Arabic/Latin and Machine-printed/Handwritten Word Discrimination using HOG-based Shape Descriptor

Authors

  • Asma Saidani University of Tunis, ENSIT-LaTICE, 5 Avenue Taha Hussein, BP 56 Babmnara 1008 Tunis, Tunisia
  • Afef Kacem University of Tunis, ENSIT-LaTICE, 5 Avenue Taha Hussein, BP 56 Babmnara 1008 Tunis, Tunisia
  • Abdel Belaid University of Lorraine LORIA-Nancy, France

Abstract

In this paper, we present an approach for Arabic and Latin script and its type identification based on Histogram of Oriented Gradients (HOG) descriptors. HOGs are first applied at word level based on writing orientation analysis. Then, they are extended to word image partitions to capture fine and discriminative details. Pyramid HOG are also used to study their effects on different observation levels of the image. Finally, co-occurrence matrices of HOG are performed to consider spatial information between pairs of pixels which is not taken into account in basic HOG. A genetic algorithm is applied to select the potential informative features combinations which maximizes the classification accuracy. The output is a relatively short descriptor that provides an effective input to a Bayes-based classifier. Experimental results on a set of words, extracted from standard databases, show that our identification system is robust and provides good word script and type identification: 99.07% of words are correctly classified.

Keywords

Script and type identification, Histogram of oriented Gradients, Arabic and Latin separation

Author Biographies

Asma Saidani, University of Tunis, ENSIT-LaTICE, 5 Avenue Taha Hussein, BP 56 Babmnara 1008 Tunis, Tunisia

computer science department

phd student

Afef Kacem, University of Tunis, ENSIT-LaTICE, 5 Avenue Taha Hussein, BP 56 Babmnara 1008 Tunis, Tunisia

computer science department

dr.

Abdel Belaid, University of Lorraine LORIA-Nancy, France

Pr.

Published

2015-09-16

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