Image processing for pattern extraction

Details Image processing for pattern extraction Image processing for pattern extraction

1992-07-20

1994-08-02

Mancuso, Joseph

Image analysis

Histogram processing

For setting a threshold

382 25, 382 60, G06K 948

Patent

active

053352947

ABSTRACT:
There are provided an image processing method and apparatus which can correctly extract desired image information from input image information and can recognize the extracted partial image information. An outline of a character or the like is traced by using an arbitrary point in the input image information as a start point. The start point is moved when the outline reaches the edge of the input image. The outline is again traced from the moved start point. The outline tracing and the movement of the start point are repeated until the character can be extracted by the outline tracing. When the number of times the start point has been moved exceeds a predetermined value, the input image information is inverted.

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patent: 4630306 (1986-12-01), West et al.
patent: 4791676 (1988-12-01), Flickner et al.
patent: 4843569 (1989-06-01), Sawada et al.
patent: 5182777 (1993-01-01), Nakayama et al.

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