公开(公告)号：US20090278961A1

公开(公告)日：2009-11-12

申请号：US12116769

申请日：2008-05-07

申请人： Kamini Kanta Mohanty ,  Venkatagiri Subbaraya Rao ,  Jeremy Craig Wilson

发明人： Kamini Kanta Mohanty ,  Venkatagiri Subbaraya Rao ,  Jeremy Craig Wilson

IPC分类号： H04N5/217

CPC分类号： H04N9/045 ,  G06T5/002 ,  G06T5/20 ,  G06T5/50 ,  G06T2207/10016 ,  G06T2207/10024 ,  G06T2207/20182 ,  G06T2207/20192 ,  H04N5/21 ,  H04N5/357 ,  H04N9/646

摘要： A system and method for filtering video noise is provided. Video generated under low lighting conditions is susceptible to increased noise and graininess, which increases the required storage space required for recording the noisy video. The provided system and method for filtering video noise reduces noise in low-light video by estimating the noise profile associated with at least one video frame; discriminating between chrominance noise and luminance noise in said noise profile; applying predetermined filter criteria to said chrominance noise to estimate the parameters for luminance noise filtering; applying said luminance noise filtering parameters to filter the luminance noise; and generating a first filtered output of a frame by logical combination of outputs obtained from luminance noise filter and chrominance noise filter.

摘要翻译： 提供了一种滤波视频噪声的系统和方法。 在低照明条件下产生的视频容易受到噪音和颗粒度的增加，从而增加了录制嘈杂视频所需的存储空间。 提供的用于滤波视频噪声的系统和方法通过估计与至少一个视频帧相关联的噪声分布来降低低光视频中的噪声; 鉴别所述噪声分布中的色度噪声和亮度噪声; 对所述色度噪声应用预定的滤波器标准以估计亮度噪声滤波的参数; 应用所述亮度噪声滤波参数来过滤亮度噪声; 以及通过从亮度噪声滤波器和色度噪声滤波器获得的输出的逻辑组合来产生帧的第一滤波输出。