Image analysis – Histogram processing – For setting a threshold
Patent
1991-12-30
1994-05-17
Couso, Yon J.
Image analysis
Histogram processing
For setting a threshold
382 48, 382 56, 358462, G06K 934
Patent
active
053135261
ABSTRACT:
A method for disconnecting character strings from compressed image data comprising the steps of: scanning data blocks representative of the photographic/graphic data portion to detect the initial and last y-coordinates of the continuous text data portion, accumulating the number of pixel lines representative of the text data portion, and calculating the character string width upon detecting a profile line. Based on the accumulated number of pixel lines representative of the text data portion, a discrimination is made as to whether a character string is connected to the scanned block. When a character string is connected only to one of left and right sides of the data block, the connected character string is disconnected forcedly by creating a new block corresponding to the character string, based on the position information of each text data portion. In accordance with the present invention, it is possible to improve the accuracy in extracting each data portion and thus the reliability in the acknowledgement of the document.
REFERENCES:
patent: 4411015 (1983-10-01), Scherl
patent: 4503556 (1985-03-01), Scherl
patent: 4577235 (1986-03-01), Kannapell
patent: 4741046 (1988-04-01), Matsunawa
patent: 4856074 (1989-08-01), Nagaoka
Couso Yon J.
Goldstar Co. Ltd.
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