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 8155473 B1

PDF
Full Text
Expired
Date of Patent:
Apr. 10, 2012

Filed:

Oct. 08, 2009
Applicant:

Manabu Kido, Osaka, JP;

Inventor:

Manabu Kido, Osaka, JP;

Assignee:

Keyence Corporation, Osaka, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K 9/40 (2006.01); G06K 9/36 (2006.01);
U.S. Cl.
CPC ...
Abstract

There is provided a method for deciding an image data reduction ratio in image processing which enables performance of stable positioning even on an unclear image, the method being a method for deciding an image data reduction ratio in image processing where an object to be searched that is similar to a pre-registered image is searched to be positioned out of the image to be searched by use of a pattern model corresponding to the registered image, the method including the steps of: computing a sharpness of each edge point based on the edge points with reference to an edge image where the edge points are extracted from image date; and deciding an image data reduction ratio based on each edge sharpness such that positional accuracy of the edge points becomes higher than a predetermined value.


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