Character recognition system

Details Character recognition system Character recognition system

1990-12-12

1994-04-26

Moore, David K.

Image analysis

Histogram processing

For setting a threshold

382 22, 382 26, 382 55, G06K 948, G06K 946, G06K 944

Patent

active

053074246

ABSTRACT:
Characters to be recognized and which may be handwritten are each described by a pattern of one bit thresholded pixel data which follows the center line of the character and encoded into strings of digital data signals (bytes) which represent the shape of the pattern from three aspects, namely the top view, the front edge and the rear edge thereof, thereby providing low level recognition information in the form of three digital data strings. From these strings, the characters are recognized by finding high level recognition strings of digital signals which correspond to different characters in the character set to be recognized. This high level recognition is carried on in two steps, namely allocating the high level recognition strings which correspond to the low level strings for each aspect of the character and then finding combinations of high level strings reflecting the same character, thereby accounting for variations in the shapes in which the same character can be written. The high level strings and the combinations are stored in tables to enable recognition of characters in a character set.

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