String Representation of Handwritten Katakana Characters

手書き片仮名文字を対象としたストリング化の一手法

String Representation of Handwritten Katakana Characters

Creators Kinumatsu Hiroshi

Creators Hamamoto Yoshihiko

Creators Kanaoka Taiho

Creators Tomita Shingo

Creators Okada Toshihiko

In syntactical pattern recognition, a pattern must be represented by a sentence (or string) in a language. So string representation of a input pattern is important pre-processing for syntactical pattern recognition. In this paper, we propose a method of string representation for handwritten katakana characters. Each character is a continuous line pattern on a 20×20 mesh. Starting from its upper right corner, each input pattern is chain-coded cell by cell. Namely, each successive cell is coded as A, B, C or D according to its position relative to that of the current one. After three consecutive cells have been coded one of four primitives a, b, c and d, by using four concatenation relations ×, +, *, : and the parentheses ( ), the concatenation of branches, which is a string representation, completes. From some experimental results, the validity of our method is discussed.

[ISSN]0372-7661

[NCID]AN00244228