본 논문에서는 다중 신경망을 이용한 인식단위 결합 기반의 인쇄체 문자인식 방법을 제안한다. 입력 문자영상은 한글 문자 형식 6가지와 한글 이외의 기타 문자 형식의 전체 7가지 형식으로 분류되어 인식된다. 한글 문자는 2단계의 MLP 신경망 인식기에 의해 인식된다. 첫째 단계에서는 한글 문자를 자소의 조합 형태에 따라 2개 또는 3개의 인식단위로 나누고, 각 인식단위에서 추출된 방향각도 특징 벡터를 입력으로 하는 MLP 신경망으로 1차 인식한다. 둘째 단계에서는 첫째 단계의 인식단위별 MLP 신경망 인식기의 인식양상 특징을 추출하고 다른 MLP 신경망에 입력하여 최종 한글 문자인식을 한다. 한글 이외의 기타 문자의 인식을 위해서는 단일 MLP 신경망을 사용한다. 인식 실험에서는 실제 우편물 50,000통 영상으로부터 추출한 문자영상 데이터베이스를 이용하였는데, 실험 결과 본 논문에서 제안한 방법이 매우 우수함을 알 수 있었다.
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