Estimation of the Global and Local Text Skew in the Old Printed Documents

Brodić, Darko and Draganov, Ivo R. and Milivojević, Dragan R. and Tasić, Viša (2013) Estimation of the Global and Local Text Skew in the Old Printed Documents. In: 48th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2013), June 26-29, 2013, Ohrid, Macedonia.


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The paper proposed a robust skew estimation method for the old printed document that estimates global and local skew angles. The global skew angle characterizes the main skew angle of the document image. In order to identify it, the longest object was extracted. Then, its skew was estimated with the moments. Accordingly, document image was globally de-skewed. The local skew angle represents a fine variation of each text line after deskewing document image. Creating vertical projection profiles of deskewed document identified different text lines. Line through text objects joined them in each text line. At the end, text skew of such objects was estimated by the moments identifying local text skews.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Document image analysis, Moment methods, Optical character recognition, Projection algorithms, Skew Adjustment
Subjects: Scientific Fields (Frascati) > Engineering and Technology > Electrical engineering, electronic engineering,information engineering
Divisions: Faculty of Technical Sciences
Depositing User: ICEST
Date Deposited: 18 Mar 2020 17:12
Last Modified: 18 Mar 2020 17:12

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