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1. 发明授权

US07734115B2 Method for filtering image noise using pattern information 失效
标题翻译：使用模式信息过滤图像噪声的方法
公开(公告)号：US07734115B2
公开(公告)日：2010-06-08
申请号：US11526479
申请日：2006-09-25
申请人： Moon-Gi Kang , Gun-Shik Shin , Chang-Won Kim , Min-Kyu Park
发明人： Moon-Gi Kang , Gun-Shik Shin , Chang-Won Kim , Min-Kyu Park
IPC分类号： G06K9/40
CPC分类号： G06T5/002 , G06T5/20
摘要： Disclosed is a method for removing image noise using pattern information, which filters noise caught by a sensor during preprocessing of a compression codec, so as to increase a compression efficiency, and noise caused by the codec during post-processing of the codec, so as to obtain high quality images. The method includes the steps of: (a) carrying out region dispersion with respect to input image signals so that the image signals are dispersed with a predetermined pixel size; (b) calculating mean brightness of the input image signals and carrying out noise dispersion with respect to the input image signals; (c) switching a low frequency and a high frequency based on image signals which are subjected to the region dispersion and the noise dispersion; (d) removing noise based on a statistic after obtaining the region average with respect to the image signals having the low frequency; and (e) removing noise based on a similarity of pixels after analyzing patterns with relation to the image signals having the high frequency.
摘要翻译：公开了一种使用图案信息去除图像噪声的方法，该图案信息在压缩编解码器的预处理期间过滤由传感器捕获的噪声，以便提高压缩效率，以及在编解码器的后处理期间由编解码器引起的噪声，从而以获得高质量的图像。该方法包括以下步骤：（a）相对于输入图像信号执行区域色散，使得图像信号以预定像素尺寸分散; （b）计算输入图像信号的平均亮度并对输入图像信号执行噪声色散; （c）基于经受区域色散和噪声色散的图像信号切换低频和高频; （d）在获得相对于具有低频率的图像信号的区域平均值之后，基于统计消除噪声; 以及（e）根据与具有高频率的图像信号分析图案之后的像素的相似度去除噪声。

2. 发明申请

US20070133895A1 Method for filtering image noise using pattern information 失效
标题翻译：使用模式信息过滤图像噪声的方法
公开(公告)号：US20070133895A1
公开(公告)日：2007-06-14
申请号：US11526479
申请日：2006-09-25
申请人： Moon-Gi Kang , Gun-Shik Shin , Chang-Won Kim , Min-Kyu Park
发明人： Moon-Gi Kang , Gun-Shik Shin , Chang-Won Kim , Min-Kyu Park
IPC分类号： G06K9/40
CPC分类号： G06T5/002 , G06T5/20
摘要： Disclosed is a method for removing image noise using pattern information, which filters noise caught by a sensor during preprocessing of a compression codec, so as to increase a compression efficiency, and noise caused by the codec during post-processing of the codec, so as to obtain high quality images. The method includes the steps of: (a) carrying out region dispersion with respect to input image signals so that the image signals are dispersed with a predetermined pixel size; (b) calculating mean brightness of the input image signals and carrying out noise dispersion with respect to the input image signals; (c) switching a low frequency and a high frequency based on image signals which are subjected to the region dispersion and the noise dispersion; (d) removing noise based on a statistic after obtaining the region average with respect to the image signals having the low frequency; and (e) removing noise based on a similarity of pixels after analyzing patterns with relation to the image signals having the high frequency.
摘要翻译：公开了一种使用图案信息去除图像噪声的方法，该图案信息在压缩编解码器的预处理期间过滤由传感器捕获的噪声，以便提高压缩效率，以及在编解码器的后处理期间由编解码器引起的噪声，从而以获得高质量的图像。该方法包括以下步骤：（a）相对于输入图像信号执行区域色散，使得图像信号以预定像素尺寸分散; （b）计算输入图像信号的平均亮度并对输入图像信号执行噪声色散; （c）基于经受区域色散和噪声色散的图像信号切换低频和高频; （d）在获得相对于具有低频率的图像信号的区域平均值之后，基于统计消除噪声; 以及（e）根据与具有高频率的图像信号分析图案之后的像素的相似度去除噪声。

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