자소 단위의 온라인 흘림체 한글 인식

Grapheme-based on-line recognition of cursive korean characters

  • 정기철 (경북대학교 컴퓨터공학과) ;
  • 김상균 (경북대학교 컴퓨터공학과) ;
  • 이종국 (안동대학교 컴퓨터공학과) ;
  • 김행준 (경북대학교 컴퓨터공학과)
  • 발행 : 1996.09.01

초록

Korean has a large set of characters, and has a two-dimensional formation: each character is composed of graphemes in two dimensions. Whereas connections between characters are rare, connections inside a grapheme and between graphemes happen frequently and these connections generate many cursive strokes. To deal with the large character set and the cursive strokes, using the graphemes as a recognition unit is an efffective approach, because it naturally accommodates the structural characteristics of the characters. In this paper, we propose a grapheme-based on-line recognition method for cursive korean characters. Our method uses a TDNN recognition engine to segment cursive strokes into graphemes and a graph-algorithmic postprocessor based on korean grapheme composition rule and viterbi search algorithm to find the best recognition score path. We experimented the method on freely hand-written charactes and obtained a recognition rate of 94.5%.

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