公开(公告)号：JPH01277981A

公开(公告)日：1989-11-08

申请号：JP10446988

申请日：1988-04-28

Applicant: IBM

Inventor： NAKAMURA YOJI ,  RICHIYAADO JII KEESHI ,  TOYOKAWA KAZUHARU

IPC: G06K9/70 ,  G06K9/68

Abstract: PURPOSE: To reduce a storage area and samples required for correction by storing the images of the characters of a document in an image buffer, storing the codes and flags of the characters of high and low recognition in a result buffer and performing the correction by a learning function. CONSTITUTION: A document scanning device 1 scans the document and stores the character images for one page in the image buffer 2. A character segmentation circuit 3 segments all the characters of one row and stores them in the frame of an operation buffer 4. A control circuit 5 operates a logic circuit 10, takes out character recognition trees 6A-6E and all the character codes from a tree memory 6, recognizes the character images and stores a result in an auxiliary buffer. The character code is stored in the result buffer 7 when the accuracy of recognition is higher than a prescribed value and the character code and the flag are stored when it is lower. The image and character code of an erroneously recognized character are stored in a learning buffer 9 and the learning of the character recognition tree, that is the correction, is performed.