Invention Grant
- Patent Title: Method and apparatus for controlling contrast
- Patent Title (中): 控制对比度的方法和装置
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Application No.: US11674744Application Date: 2007-02-14
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Publication No.: US07865033B2Publication Date: 2011-01-04
- Inventor: Young-ran Han , Hyun-wook Ok , Du-sik Park , Seong-deok Lee
- Applicant: Young-ran Han , Hyun-wook Ok , Du-sik Park , Seong-deok Lee
- Applicant Address: KR Suwon-si
- Assignee: Samsung Electronics Co., Ltd.
- Current Assignee: Samsung Electronics Co., Ltd.
- Current Assignee Address: KR Suwon-si
- Agency: Sughrue Mion, PLLC
- Priority: KR10-2006-0014269 20060214
- Main IPC: G06K9/40
- IPC: G06K9/40

Abstract:
A method and apparatus for contrast control is provided. The apparatus includes a cumulative density function which provides a second cumulative density function modified from a first cumulative density function based on a first luminance histogram of an input image; a transformer function provider which provides a transform function based on the first cumulative density function and the second cumulative density function; a compensation unit which compensates the transform function based on a predetermined illumination level; and a transform unit which transforms a luminance distribution of the input image based on the compensated transform function.
Public/Granted literature
- US20080037868A1 METHOD AND APPARATUS FOR CONTROLLING CONTRAST Public/Granted day:2008-02-14
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