| 摘要 |
<p>PURPOSE:To improve the recognizing efficiency of character patterns, by comparing the distances between features of input character pattern with a standard pattern, studying the context between preceding and succeeding characters when plural candidate characters are produced and deciding the above-mentioned distance with the threshold value when it is impossible to decide a candidate character. CONSTITUTION:An unknown character pattern train 1 is supplied and binary coded 3 after a photoelectric conversion 2 to be stored in a storage circuit 4. A sorting circuit 5 extracts the feature quantity out of the data of the circuit 4 and compares it with a standard pattern to calculate a distance to an input character. Then plural characters are sorted 1 or selected and stored 6. A collating circuit 7 collates the data of the storage circuit 6 with the language knowledge (word, grammar, meaning, etc.) for decision 9. When it is impossible to decide the type of the character, a detailed discrimination 10 is carried out through a comparison of distance values and based on the data of the circuit 6. Then a recognized result 11 is delivered. Thus the decision and discrimination are carried out based on the threshold value after sorting and language processing. This reduced the processing quantity and improves the recognizing accuracy.</p> |
