专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US09444977B2 Method and device for adaptive noise measurement of a video signal 有权
标题翻译：视频信号自适应噪声测量方法和装置
公开(公告)号：US09444977B2
公开(公告)日：2016-09-13
申请号：US13190807
申请日：2011-07-26
申请人： Frank Moesle , Paul Springer , Gregor Schewior
发明人： Frank Moesle , Paul Springer , Gregor Schewior
IPC分类号： H04N5/21 , H04N17/00 , H04N5/14
CPC分类号： H04N5/21 , H04N5/145 , H04N17/004
摘要： The present invention relates to method of adaptive noise measurement of a video signal comprising a sequence of images. The proposed method comprises the steps of searching one or more spatially uniform areas within a current image, determining a spatial uniformity value of said one or more spatially uniform areas and combining said spatial uniformity values to obtain a spatial noise value representing a first measure for the amount of noise in said current image, detecting motion by comparing the current image with one or more preceding images and/or one or more succeeding images of said sequence of images by use of a motion threshold to obtain one or more motion maps indicating the amount of motion between the current image and the respective preceding or succeeding image, searching one or more static areas within said one or more motion maps, determining a temporal uniformity value for said one or more static areas by comparing image values at positions in said one or more preceding images and/or said one or more succeeding images, at which a low amount or no motion is indicated in the respective one or more motion maps, said temporal uniformity value representing a measure for the amount of noise at said positions in said current image, and combining said obtained temporal uniformity values to obtain a combined noise value representing a second measure for the amount of noise in said current image.
摘要翻译：本发明涉及包括图像序列的视频信号的自适应噪声测量方法。所提出的方法包括以下步骤：搜索当前图像内的一个或多个空间均匀区域，确定所述一个或多个空间均匀区域的空间均匀度值，并组合所述空间均匀度值以获得空间噪声值，所述当前图像中的噪声量，通过使用运动阈值比较当前图像与一个或多个先前图像和/或所述图像序列的一个或多个后续图像来检测运动，以获得指示量的一个或多个运动图在当前图像和相应的前一个或后续图像之间的运动，搜索所述一个或多个运动图中的一个或多个静态区域，通过比较所述一个或多个静态区域中的位置的图像值，确定所述一个或多个静态区域的时间均匀度值，更多的先前图像和/或所述一个或多个后续图像，其中在相应的图像中指示低量或不运动所述时间均匀度值表示所述当前图像中的所述位置处的噪声量的度量，并且组合所获得的时间均匀性值以获得表示所述电流中的噪声量的第二测量值的组合噪声值图片。

2. 发明申请

US20120019667A1 METHOD AND DEVICE FOR ADAPTIVE NOISE MEASUREMENT OF A VIDEO SIGNAL 有权
标题翻译：用于视频信号的自适应噪声测量的方法和装置
公开(公告)号：US20120019667A1
公开(公告)日：2012-01-26
申请号：US13190807
申请日：2011-07-26
申请人： Frank MOESLE , Paul Springer , Gregor Schewior
发明人： Frank MOESLE , Paul Springer , Gregor Schewior
IPC分类号： H04N17/00
CPC分类号： H04N5/21 , H04N5/145 , H04N17/004
摘要： The present invention relates to method of adaptive noise measurement of a video signal comprising a sequence of images. The proposed method comprises the steps of searching one or more spatially uniform areas within a current image, determining a spatial uniformity value of said one or more spatially uniform areas and combining said spatial uniformity values to obtain a spatial noise value representing a first measure for the amount of noise in said current image, detecting motion by comparing the current image with one or more preceding images and/or one or more succeeding images of said sequence of images by use of a motion threshold to obtain one or more motion maps indicating the amount of motion between the current image and the respective preceding or succeeding image, searching one or more static areas within said one or more motion maps, determining a temporal uniformity value for said one or more static areas by comparing image values at positions in said one or more preceding images and/or said one or more succeeding images, at which a low amount or no motion is indicated in the respective one or more motion maps, said temporal uniformity value representing a measure for the amount of noise at said positions in said current image, and combining said obtained temporal uniformity values to obtain a combined noise value representing a second measure for the amount of noise in said current image.
摘要翻译：本发明涉及包括图像序列的视频信号的自适应噪声测量方法。所提出的方法包括以下步骤：搜索当前图像内的一个或多个空间均匀区域，确定所述一个或多个空间均匀区域的空间均匀度值，并组合所述空间均匀度值以获得空间噪声值，所述当前图像中的噪声量，通过使用运动阈值比较当前图像与一个或多个先前图像和/或所述图像序列的一个或多个后续图像来检测运动，以获得指示量的一个或多个运动图在当前图像和相应的前一个或后续图像之间的运动，搜索所述一个或多个运动图中的一个或多个静态区域，通过比较所述一个或多个静态区域中的位置的图像值，确定所述一个或多个静态区域的时间均匀度值，更多的先前图像和/或所述一个或多个后续图像，其中在相应的图像中指示低量或不运动所述时间均匀度值表示所述当前图像中的所述位置处的噪声量的度量，并且组合所获得的时间均匀性值以获得表示所述电流中的噪声量的第二测量值的组合噪声值图片。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式