Character recognition apparatus

Details Character recognition apparatus Character recognition apparatus

1990-05-15

1991-09-17

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

382 9, G06K 968, G06K 934

Patent

active

050502247

ABSTRACT:
An input character image signal is converted into binary image data and then stored in an image memory. The binary image data stored in the image memory are profiled in the directions of X and Y axes to set a rectangular region circumscribing a desired character string. The binary image data included in the rectangular region are compared with a dictionary pattern to obtain candidate characters and their similarities. The sum of similarities corresponding to a candidate character and when it is more than a predetermined value, the candidate character is output as the result of recognition.

REFERENCES:
patent: 4594372 (1986-06-01), Tsuji
patent: 4635290 (1987-01-01), Tsuji et al.
patent: 4651289 (1987-03-01), Maeda et al.
patent: 4864629 (1989-09-01), Deering
patent: 4907283 (1990-03-01), Tanaka et al.

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