로컬 디밍 백라이트용 영상 컨트라스트 제어방법 및 그 장치
    1.
    发明授权
    로컬 디밍 백라이트용 영상 컨트라스트 제어방법 및 그 장치 有权
    用于控制本地调光背光的图像对比度的方法及其装置

    公开(公告)号:KR101024058B1

    公开(公告)日:2011-03-22

    申请号:KR1020090095785

    申请日:2009-10-08

    Inventor: 김기두 정진영

    CPC classification number: G02F1/133611 G06T7/41 G06T2207/20021 G09G5/10

    Abstract: PURPOSE: A method for controlling image contrast for a local dimming backlight and apparatus thereof is provided to make the configuration of hardware by using a histogram extension method of only some pixels of the sub block. CONSTITUTION: In a method for controlling image contrast for a local dimming backlight and apparatus thereof, an RGB image is transformed to a Y-Cb-Cr image(S100). A luminance component is extracted from the Y-Cb-Cr image(S102). The whole brightness average value of the Y-Cb-Cr image is calculated. The size of the Y-Cb-Cr image is portioned to a sub block size(S104). A brightness average value and standard deviation information at each sub block are calculated(S106).

    Abstract translation: 目的:提供一种用于控制局部调光背光的图像对比度的方法及其装置,以通过仅使用子块的一些像素的直方图扩展方法来进行硬件的配置。 构成:在用于控制局部调光背光的图像对比度的方法及其装置中,将RGB图像变换为Y-Cb-Cr图像(S100)。 从Y-Cb-Cr图像中提取亮度分量(S102)。 计算Y-Cb-Cr图像的整体亮度平均值。 将Y-Cb-Cr图像的大小分割为子块大小(S104)。 计算每个子块的亮度平均值和标准偏差信息(S106)。

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