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:
Mar. 17, 2015
Filed:
Aug. 31, 2012
Akira Kubota, Yokohama, JP;
Akira Kubota, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A low-frequency region of an output target image is specified. Luminance correction is performed with the target amount decided in advance for a pixel, among pixels included in the target image, which is included in the low-frequency region and has a luminance value equal to or smaller than a predetermined value, and the target image after the correction is output. Then, an effective correction amount is obtained based on the luminance distribution of the target image before the correction and the luminance distribution of the target image after the correction, which has been corrected with the target amount decided in advance. A luminance correction target amount for the next correction target image is decided based on the luminance distribution of the target image and the ratio of the effective correction amount to the target amount decided in advance.