Image discrimination apparatus, copier and image...

Details Image discrimination apparatus, copier and image... Image discrimination apparatus, copier and image...

2005-08-09

2005-08-09

Miriam, Daniel (Department: 2621)

Image analysis

Pattern recognition

Template matching

C382S190000

Reexamination Certificate

active

06928190

ABSTRACT:
In an image discrimination apparatus for discriminating a prescribed image pattern contained in the image of an original, a plurality of marks having a prescribed color density and disposed in a predetermined positional relationship are extracted from an input original image and distances between the extracted plurality of marks are calculated (S800-S811). The calculated distances between the plurality of marks are compared with distances, stored in advance as a template, between a plurality of marks constituting the prescribed image pattern. Whether or not the prescribed image pattern is present in the original image is determined in accordance with the result of the comparison (S812-S814).

REFERENCES:
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patent: 5436735 (1995-07-01), Tanabe et al.
patent: 5502575 (1996-03-01), Kai et al.
patent: 5640467 (1997-06-01), Yamashita et al.
patent: 5771315 (1998-06-01), Matsuyama
patent: 6493462 (2002-12-01), Inoue

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