Ruled line elimination apparatus and method

Details Ruled line elimination apparatus and method Ruled line elimination apparatus and method

1996-12-20

1999-04-20

Boudreau, Leo H.

Image analysis

Image segmentation

Segmenting individual characters or words

382173, 382177, 382282, 382283, 707510, 358482, G06K 934

Patent

active

058964649

ABSTRACT:
In the ruled line elimination apparatus of the present invention, the ruled line contacting a character or overlapping to the character is completely eliminated. First, a ruled line determination section determines existence area of the ruled line in the input image. Second, a ruled line elimination section determines continuous pixels consisting of the ruled line in the existence area, and eliminates the continuous pixels by unit of predetermined width, in which a direction of the predetermined width is perpendiculer to a directed of the ruled line.

REFERENCES:
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patent: 5191612 (1993-03-01), Katsuyama et al.
patent: 5235653 (1993-08-01), Nakano et al.
patent: 5530561 (1996-06-01), Shimazaki
patent: 5668892 (1997-09-01), Itonori
Nobuyuki Otsu, "An Automatic Threshold Selection Method Based on Discriminant and Least Squares Critena", Proc. of the Institute of Electronics . . . , vo. J63-DNo. 4, pp. 349-356, 1980.
Nobuyuki Otsu, "A Threshold Selection Method from Gray-Level Histograms", IEEE Trans. on Systems . . . , Vo. SMC-9 No. 1, Jan. 1979, pp. 62-66.

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