Pattern recognition apparatus

Details Pattern recognition apparatus Pattern recognition apparatus

Filed on

1989-06-06

Date issued

1993-06-22

Examiner

Boudreau, Leo H.

Patent Class

Image analysis

SubClass

Histogram processing

SubSubClass

For setting a threshold

Other Related Categories

382 55, 382 60, G06K 900

Type

Patent

Status

active

Patent number

052221580

Description

ABSTRACT:
A pattern recognition apparatus is capable of subjecting a large image region to image processing with an image memory having a small memory capacity and providing a contouring line data of an image in the same manner as processing with an image memory having a large memory capacity. The pattern recognition apparatus is provided with an image input means for inputting an image; an image data storing means for storing image data; a contouring line data storing means for storing contouring line data; and a contouring line data connecting means. The contouring line data connecting means is to partition image data into adjacent partitioned regions so as to allow them to overlap with each other by only one pixel, to delete a contouring line data in an overlapping portion of the adjacent partitioned regions from a contouring line data for the image data in each of the partitioned regions on the basis of a vector data passing in a predetermined direction, and to connect the contouring line data of an open drawing so as to match their terminal points in the overlapping portion thereof with each other, thereby providing a total contouring line data.

REFERENCES:
patent: 3925760 (1975-12-01), Mason et al.
patent: 4147928 (1979-04-01), Crean et al.
patent: 4272756 (1981-06-01), Kakumoto et al.
patent: 4428077 (1984-01-01), Shimada et al.
patent: 4839824 (1989-06-01), Ando
patent: 4908872 (1990-03-01), Toriu et al.

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