Method of coding artifacts reduction
    1.
    发明授权
    Method of coding artifacts reduction 失效
    编码人造物减少的方法

    公开(公告)号:US07027661B2

    公开(公告)日:2006-04-11

    申请号:US09995290

    申请日:2001-11-26

    IPC分类号: G06K9/40 G06K15/00

    摘要: A method to reduce coding artifacts within a discrete decoded picture includes a spatial and/or temporal filtering with respective filter characteristics dependent on an image quality value (Q). Preferably, the spatial filtering includes a deblocking filtering, wherein the deblocking filter operation decreases with an increasing image quality value (Q) and/or the deblocking filtering chooses a image quality value (Q) dependent weighting function for a pixel to be filtered according to an activity of both blocks to which common border said pixel belongs.

    摘要翻译: 减少离散解码图像内的编码伪像的方法包括取决于图像质量值(Q)的具有相应滤波器特性的空间和/或时间滤波。 优选地,空间滤波包括去块滤波,其中去块滤波器操作随着图像质量值(Q)的增加而减小,和/或去块滤波根据根据下面的方法选择要滤波的像素的图像质量值(Q)依赖加权函数 所述像素所属的共同边界的两个块的活动。

    Quality rating function for a discrete decoded picture
    2.
    发明授权
    Quality rating function for a discrete decoded picture 失效
    离散解码图像的质量评级功能

    公开(公告)号:US06996285B2

    公开(公告)日:2006-02-07

    申请号:US09964935

    申请日:2001-09-27

    IPC分类号: G06K9/46

    CPC分类号: G06T9/00

    摘要: In a method to rate a discrete decoded picture (Pin) in respect to its quality a picture quality rating function (PQRF) is calculated on basis of an information about artefacts (ARI) within the discrete decoded picture and a coding information (CRI) which was used for discrete coding the picture. Preferrably, said method is used to determine a preferred discrete picture decoding and/or postprocessing method and/or to determine a preferred discrete picture encoding and/or pre-processing method.

    摘要翻译: 在对其质量进行分散离散解码图像(P )的方法中,基于关于离散解码图像内的伪像(ARI)的信息来计算图像质量评价函数(PQRF) 以及用于对图像进行离散编码的编码信息(CRI)。 优选地,所述方法用于确定优选的离散图像解码和/或后处理方法和/或确定优选的离散图像编码和/或预处理方法。

    Method of coding artifacts reduction
    3.
    发明授权
    Method of coding artifacts reduction 失效
    编码人造物减少的方法

    公开(公告)号:US07352916B2

    公开(公告)日:2008-04-01

    申请号:US11202612

    申请日:2005-08-11

    IPC分类号: G06K9/40

    摘要: A method to reduce coding artifacts within a discrete decoded picture includes a spatial and/or temporal filtering with respective filter characteristics dependent on an image quality value (Q). Preferably, the spatial filtering includes a deblocking filtering, wherein the deblocking filter operation decreases with an increasing image quality value (Q) and/or the deblocking filtering chooses an image quality value (Q) dependent weighting function for a pixel to be filtered according to an activity of both blocks to which common border said pixel belongs.

    摘要翻译: 减少离散解码图像内的编码伪像的方法包括取决于图像质量值(Q)的具有相应滤波器特性的空间和/或时间滤波。 优选地,空间滤波包括去块滤波,其中去块滤波器操作随着图像质量值(Q)的增加而减小,和/或去块滤波根据根据下面的方法选择要滤波的像素的图像质量值(Q)依赖加权函数 所述像素所属的共同边界的两个块的活动。