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    OPTIMAL SEPARABLE ADAPTIVE LOOP FILTER
    1.
    发明申请
    OPTIMAL SEPARABLE ADAPTIVE LOOP FILTER 有权
    最佳分离自适应滤波器

    公开(公告)号：US20110249725A1

    公开(公告)日：2011-10-13

    申请号：US13071258

    申请日：2011-03-24

    申请人： Cheung Auyeung ,  Ali Tabatabai ,  Minh Do

    发明人： Cheung Auyeung ,  Ali Tabatabai ,  Minh Do

    IPC分类号： H04N7/26

    CPC分类号： H04N7/26978 ,  H04N19/117 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/192 ,  H04N19/82 ,  H04N19/96

    摘要： An adaptive loop filter utilizing separable filters within a quadtree-based adaptive loop filter (QALF). The filters for at least the P and B pictures are replaced with a separable filter to provide Separable QALF (SQALF). In a preferred embodiment the filter comprises a Wiener filter as a best fit approximation of the non-separable filter. In response to decoding with the SQALF approach, computational complexity in the decoder is reduced without lowering perceived visual quality. Estimation of the separable filter is obtained in the encoder by iteratively minimizing the sum of squares error with the separable filter. The SQALF filtering is described within a video decoder.

    摘要翻译： 一种利用基于四叉树的自适应环路滤波器（QALF）中的可分离滤波器的自适应环路滤波器。 用于至少P和B图像的滤波器被替换为可分离滤波器以提供可分离的QALF（SQALF）。 在优选实施例中，滤波器包括作为不可分离滤波器的最佳拟合近似的维纳滤波器。 响应于使用SQALF方法的解码，解码器中的计算复杂度降低而不降低感知的视觉质量。 通过迭代地使可分离滤波器的平方和误差最小化，可以在编码器中获得可分离滤波器的估计。 在视频解码器中描述了SQALF滤波。

    FAST ALGORITHM ADAPTIVE INTERPOLATION FILTER (AIF)
    3.
    发明申请
    FAST ALGORITHM ADAPTIVE INTERPOLATION FILTER (AIF) 审中-公开
    快速算法自适应滤波器（AIF）

    公开(公告)号：US20120044988A1

    公开(公告)日：2012-02-23

    申请号：US12859070

    申请日：2010-08-18

    申请人： Cheung Auyeung ,  Ali Tabatabai

    发明人： Cheung Auyeung ,  Ali Tabatabai

    IPC分类号： H04N7/12

    CPC分类号： H04N19/523 ,  H04N19/117 ,  H04N19/147 ,  H04N19/176 ,  H04N19/194 ,  H04N19/61

    摘要： An apparatus and method are taught for estimating an optimized sub-pixel interpolation filter using iterative and non-iterative estimations as needed for sub-pixel motion compensation and motion estimation in a video codec for improving coding efficiency. Motion vector information and mode decisions are passed from the first encoding stage which uses predetermined interpolation to at least a second encoding stage which uses an estimated adaptive interpolation filter determined during the first encoding stage. Processing overhead is reduced within the subsequent stages. Embodiments are described in which additional stages perform iterative encoding and estimation of interpolation filter in an n-th iteration.

    摘要翻译： 教导了一种装置和方法，用于根据视频编解码器中的子像素运动补偿和运动估计所需的迭代和非迭代估计来估计优化的子像素内插滤波器，以提高编码效率。 运动矢量信息和模式决定从使用预定插值的第一编码级传递到使用在第一编码阶段期间确定的估计自适应内插滤波器的至少第二编码级。 处理开销在后续阶段减少。 描述了其中附加级在第n次迭代中执行内插滤波器的迭代编码和估计的实施例。

    ITERATIVE COMPUTATION OF ADAPTIVE INTERPOLATION FILTER
    4.
    发明申请
    ITERATIVE COMPUTATION OF ADAPTIVE INTERPOLATION FILTER 失效
    自适应插值滤波器的迭代计算

    公开(公告)号：US20110305276A1

    公开(公告)日：2011-12-15

    申请号：US12797873

    申请日：2010-06-10

    申请人： Cheung Auyeung ,  Ali Tabatabai

    发明人： Cheung Auyeung ,  Ali Tabatabai

    IPC分类号： H04N11/02

    CPC分类号： H04N19/523 ,  H04N19/117 ,  H04N19/172 ,  H04N19/192

    摘要： The invention is an apparatus and method for estimating an optimized sub-pixel interpolation filter using iterative estimations as needed for sub-pixel motion compensation and motion estimation in a video codec for improving coding efficiency. Multiple iterations of adaptive interpolation filter estimation are performed including more than one iteration based on sub-pixel motion vectors. During testing of the inventive apparatus and method on various video segments, average bit rate reductions were exhibited of approximately 5%.

    摘要翻译： 本发明是一种用于根据视频编解码器中的子像素运动补偿和运动估计所需的迭代估计来估计优化的子像素内插滤波器的装置和方法，用于提高编码效率。 执行自适应内插滤波估计的多次迭代，其包括基于子像素运动矢量的多次迭代。 在针对各种视频片段的本发明装置和方法的测试期间，显示出大约5％的平均比特率降低。

    METHOD TO OPTIMIZE THE TRANSFORMS AND/OR PREDICTIONS IN A VIDEO CODEC
    6.
    发明申请
    METHOD TO OPTIMIZE THE TRANSFORMS AND/OR PREDICTIONS IN A VIDEO CODEC 有权
    优化视频编解码器中的变换和/或预测的方法

    公开(公告)号：US20120195377A1

    公开(公告)日：2012-08-02

    申请号：US13019068

    申请日：2011-02-01

    申请人： Cheung Auyeung ,  Ali Tabatabai

    发明人： Cheung Auyeung ,  Ali Tabatabai

    IPC分类号： H04N7/12

    CPC分类号： H04N19/11 ,  H04N19/122 ,  H04N19/147 ,  H04N19/176 ,  H04N19/192

    摘要： A joint optimization iterative algorithm determines optimized mode pairs. Each mode pair includes an intra-predictor and a transform pair that are iteratively modified to determine an optimized intra-predictor and an optimized transform that forms the optimized mode pair. A set of training videos and a set of quantization parameters (QPs) are used as the base data for determining the optimized mode pairs. Each video includes a plurality of pixel blocks, herein referred to as blocks. Block statistics associated with each mode pair are accumulated by separately encoding each block using each mode pair, and selecting the best mode pair for each block according to a measured characteristic of each encoding. The accumulated block statistics are used to modify the intra-predictor and the transform within each mode pair.

    摘要翻译： 联合优化迭代算法确定优化模式对。 每个模式对包括内部预测器和变换对，其被迭代地修改以确定优化的预测器和形成优化模式对的优化变换。 使用一组训练视频和一组量化参数（QP）作为确定优化模式对的基础数据。 每个视频包括多个像素块，这里称为块。 通过使用每个模式对分别对每个模块进行编码来累积与每个模式对相关联的块统计量，并且根据每个编码的测量特性为每个块选择最佳模式对。 累积的块统计量用于修改每个模式对内的预测器和变换。

    Method to optimize the transforms and/or predictions in a video codec
    7.
    发明授权
    Method to optimize the transforms and/or predictions in a video codec 有权
    优化视频编解码器中的变换和/或预测的方法

    公开(公告)号：US09066097B2

    公开(公告)日：2015-06-23

    申请号：US13019068

    申请日：2011-02-01

    申请人： Cheung Auyeung ,  Ali Tabatabai

    发明人： Cheung Auyeung ,  Ali Tabatabai

    IPC分类号： H04N11/02 ,  H04N11/04 ,  H04N19/11 ,  H04N19/176 ,  H04N19/147 ,  H04N19/122 ,  H04N19/192

    CPC分类号： H04N19/11 ,  H04N19/122 ,  H04N19/147 ,  H04N19/176 ,  H04N19/192

    摘要： A joint optimization iterative algorithm determines optimized mode pairs. Each mode pair includes an intra-predictor and a transform pair that are iteratively modified to determine an optimized intra-predictor and an optimized transform that forms the optimized mode pair. A set of training videos and a set of quantization parameters (QPs) are used as the base data for determining the optimized mode pairs. Each video includes a plurality of pixel blocks, herein referred to as blocks. Block statistics associated with each mode pair are accumulated by separately encoding each block using each mode pair, and selecting the best mode pair for each block according to a measured characteristic of each encoding. The accumulated block statistics are used to modify the intra-predictor and the transform within each mode pair.

    摘要翻译： 联合优化迭代算法确定优化模式对。 每个模式对包括内部预测器和变换对，其被迭代地修改以确定优化的预测器和形成优化模式对的优化变换。 使用一组训练视频和一组量化参数（QP）作为确定优化模式对的基础数据。 每个视频包括多个像素块，这里称为块。 通过使用每个模式对分别对每个模块进行编码来累积与每个模式对相关联的块统计量，并且根据每个编码的测量特性为每个块选择最佳模式对。 累积的块统计量用于修改每个模式对内的预测器和变换。

    Iterative computation of adaptive interpolation filter
    8.
    发明授权
    Iterative computation of adaptive interpolation filter 失效
    自适应插值滤波器的迭代计算

    公开(公告)号：US08553763B2

    公开(公告)日：2013-10-08

    申请号：US12797873

    申请日：2010-06-10

    申请人： Cheung Auyeung ,  Ali Tabatabai

    发明人： Cheung Auyeung ,  Ali Tabatabai

    IPC分类号： H04N7/12

    CPC分类号： H04N19/523 ,  H04N19/117 ,  H04N19/172 ,  H04N19/192

    摘要： The invention is an apparatus and method for estimating an optimized sub-pixel interpolation filter using iterative estimations as needed for sub-pixel motion compensation and motion estimation in a video codec for improving coding efficiency. Multiple iterations of adaptive interpolation filter estimation are performed including more than one iteration based on sub-pixel motion vectors. During testing of the inventive apparatus and method on various video segments, average bit rate reductions were exhibited of approximately 5%.

    摘要翻译： 本发明是一种用于根据视频编解码器中的子像素运动补偿和运动估计所需的迭代估计来估计优化的子像素内插滤波器的装置和方法，用于提高编码效率。 执行自适应内插滤波估计的多次迭代，其包括基于子像素运动矢量的多次迭代。 在针对各种视频片段的本发明装置和方法的测试期间，显示出大约5％的平均比特率降低。

    Optimal separable adaptive loop filter
    9.
    发明授权
    Optimal separable adaptive loop filter 有权
    最优可分离自适应环路滤波器

    公开(公告)号：US08787449B2

    公开(公告)日：2014-07-22

    申请号：US13071258

    申请日：2011-03-24

    申请人： Cheung Ayeung ,  Ali Tabatabai ,  Minh Do

    发明人： Cheung Ayeung ,  Ali Tabatabai ,  Minh Do

    IPC分类号： H04B1/66 ,  H04N7/26

    CPC分类号： H04N7/26978 ,  H04N19/117 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/192 ,  H04N19/82 ,  H04N19/96

    摘要： An adaptive loop filter utilizing separable filters within a quadtree-based adaptive loop filter (QALF). The filters for at least the P and B pictures are replaced with a separable filter to provide Separable QALF (SQALF). In a preferred embodiment the filter comprises a Wiener filter as a best fit approximation of the non-separable filter. In response to decoding with the SQALF approach, computational complexity in the decoder is reduced without lowering perceived visual quality. Estimation of the separable filter is obtained in the encoder by iteratively minimizing the sum of squares error with the separable filter. The SQALF filtering is described within a video decoder.

    摘要翻译： 一种利用基于四叉树的自适应环路滤波器（QALF）中的可分离滤波器的自适应环路滤波器。 用于至少P和B图像的滤波器被替换为可分离滤波器以提供可分离的QALF（SQALF）。 在优选实施例中，滤波器包括作为不可分离滤波器的最佳拟合近似的维纳滤波器。 响应于使用SQALF方法的解码，解码器中的计算复杂度降低而不降低感知的视觉质量。 通过迭代地使可分离滤波器的平方和误差最小化，可以在编码器中获得可分离滤波器的估计。 在视频解码器中描述了SQALF滤波。