Title extracting apparatus for extracting title from document im

Details Title extracting apparatus for extracting title from document im Title extracting apparatus for extracting title from document im

1996-08-07

2000-03-07

Tran, Phuoc

Image analysis

Image segmentation

Segmenting individual characters or words

382171, 382203, 382101, G06K 934

Patent

active

06035061&

ABSTRACT:
A title extracting apparatus scans black pixels in a document image and extracts rectangular regions that circumscribe connected regions of the black pixels as character rectangles. In addition, the title extracting apparatus unifies a plurality of character rectangles that adjoin and extracts rectangular regions that circumscribe the character rectangles as character string rectangles. Thereafter, the title extracting apparatus calculates points with the likelihood of being a title corresponding to attributes such as an underline attribute, a frame attribute, and a ruled line attribute of each character string rectangle, the positions of the character string rectangles in the document image, and the mutual position relation and extracts a character string rectangle with the highest points as a title rectangle. In the case of a tabulated document, the title extracting apparatus can extract a title rectangle from the inside of the table. Characters extracted from the title rectangle are used as keywords of a document image by the character recognizing process.

REFERENCES:
patent: 5075895 (1991-12-01), Bessho
patent: 5185813 (1993-02-01), Tsujimoto
patent: 5613016 (1997-03-01), Saitoh
Takashi Saitoh et al., "Document Image Segmentation and Layout Analysis", IEICE Transactions on Information and Systems, Jul. 1994, No. 7, Tokyo, JP, pp. 778-784.
Hiroko Fujihara et al., "Qualitative/Fuzzy Approach to Document Recognition", The Eighth Conference on Artificial Intelligence for Applications, Mar., 1992, pp. 254-260.
A. Dengel et al., "OfficeMaid--A system for Office Mail Analysis, Interpretation and Delivery", Germany, pp. 52-75.
T. Akiyama and N. Hagita, "Automated entry system for printed documents", Pattern Recognition, vol. 23, No. 11, pp. 1141-1154, 1990.

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