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    SQUARE BLOCK PREDICTION
    41.
    发明申请
    SQUARE BLOCK PREDICTION 审中-公开
    平方块预测

    公开(公告)号：US20140198855A1

    公开(公告)日：2014-07-17

    申请号：US14153284

    申请日：2014-01-13

    申请人： QUALCOMM Incorporated

    发明人： Joel Sole Rojals ,  Marta Karczewicz

    IPC分类号： H04N19/593

    CPC分类号： H04N19/11 ,  H04N19/157 ,  H04N19/176 ,  H04N19/186 ,  H04N19/59 ,  H04N19/593 ,  H04N19/70

    摘要： Systems, devices, and methods for coding video data may limit an intra-prediction angle to predict a chroma component from a reference array. The limited intra-prediction angle used varies between a value that is less than or equal to a maximum intra-prediction angle of a luma component. The systems, devices, and methods for coding video data may code a chroma intra-coded current block based on the limited intra-prediction angle. In another example, systems devices, and methods for coding video data may extend the reference array based on reference values that are outside the reference array in a video coding scheme including a number of intra-prediction angles, store prediction values in the extended reference array, and intra-coding a current block based on at least the prediction values in the extended reference array.

    摘要翻译： 用于编码视频数据的系统，设备和方法可以限制帧内预测角度以从参考阵列预测色度分量。 所使用的有限帧内预测角度在小于或等于亮度分量的最大帧内预测角度的值之间变化。 用于编码视频数据的系统，设备和方法可以基于有限的帧内预测角度对色度帧内编码的当前块进行编码。 在另一示例中，用于编码视频数据的系统设备和方法可以基于包括多个帧内预测角度的视频编码方案中的参考阵列之外的参考值来扩展参考阵列，在扩展参考阵列中存储预测值 并且至少基于扩展参考阵列中的预测值对当前块进行帧内编码。

    COEFFICIENT LEVEL CODING
    42.
    发明申请
    COEFFICIENT LEVEL CODING 审中-公开
    系统级编码

    公开(公告)号：US20130188698A1

    公开(公告)日：2013-07-25

    申请号：US13743846

    申请日：2013-01-17

    申请人： QUALCOMM Incorporated

    发明人： Wei-Jung Chien ,  Jianle Chen ,  Joel Sole Rojals ,  Liwei Guo ,  Marta Karczewicz

    IPC分类号： H04N7/26

    CPC分类号： H04N19/176 ,  H04N19/102 ,  H04N19/103 ,  H04N19/129 ,  H04N19/13 ,  H04N19/134 ,  H04N19/18 ,  H04N19/42 ,  H04N19/61 ,  H04N19/70

    摘要： In one example, a device includes a video coder configured to code a first set of syntax elements for the coefficients of a residual block of video data, and code, using at least a portion of the first set of syntax elements as context data, a second set of syntax elements for the coefficients, wherein the first set of syntax elements each correspond to a first type of syntax element for the coefficients, and wherein the second set of syntax elements each correspond to a second, different type of syntax element for the coefficients. For example, the first set of syntax elements may comprise values indicating whether the coefficients are significant (that is, have non-zero level values), and the second set of syntax elements may comprise values indicating whether level values for the coefficients have absolute values greater than one.

    摘要翻译： 在一个示例中，设备包括视频编码器，其被配置为使用第一组语法元素的至少一部分作为上下文数据来编码视频数据的残余块的系数的第一组语法元素和代码， 用于所述系数的第二组语法元素，其中所述第一语法元素集合每个对应于所述系数的第一类型的语法元素，并且其中所述第二语法元素集合每个对应于用于所述系数的第二不同类型的语法元素 系数。 例如，第一组语法元素可以包括指示系数是否是重要的值（即，具有非零电平值）的值，并且第二组语法元素可以包括指示系数的电平值是否具有绝对值的值 大于一。

    Predictor palette initialization in palette-based video coding
    43.
    发明授权
    Predictor palette initialization in palette-based video coding 有权

    公开(公告)号：US11323733B2

    公开(公告)日：2022-05-03

    申请号：US14719260

    申请日：2015-05-21

    申请人： QUALCOMM Incorporated

    发明人： Vadim Seregin ,  Rajan Laxman Joshi ,  Marta Karczewicz ,  Wei Pu ,  Joel Sole Rojals

    IPC分类号： H04N19/105 ,  H04N19/186 ,  H04N19/176 ,  H04N19/50 ,  H04N19/119 ,  H04N19/96 ,  H04N19/157

    摘要： In an example a method of processing video data includes determining a first palette for a first block of video data that is located in a first row of blocks, generating a predictor palette for constructing at least one second palette of at least one second block of video data in the first row of blocks coded, reinitializing the predictor palette for determining a third palette of a third block of video data that is located in a second row of blocks, wherein re-initializing the predictor palette comprises re-initializing the predictor palette based on the one or more palette entries of the first palette or an initial predictor palette generated after coding the first block, determining the third palette of the third block based on the re-initialized predictor palette, and coding the third block using the third palette.

    Color index coding for palette-based video coding
    47.
    发明授权
    Color index coding for palette-based video coding 有权

    公开(公告)号：US10362333B2

    公开(公告)日：2019-07-23

    申请号：US14586820

    申请日：2014-12-30

    申请人： QUALCOMM Incorporated

    发明人： Wei Pu ,  Marta Karczewicz ,  Joel Sole Rojals ,  Liwei Guo ,  Rajan Laxman Joshi ,  Feng Zou

    IPC分类号： H04N19/583 ,  H04N19/124 ,  H04N19/176 ,  H04N19/46 ,  H04N19/593 ,  H04N19/127 ,  H04N19/14 ,  H04N19/18 ,  H04N19/94 ,  H04N19/93

    摘要： In palette-based coding, a video coder may form a so-called “palette” as a table of colors representing the video data of a given block. The video coder may code index values for one or more pixels values of a current block of video data, where the index values indicate entries in the palette that represent the pixel values of the current block. A method includes determining a palette for a block of video data, identifying escape pixel(s) not associated with any palette entries, identifying a single quantization parameter (QP) value for all escape pixels of the block for a given color channel using a QP value for non-palette based coding of transform coefficients, dequantizing each escape pixel using the identified QP value, and determining pixel values of the block using the dequantized escape pixels and index values for any pixel(s) associated with any palette entries.

    Sample adaptive offset scaling based on bit-depth
    48.
    发明授权
    Sample adaptive offset scaling based on bit-depth 有权

    公开(公告)号：US10334253B2

    公开(公告)日：2019-06-25

    申请号：US14243707

    申请日：2014-04-02

    申请人： QUALCOMM Incorporated

    发明人： Woo-Shik Kim ,  Joel Sole Rojals ,  Rajan Laxman Joshi ,  Marta Karczewicz

    IPC分类号： H04N19/176 ,  H04N19/70 ,  H04N19/117 ,  H04N19/136 ,  H04N19/186 ,  H04N19/82

    摘要： This disclosure provides systems, methods and apparatus for sample adaptive offset (SAO) scaling. For example, the apparatus may include a processor configured to determine an offset value for an SAO filter applied to video data to improve reconstruction of signal amplitudes in the video data. The processor may be further configured to determine a first value indicative of a bit depth and a second value indicative of a scale factor for the video data, to provide a scaled offset value based on applying the scale factor to the offset value, and to scale at least one color component of the video data according to the scaled offset value. The processor may also be configured to identify an edge offset category for a scaled group of neighboring pixel values, and to adjust the SAO filter based on the identified edge offset category.