印刷文字認識における位置ずれ補正の効果

概要

論文の詳細を見る
Effective methods have been proposed for the recognition of the printed Chinese characters using pattern matching approaches. Through these works, the positioning errors have been proved to cause fatal deterioration of recognition. The simplest and most powerful way to rectify the errors may be to seek the best fit between the input pattern and the standard of each category by translating one of them in horizontal and/or vertical directions. We applied the technique to the recognition of printed Chinese characters whose vocabulary amounts to 1850. Two algorithms belonging to pattern matching methods were used. One of them is the hierarchical pattern matching method in frequency domain and the other is the simple binary pattern matching. Applying the technique of the correction, the error rates were reduced remarkably. The effect of the correction resulted from the remarkable improvement of interclass similarities and the slight rises of the interclass similarities.
一般社団法人情報処理学会の論文
1975-12-15