Method of extracting a textual area in a digital image

Details Method of extracting a textual area in a digital image Method of extracting a textual area in a digital image

2005-03-02

2008-10-07

Bella, Matthew C. (Department: 2624)

Image analysis

Image segmentation

Distinguishing text from other regions

C382S175000, C382S199000, C382S190000, C382S274000, C382S260000

Reexamination Certificate

active

07433516

ABSTRACT:
A method of extracting a textual area in a digital image, in which the digital image is divided into a plurality of blocks, each being computed to obtain a number of edges, each having a higher contrast in the block at a horizontal direction and a vertical direction. Based on the determined edge number, a plurality of textual blocks are determined out of the plurality of blocks in the digital image and the corresponding textual areas may be extracted from the digital image, so that the textual area and a continuous pictorial area in the digital image may be processed separately.

REFERENCES:
patent: 5363414 (1994-11-01), Muto
patent: 2003/0039394 (2003-02-01), Yamazaki
patent: 2004/0036924 (2004-02-01), Ihara
patent: 2006/0034371 (2006-02-01), Song et al.

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