. Morphological Skeleton is introduced to considerably diminish the amount of data by eliminating the redundant pixels and preserving only the central curves of the image components. Next, the proposed method uses Progressive Probabilistic Hough Transform (PPHT) to find image lines. At the end, a specific procedure is applied in order to measure the global skew angle of the document image from these identified lines. Experimental results demonstrate the accuracy and the effectiveness of our approach on skew angle detection upon three popular datasets covering many types of documents of diverse linguistic writings (Chinese, Greek and English) and different styles (horizontal or vertical orientations, including figures and tables, multi-columns page layouts).
  • Publisher: Elsevier
  • Language: English
  • Identifier: ISSN: 0378-4754
    EISSN: 1872-7166
    DOI: 10.1016/j.matcom.2019.05.009
  • Source: Hyper Article en Ligne (HAL) (Open Access)
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