AUTOMATIC CHARACTER-READING DEVICE

摘要

Handwritten and typewritten characters read in one and the same process.
In the first step, four interleaved images of the character are recorded in a memory (3). Then a preprocessor (4) determines the sort of characters either handwritten or typewritten, on the basis of their respective dimensions. Typewritten characters are enlarged so that they will be better readable owing to an enhanced scanning and stored in a buffer (10), the handwritten characters being first segmented by a geometric separator (9) before their storage in the buffer (10), next a circuit (5) derives the features irrespective of the sort of characters, after which the classification (in 11) takes place by means of learning means (12, 13) dependent on the sort of characters. A results combiner (20) resolves multiple recognitions by a feedback action to the buffer (10).
An editing device (14) arranges the recognition result in the right format and a final comparator (15) compares the output of the character-reading device to the output of a manual key-entry device.