Text Skew Detection Using Log-polar Transformation
Darko Brodic, Zoran N. Milivojevic, Dragan R. Milivojevic
International Journal of Computational Linguistics Research, Vol. 14, No. 4, 2023.
DOI: https://doi.org/10.6025/jcl/2023/14/4/113-120
Link: https://www.dline.info/jcl/fulltext/v14n4/jclv14n4_2.pdf
Abstract:
The paper proposes the method for text skew detection based on log-polar transformation and crosscorrelation. The text image is transformed into log-polar domain as well as the control ellipse. Theirs cross-correlation established the cost function. The extraction of the cost function maximum represents the text skew value in the region. The method is characterized by the accuracy and computational time inexpensiveness.