Hybrid Pen-Input Character Recognition System Based on Integration of Online-Offline Recognition

  • Authors:
  • Hiroshi Tanaka;Kenji Nakajima;Kazushi Ishigaki;Katsuhiko Akiyama;Masaki Nakagawa

  • Affiliations:
  • -;-;-;-;-

  • Venue:
  • ICDAR '99 Proceedings of the Fifth International Conference on Document Analysis and Recognition
  • Year:
  • 1999

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Abstract

We will describe a handwriting character recognition system that integrates offline recognition requiring a bitmap image and online recognition involving an input pattern as a sequence of x-y coordinates.Offline recognition performs well for painted or overwritten patterns for which online recognition would not be suited, whereas online recognition is suitable for very deformed patterns for which offline recognition is not suited. Because each method has different recognition capabilities, the methods complement each other when integrated them. We have implemented a hybrid handwriting character recognition system in which the recognition results of the offline and online recognizer are integrated to create an improved product. After testing several integration methods for a handwriting character database, we found that the best method increased the recognition rate from 73.8% (offline) and 84.8% (online) to 87.6% (integrated).