Invention Grant
- Patent Title: Image processing apparatus and control method thereof
- Patent Title (中): 图像处理装置及其控制方法
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Application No.: US13154749Application Date: 2011-06-07
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Publication No.: US08797347B2Publication Date: 2014-08-05
- Inventor: Norihiko Miyachi , Osamu Sagano , Makiko Mori
- Applicant: Norihiko Miyachi , Osamu Sagano , Makiko Mori
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Fitzpatrick, Cella, Harper & Scinto
- Priority: JP2010-146780 20100628
- Main IPC: G09G5/00
- IPC: G09G5/00

Abstract:
A brightness control unit includes: a “feedback brightness control unit” that calculates a first gain from a corrected image data and multiplies the first gain by image data prior to correct; and a “feedforward brightness control unit” which, when a scene change is detected, calculates a second gain on the basis of a difference between the first gain which is calculated from the corrected image data and the first gain which has been multiplied by the pre-correction image data of the corrected image data in order to correct the difference, and multiplies the second gain by the corrected image data.
Public/Granted literature
- US20110317072A1 IMAGE PROCESSING APPARATUS AND CONTROL METHOD THEREOF Public/Granted day:2011-12-29
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