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1. 发明授权

US08885105B1 Systems and methods for performing region-based local contrast enhancement 有权
标题翻译：用于执行基于区域的局部对比度增强的系统和方法
公开(公告)号：US08885105B1
公开(公告)日：2014-11-11
申请号：US14148891
申请日：2014-01-07
申请人： Cyberlink Corp.
发明人： Chih-Yu Cheng , Yu-En Lin
IPC分类号： H04N9/64 , G06K9/00 , H04N9/79 , G11B27/031 , G06T5/00
CPC分类号： G06T5/008 , G06T5/40 , G06T2207/10016 , G06T2207/10024 , G06T2207/20012 , G06T2207/20021
摘要： Local contrast enhancement comprises obtaining a first frame as a reference frame and a second frame as a current frame. The reference frame is partitioned into a plurality of reference regions, and a first color mapping function is derived for at least one of the reference regions in the reference frame according to the corresponding color distribution. The first color mapping function comprises, for at least one of a predetermined set of colors, a first source color value and a first contrast-enhanced color value. The current frame is partitioned into a plurality of regions, and a second color mapping function is derived for at least one of the regions in the current frame according to the first color mapping functions of at least two of the reference regions in the reference frame. The second color mapping function is applied to generate a contrast-enhanced frame.
摘要翻译：局部对比度增强包括获得作为参考帧的第一帧和作为当前帧的第二帧。参考帧被划分为多个参考区域，并且根据相应的颜色分布为参考帧中的至少一个参考区域导出第一颜色映射函数。对于预定颜色组中的至少一个，第一颜色映射功能包括第一源颜色值和第一对比度增强颜色值。当前帧被划分成多个区域，并且根据参考帧中的至少两个参考区域的第一颜色映射函数，为当前帧中的至少一个区域导出第二颜色映射函数。应用第二颜色映射功能来生成对比度增强的帧。

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