Method and device for adaptive noise measurement of a video signal
    1.
    发明授权
    Method and device for adaptive noise measurement of a video signal 有权
    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

    CPC classification number: H04N5/21 H04N5/145 H04N17/004

    Abstract: 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.

    Abstract translation: 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。

    Method and system for detecting edges within an image
    2.
    发明授权
    Method and system for detecting edges within an image 失效
    用于检测图像边缘的方法和系统

    公开(公告)号:US08538163B2

    公开(公告)日:2013-09-17

    申请号:US12893624

    申请日:2010-09-29

    CPC classification number: G06T7/155 G06T7/13 G06T2207/20032 G06T2207/20036

    Abstract: A method for detecting edges within an image. An edge strength indicator for each pixel within the image is determined and the edge strength indicator is classified into at least three classes to generate a map having one value associated to each class. The classified map is then separated into individual maps depending on the classification. A dilation process is applied to at least a part of the individual maps. The processed and/or individual maps are finally combined by logical operation to obtain a final map indicating edges without nearby texture.

    Abstract translation: 一种用于检测图像内的边缘的方法。 确定图像内的每个像素的边缘强度指示符,并且将边缘强度指示符分类为至少三个类别,以生成具有与每个类别相关联的一个值的地图。 然后根据分类将分类图分离成单独的地图。 扩张过程适用于至少一部分个别地图。 处理的和/或单独的地图最终通过逻辑操作组合以获得指示没有附近纹理的边缘的最终地图。

    METHOD AND DEVICE FOR ADAPTIVE NOISE MEASUREMENT OF A VIDEO SIGNAL
    3.
    发明申请
    METHOD AND DEVICE FOR ADAPTIVE NOISE MEASUREMENT OF A VIDEO SIGNAL 有权
    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

    CPC classification number: H04N5/21 H04N5/145 H04N17/004

    Abstract: 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.

    Abstract translation: 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。

    METHOD AND SYSTEM FOR REDUCING BLOCKING ARTEFACTS IN COMPRESSED IMAGES AND VIDEO SIGNALS
    4.
    发明申请
    METHOD AND SYSTEM FOR REDUCING BLOCKING ARTEFACTS IN COMPRESSED IMAGES AND VIDEO SIGNALS 审中-公开
    压缩图像和视频信号中减少阻塞特征的方法和系统

    公开(公告)号:US20110123121A1

    公开(公告)日:2011-05-26

    申请号:US12895037

    申请日:2010-09-30

    CPC classification number: H04N19/117 H04N19/14 H04N19/176 H04N19/61 H04N19/86

    Abstract: The present invention relates to a coding parameter independent method for reduction of blocking artefacts in a compressed image or video signal. For this purpose, the image is analysed in the vicinity of the block boundaries in order to measure the existence and strength of blocking artefacts and to detect image areas. Based on the analysis result map information for each pixel adjacent to a block boundary is generated. The filter mode for each block boundary is adaptively determined dependent on the map information and the image is filtered depending on the chosen filter mode.

    Abstract translation: 本发明涉及用于减少压缩图像或视频信号中的阻塞伪影的编码参数独立方法。 为了这个目的,在块边界附近分析图像,以便测量阻挡伪像的存在和强度并检测图像区域。 基于与块边界相邻的每个像素的分析结果映射信息被生成。 每个块边界的滤波器模式根据地图信息自适应地确定,并且根据所选择的滤波器模式对图像进行滤波。

    Device and method for audible transient noise detection
    5.
    发明授权
    Device and method for audible transient noise detection 有权
    用于可听瞬态噪声检测的装置和方法

    公开(公告)号:US09311927B2

    公开(公告)日:2016-04-12

    申请号:US13348136

    申请日:2012-01-11

    CPC classification number: G10L21/0208 G10L21/0224 G10L21/0232 H04R2225/43

    Abstract: The present invention relates to a device and a corresponding method for audible transient noise detection in an audio signal. To avoid the detection of false positives or at least reduce the number of detected false positives a device is proposed comprising a detector configured to detect a set of transient noise candidates in time or frequency domain among a plurality of samples of said audio signal, and a selector configured to select audible transient noise candidates from said set of transient noise candidates by use of one or more selection criteria, wherein the selection criteria used for said selection are selected and/or whose parameters are at least partly set based on characteristics of said audio signal.

    Abstract translation: 本发明涉及一种用于音频信号中的可听瞬态噪声检测的装置和相应的方法。 为了避免检测到假阳性或至少减少检测到的假阳性的数量,提出了一种装置,其包括检测器,其被配置为在所述音频信号的多个样本中检测时间或频域中的一组瞬态噪声候选,并且 被配置为通过使用一个或多个选择标准从所述瞬时噪声候选集合中选择可听到的瞬态噪声候选,其中用于所述选择的选择标准被选择和/或其参数基于所述音频的特性至少部分地设置 信号。

    OBJECT BOUNDARY ACCURATE MOTION DETECTION USING HIERARCHICAL BLOCK SPLITTING AND MOTION SEGMENTATION
    6.
    发明申请
    OBJECT BOUNDARY ACCURATE MOTION DETECTION USING HIERARCHICAL BLOCK SPLITTING AND MOTION SEGMENTATION 失效
    使用分层分割和运动分割的对象边界精确运动检测

    公开(公告)号:US20090136092A1

    公开(公告)日:2009-05-28

    申请号:US12267986

    申请日:2008-11-10

    CPC classification number: H04N5/144 G06T7/215

    Abstract: The present invention is directed to an apparatus for motion segmentation in the field of motion detection, whereby an initial motion map is processed to a more accurate final motion map which identifies the non- and the movement of pixels between at least two successive images, said apparatus comprising a processing-segmentation device and a combination-logic device. In this apparatus the initial motion map is processed to three different feature maps, describing static edges, moving edges and moving flat areas between at least two successive images, respectively.The present invention is further directed to a corresponding method adapted for motion segmentation in the field of motion detection.

    Abstract translation: 本发明涉及一种用于在运动检测领域中的运动分割的装置,由此将初始运动图处理成更精确的最终运动图,其识别至少两个连续图像之间的像素的非运动和运动,所述运动图 装置,包括处理分割装置和组合逻辑装置。 在该装置中,将初始运动图处理为三个不同的特征图,分别描述至少两个连续图像之间的静态边缘,移动边缘和移动平坦区域。 本发明还涉及适用于运动检测领域的运动分割的相应方法。

    Image enhancement apparatus and method
    7.
    发明授权
    Image enhancement apparatus and method 有权
    图像增强装置及方法

    公开(公告)号:US08768069B2

    公开(公告)日:2014-07-01

    申请号:US13399405

    申请日:2012-02-17

    Abstract: The present invention relates to an image enhancement apparatus for enhancing an input image of a sequence of input images. To provide the ability to increase the resolution of an input image and/or to temporally reduce artifacts and/or noise in an input image, the apparatus comprises a motion compensation unit, a weighted selection unit, a feature analysis unit, an image model unit configured to generate a modelled image by applying an image model on said input image and/or said weighted selection image, a spatio-temporal detail signal generation unit configured to generate a detail signal from said input image and said weighted selection image, and a combination unit configured to generate said enhanced output image from said input image, said detail signal and said modelled image.

    Abstract translation: 本发明涉及一种用于增强输入图像序列的输入图像的图像增强装置。 为了提供增加输入图像的分辨率和/或在时间上减少输入图像中的伪影和/或噪声的能力,该装置包括运动补偿单元,加权选择单元,特征分析单元,图像模型单元 被配置为通过在所述输入图像和/或所述加权选择图像上应用图像模型来生成建模图像,空间 - 时间细节信号生成单元,被配置为从所述输入图像和所述加权选择图像生成细节信号,以及组合 被配置为从所述输入图像,所述细节信号和所述建模图像生成所述增强输出图像的单元。

    DEVICE AND METHOD FOR AUDIBLE TRANSIENT NOISE DETECTION
    8.
    发明申请
    DEVICE AND METHOD FOR AUDIBLE TRANSIENT NOISE DETECTION 有权
    用于可及的瞬态噪声检测的装置和方法

    公开(公告)号:US20120201390A1

    公开(公告)日:2012-08-09

    申请号:US13348136

    申请日:2012-01-11

    CPC classification number: G10L21/0208 G10L21/0224 G10L21/0232 H04R2225/43

    Abstract: The present invention relates to a device and a corresponding method for audible transient noise detection in an audio signal. To avoid the detection of false positives or at least reduce the number of detected false positives a device is proposed comprising a detector configured to detect a set of transient noise candidates in time or frequency domain among a plurality of samples of said audio signal, and a selector configured to select audible transient noise candidates from said set of transient noise candidates by use of one or more selection criteria, wherein the selection criteria used for said selection are selected and/or whose parameters are at least partly set based on characteristics of said audio signal.

    Abstract translation: 本发明涉及一种用于音频信号中的可听瞬态噪声检测的装置和相应的方法。 为了避免检测到假阳性或至少减少检测到的假阳性的数量,提出了一种装置,其包括检测器,其被配置为在所述音频信号的多个样本中检测时间或频域中的一组瞬态噪声候选,并且 被配置为通过使用一个或多个选择标准从所述瞬时噪声候选集合中选择可听到的瞬态噪声候选,其中用于所述选择的选择标准被选择和/或其参数基于所述音频的特性至少部分地设置 信号。

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