Polygon-based method for automatic extraction of selected text i

Details Polygon-based method for automatic extraction of selected text i Polygon-based method for automatic extraction of selected text i

1990-05-21

1991-09-10

Razavi, Michael

Image analysis

Histogram processing

For setting a threshold

382 16, 382 61, 382 9, G06K 948

Patent

active

050480995

ABSTRACT:
A threshold free algorithm is used to extract text in a region which has been circled with any hand drawn shape of any size that consitutes a closed curve. Use of this technique allows an operator to select intensity regions in text material in a paper-based document and automate the extraction of the enclosed text in the digitized image of the document.

REFERENCES:
patent: 4680805 (1987-07-01), Scott
patent: 4736310 (1988-04-01), Celthorpe et al.
patent: 4777651 (1988-10-01), McCann et al.
patent: 4817166 (1989-03-01), Gonzalez et al.
patent: 4853971 (1989-08-01), Nonura
patent: 4856074 (1989-08-01), Nagaoka
patent: 4901365 (1990-02-01), Kelland
patent: 4933984 (1990-06-01), Nakano et al.

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