-
1.发明授权Image data recursive noise filter with reduced temporal filtering of higher spatial frequencies 失效图像数据递归噪声滤波器，具有较低空间频率的时间滤波
公开(公告)号：US5903680A
公开(公告)日：1999-05-11
申请号：US792321
申请日：1997-01-31
CPC分类号： H04N5/21
摘要： An image data recursive noise filter wherein relatively high spatial frequency components of the image data are either not filtered at all or are filtered to a lesser degree than relatively low spatial frequency components of the image data. This minimizes blurring of fine low-contrast detail and also avoids "freezing" of noise in undetailed moving areas of the image.
摘要翻译： 图像数据递归噪声滤波器，其中图像数据的相对高的空间频率分量根本不被滤波或者被滤波到比图像数据的相对低的空间频率分量更小的程度。 这可以最大程度地减少细微的低对比度细节的模糊，并且还避免了图像的未详细移动区域中的“冻结”噪声。
-
公开(公告)号：US6122016A
公开(公告)日：2000-09-19
申请号：US556694
申请日：1995-11-13
摘要： In a method of processing a video signal, including the step furnishing (11) a filtered signal in response to the video signal, the filtering is adapted (22) in dependence upon a statistical property (AC) of a modification effected by the filtering in a previous time interval of the video signal. Preferably, the filtering is adapted (22) in dependence upon an average modification (AC) effected by the filtering in a previous field or frame of the video signal.
摘要翻译： 在处理视频信号的方法中，包括步骤（11）响应于视频信号提供（11）经过滤波的信号，根据通过滤波处理的修改的统计特性（AC）适应滤波（22） 视频信号的先前时间间隔。 优选地，根据视频信号的先前场或帧中的滤波实现的平均修改（AC），滤波适应（22）。
-
公开(公告)号：US5742355A
公开(公告)日：1998-04-21
申请号：US538514
申请日：1995-10-03
摘要： In a method of processing a video signal including the steps of providing (13) a delayed signal, and furnishing (11) a filtered signal in response to the video signal and the delayed signal, only a small number of preselected frequency components and/or statistical properties is delayed in the step of providing (13) a delayed signal, in order to reduce a required storage and/or processing capacity.
摘要翻译： 在处理视频信号的方法中，包括以下步骤：提供（13）延迟信号，并响应于视频信号和延迟信号提供（11）经滤波的信号，仅有少量预选频率分量和/或 在提供（13）延迟信号的步骤中延迟了统计特性，以便减少所需的存储和/或处理能力。
-
公开(公告)号：US5715335A
公开(公告)日：1998-02-03
申请号：US223389
申请日：1994-04-05
CPC分类号： H04N5/21
摘要： In a noise reduction filter having a filter coupled to receive a plurality of input signal samples (.smallcircle.,.sym.) and furnishing noise-reduced signal samples, and a delay circuit coupled to the output of the filter and which furnishes a plurality of delayed noise reduced signal samples (X) to a further input of the filter, the samples (Pn.sub.1 . . . Pn.sub.n) applied to the filter are not directly neighboring samples.
摘要翻译： 在具有耦合以接收多个输入信号样本（+602，（+））并提供降噪信号样本的滤波器的降噪滤波器中，以及耦合到滤波器的输出的延迟电路，并且提供多个 延迟噪声降低的信号样本（X）到滤波器的另一个输入，施加到滤波器的采样（Pn1 ... Pnn）不是直接相邻的采样。
-
-
-
搜索结果
4 条记录 (耗时 0.011 秒)
