| 摘要 |
Column misalignment between a magnetically-recognized character string and an optically-recognized character string is corrected to improve character recognition reliability. A character string is read magnetically and the result outputted. The same character string is also read optically and the result outputted. A magnetic data reading unit detects the magnetism of a character string printed in magnetic ink and outputs the detected magnetic data. A recognition result comparing unit then applies a column offset detection process to detect misalignment between the character columns in the magnetic and optical results, then applies a column offset correction process to correct any column offset and align corresponding character columns. The comparing unit then compares corresponding character columns in the magnetic data recognition result and image data recognition result. For each position comparison, the comparing unit outputs the common character if the magnetically-recognized and optically-recognized character at that position match, or a question mark if the magnetically-recognized and optically-recognized character at the position do not match or if one or both of the magnetically-recognized or optically-recognized character is missing.
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