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.:
Date of Patent:
Jul. 27, 2021
Filed:
May. 14, 2018
Screen Holdings Co., Ltd., Kyoto, JP;
Hiroyuki Onishi, Kyoto, JP;
SCREEN HOLDINGS CO., LTD., Kyoto, JP;
Abstract
A high-frequency component removing part removes high-frequency components from a first object image obtained by picking up an image of an object and a first reference image, to acquire a second object image and a second reference image, respectively. A correction part corrects a value of each pixel of at least one of the first object image and the first reference image on the basis of a discrepancy, which is a ratio or a difference, between a value of the corresponding pixel of the second object image and a value of the corresponding pixel of the second reference image. A comparison part compares the first object image with the first reference image, to thereby detect a defect area in the first object image.