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:
Oct. 20, 2020
Filed:
May. 29, 2018
Canon Kabushiki Kaisha, Tokyo, JP;
Toru Tanaka, Chofu, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A first image and a second image having a smaller pixel size than the first image are acquired. Based on a pixel size of the first image, a size of a calculation area to be set on the second image is calculated. A plurality of calculation areas including a corresponding position on the second image corresponding to a position of interest on the first image, and having the calculated area size are set on the second image. In each of the plurality of calculation areas, a representative value based on density values of pixels included in the calculation area is calculated, and based on a density value of a pixel at the position of interest and a plurality of representative values, a difference value between the first and second images at the position of interest is determined.