Image analysis – Applications – Manufacturing or product inspection
Patent
1997-09-17
1998-11-10
Boudreau, Leo H.
Image analysis
Applications
Manufacturing or product inspection
382143, G06K 900
Patent
active
058356231
ABSTRACT:
A method is used for discerning a specific type of a work, including a plurality of specified contoured portions forming parts of the work, from an image including the subject work. Each specified contoured portion, which may be defined by geometric characteristics, such as an area, a peripheral length of a specified contoured portion and a ratio between the area and peripheral length, is recognized in the image based on two-valued image data into which many-valued image data representative of the subject work is transformed with a threshold value. A position of the subject work is discerned based on a relative position of each two specified contoured portions defined by geometric characteristics, such as a distance between centers of each two specified contoured portions and an angle of a center line of each two specified contoured portions relative to a center line of another two specified contoured portions.
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Arataki Hiroo
Nishijima Takayoshi
Nozaki Tomoyuki
Shinohara Kazuhiro
Yonezawa Yasuaki
Boudreau Leo H.
Fleit Martin
Mazda Motor Corporation
Tadayon Bijan
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