Invention Grant
US08369646B2 Image correction circuit, image correction method and image display
失效
图像校正电路,图像校正方法和图像显示
- Patent Title: Image correction circuit, image correction method and image display
- Patent Title (中): 图像校正电路,图像校正方法和图像显示
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Application No.: US11743366Application Date: 2007-05-02
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Publication No.: US08369646B2Publication Date: 2013-02-05
- Inventor: Shigeru Harada
- Applicant: Shigeru Harada
- Applicant Address: JP Tokyo
- Assignee: Sony Corporation
- Current Assignee: Sony Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JPP2006-138164 20060517
- Main IPC: G06K9/40
- IPC: G06K9/40 ; G06K9/00 ; G06T5/40

Abstract:
An image correction method includes the steps of: acquiring a black-side intermediate luminance distribution as a luminance distribution in a region between a lowest luminance in a given intermediate luminance region in a luminance distribution of input image data in an image frame and a reference luminance provided in the center of the intermediate luminance region; determining a low-luminance-region input/output characteristic curve on the basis of the acquired black-side intermediate luminance distribution, the low-luminance-region input/output characteristic curve passing through a reference point, in the reference input/output characteristic line, determined in accordance with the reference luminance and through a minimum luminance point of the reference input/output characteristic line; and executing image correction on input image data having a luminance which is lower than the reference luminance on the basis of the determined low-luminance-region input/output characteristic curve.
Public/Granted literature
- US20070286533A1 IMAGE CORRECTION CIRCUIT, IMAGE CORRECTION METHOD AND IMAGE DISPLAY Public/Granted day:2007-12-13
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