Handwritten Bangla numeral recognition system and its application to postal automation

  • Authors:

  • Ying Wen;Yue Lu;Pengfei Shi

  • Affiliations:

  • Institute of Image Processing and Pattern Recognition, Shanghai Jiaotong University, Shanghai 200030, China and Department of Computer Science and Technology, East China Normal University, Shangha ...;Department of Computer Science and Technology, East China Normal University, Shanghai 200062, China and Shanghai Research Institute of Postal Science, China State Post Bureau, Shanghai 200062, Chi ...;Institute of Image Processing and Pattern Recognition, Shanghai Jiaotong University, Shanghai 200030, China

  • Venue:
  • Pattern Recognition
  • Year:
  • 2007

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Abstract

A recognition system for handwritten Bangla numerals and its application to automatic letter sorting machine for Bangladesh Post is presented. The system consists of preprocessing, feature extraction, recognition and integration. Based on the theories of principal component analysis (PCA), two novel approaches are proposed for recognizing handwritten Bangla numerals. One is the image reconstruction recognition approach, and the other is the direction feature extraction approach combined with PCA and SVM. By examining the handwritten Bangla numeral data captured from real Bangladesh letters, the experimental results show that our proposed approaches are effective. To meet performance requirements of automatic letter sorting machine, we integrate the results of the two proposed approaches with one conventional PCA approach. It has been found that the recognition result achieved by the integrated system is more reliable than that by one method alone. The average recognition rate, error rate and reliability achieved by the integrated system are 95.05%, 0.93% and 99.03%, respectively. Experiments demonstrate that the integrated system also meets speed requirement.