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:
Aug. 28, 2012
Filed:
Jul. 31, 2008
Ken Utagawa, Yokohama, JP;
Masaru Muramatsu, Kawasaki, JP;
Tsuyako Matsushita, Yokohama, JP;
Nikon Corporation, Tokyo, JP;
Abstract
A white-balance imaging apparatus includes a first gradation converting unit performing gradation conversion depending on each pixel value of an original image, a second gradation converting unit performing gradation conversion based on pixel values within a predetermined range from each pixel of the original image, a selecting unit selecting a gradation conversion mode, and a determining unit determining second gradation conversion parameters for use by the second gradation converting unit, according to the selected gradation conversion mode, and determining at least one of first gradation conversion parameters for use by the first gradation converting unit and an exposure amount in an exposure amount adjusting part which can adjust the exposure amount, according to the selected gradation conversion mode. Therefore, it is possible to correct the dark area gradation of an image while maintaining brightness of the whole image, and to realize preferable gradation conversion.