Apparatus for and method of detecting dotted image area using tw

Details Apparatus for and method of detecting dotted image area using tw Apparatus for and method of detecting dotted image area using tw

1995-11-02

1998-06-23

Boudreau, Leo H.

Image analysis

Image segmentation

Distinguishing text from other regions

358462, G06K 934

Patent

active

057713138

ABSTRACT:
An apparatus for and a method of detecting a dotted image area in an image. It is judged on the basis of image data corresponding to pixels in a first judging area which includes a predetermined number of pixels including a target pixel whether or not the target pixel is a peculiar point pixel (a peak pixel or a dip pixel). Further, it is judged on the basis of image data corresponding to pixels in a second judging area which is larger than the first judging area whether or not the target pixel is a peculiar point pixel. The dotted image area in the image is detected on the basis of the results of judgment related to the first judging area and the second judging area.

REFERENCES:
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patent: 5025481 (1991-06-01), Ohuchi
patent: 5193122 (1993-03-01), Kowalski et al.
patent: 5341227 (1994-08-01), Kumashiro
patent: 5587808 (1996-12-01), Hagihara et al.
patent: 5617485 (1997-04-01), Ohuchi et al.
European Search Report.

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