The Evaluation of the Initial Skew Rate for Printed Text

In this manuscript the algorithm for identification of the initial skew rate for printed text is presented. Proposed algorithm creates rectangular hull around all text characters. Combining nearby rectangular hulls form objects. After applying mathematical morphology on it, the biggest object is cha...

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Bibliographic Details
Published in:Journal of Electrical Engineering 2011-05, Vol.62 (3), p.134-140
Main Author: Brodic, Darko
Format: Article
Language:English
Subjects:
document image processing
OCR
printed text
skew rate
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Summary:In this manuscript the algorithm for identification of the initial skew rate for printed text is presented. Proposed algorithm creates rectangular hull around all text characters. Combining nearby rectangular hulls form objects. After applying mathematical morphology on it, the biggest object is characterized as well as selected. Rectangular hull gravity center forms reference points on these objects used as a base for calculation ieestimation of the initial skew rate. Using the least square method, initial skew rate is calculated. Comparative analysis of the origin and estimated skew rate is presented as well as discussed. Algorithm is examined with a number of printed text examples. Proposed algorithm showed robustness for skewness of printed text in the wide range.
ISSN:1335-3632
1339-309X
DOI:10.2478/v10187-011-0022-2