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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 5881167 B1

PDFFull Text
Date of Patent:
Mar. 09, 1999

Filed:

Jan. 08, 1997

Method for position recognition

Applicant:
Inventors:

Misuzu Takano, Hirakata, JP;

Yoshihiro Itsuzaki, Kashihara, JP;

Kinji Horikami, Suita, JP;

Masaya Nakao, Moriguchi, JP;

Assignee:

Matsushita Electric Industrial Co., Ltd., Osaka-fu, JP;

Attorney:

Wenderoth, Lind & Ponack, L.L.P.

Primary Examiner:

Leo H Boudreau

Assistant Examiner:

Bijan Tadayon

Int. Cl.
CPC ...
G06K / ;
U.S. Cl.
CPC ...
382169 ; 382270 ;
Abstract

A method of position recognition, includes a step of obtaining a gray image by picking up an image of an object by an image pickup device; a step of scanning the gray image by a profile scanning window composed of a plurality of gray-level detection areas which cross a scanning profile corresponding to a profile of the object on the gray image and using to measure a gray-level representative value of an inner-side gray-level detection area and a gray-level representative value of an outer-side gray-level detection area which are inside and outside of the scanning profile; a step of calculating for each gray-level detection area an absolute value of a difference between the measured gray-level representative value of an inner-side gray-level detection area and the measured gray-level representative value of an outer-side gray-level detection area, and a step of detecting a position of the profile scanning window where a number of such gray-level detection areas in which the absolute value is greater than a specified gray-level threshold value becomes a maximum, as a position of the object.

Find Patent Forward Citations

Takano, Misuzu. (1999). Method for position recognition (U.S. Patent No. 5881167). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5881167

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