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    METHOD OF DETERMINING BINARY CODEWORDS FOR TRANSFORM COEFFICIENTS
    1.
    发明申请
    METHOD OF DETERMINING BINARY CODEWORDS FOR TRANSFORM COEFFICIENTS 审中-公开

    公开(公告)号：US20190260995A1

    公开(公告)日：2019-08-22

    申请号：US16398613

    申请日：2019-04-30

    Applicant: GOOGLE TECHNOLOGY HOLDINGS LLC

    Inventor： Jian Lou ,  Xue Fang ,  Limin Wang

    IPC: H04N19/13 ,  H04N19/18 ,  H04N19/124 ,  H04N19/91

    Abstract: Generating a reconstructed may include reading a binary codeword corresponding to a transform coefficient for a sub-block of a transform unit, the transform coefficient having a quantized value, identifying a value of a parameter variable as zero in response to a determination that the transform coefficient is a first transform coefficient for the sub-block, and otherwise as an updated parameter variable value, converting the binary codeword into a symbol based on the value of the parameter variable, determining the absolute value of the transform coefficient corresponding to the symbol, wherein the quantized value for the transform coefficient is equal to or greater than a threshold value, by adding the threshold value to the symbol, including the transform coefficient in the sub-block of the transform unit, and generating a portion of the reconstructed frame based on the transform unit.

    METHOD OF DETERMINING BINARY CODEWORDS FOR TRANSFORM COEFFICIENTS
    2.
    发明申请
    METHOD OF DETERMINING BINARY CODEWORDS FOR TRANSFORM COEFFICIENTS 有权

    公开(公告)号：US20170237995A1

    公开(公告)日：2017-08-17

    申请号：US15498548

    申请日：2017-04-27

    Applicant: GOOGLE TECHNOLOGY HOLDINGS LLC

    Inventor： Jian Lou ,  Limin Wang

    IPC: H04N19/18 ,  H04N19/91 ,  H04N19/21

    CPC classification number: H04N19/18 ,  H04N19/21 ,  H04N19/60 ,  H04N19/70 ,  H04N19/91

    Abstract: Decoding a symbol may include decoding a binary codeword from an encoded video stream and decoding a symbol from the binary codeword, wherein the binary codeword is a binary codeword generated by an encoder for the symbol by determining a truncated rice prefix for a symbol, the symbol having a parameter variable, in response to a determination that the parameter variable is greater than zero, determining a truncated rice suffix for the symbol and concatenating the end of the truncated rice prefix with the truncated rice suffix to determine a main prefix, and in response to a determination that the main prefix is the same as a comparison string, wherein the comparison string is a bin string with each bin set to “1”, determining a main suffix for the symbol by concatenating the end of the main prefix with the main suffix to determine the binary codeword for the symbol.

    Explicit way for signaling a collocated picture for high efficiency video coding
    3.
    发明授权
    Explicit way for signaling a collocated picture for high efficiency video coding 有权
    用于向高效率视频编码发送并置图像的显式方式

    公开(公告)号：US09350992B2

    公开(公告)日：2016-05-24

    申请号：US13680531

    申请日：2012-11-19

    Applicant: Google Technology Holdings LLC

    Inventor： Yue Yu ,  Krit Panusopone ,  Limin Wang

    IPC: H04N19/103 ,  H04N19/174 ,  H04N19/577 ,  H04N19/50 ,  H04N19/70

    CPC classification number: H04N19/50 ,  H04N19/103 ,  H04N19/174 ,  H04N19/577 ,  H04N19/70

    Abstract: A system is provided for determining a collocated reference picture to enable encoding and decoding of a current picture for high efficiency video coding (HEVC). The collocated picture is identified by accessing syntax that can include an index for a list0 and a list1, a reference picture set number indicating the number of pictures in list0 and list1, and a flag indicating if the collocated picture is in list0 or list1. The system can further use slice type to determine if both list0 and list1 should be accessed.

    Abstract translation: 提供了一种用于确定并置参考图像以使得能够对用于高效率视频编码（HEVC）的当前图像进行编码和解码的系统。 通过访问可以包括list0和list1的索引的语法来标识并置图像，指示list0和list1中的图片数量的参考图片集编号，以及指示并置图片是否在list0或list1中的标志。 系统可以进一步使用切片类型来确定是否应该访问list0和list1。

    Signaling of temporal motion vector predictor (MVP) enable flag
    4.
    发明授权
    Signaling of temporal motion vector predictor (MVP) enable flag 有权
    瞬时运动矢量预测器（MVP）使能标志信号

    公开(公告)号：US09319681B2

    公开(公告)日：2016-04-19

    申请号：US13862297

    申请日：2013-04-12

    Applicant: Google Technology Holdings LLC

    Inventor： Yue Yu ,  Jian Lou ,  Limin Wang

    IPC: H04N7/12 ,  H04N19/51 ,  H04N19/52 ,  H04N19/463

    CPC classification number: H04N19/00684 ,  H04N19/463 ,  H04N19/52

    Abstract: In one embodiment, a method determines an I slice in a current picture that is currently being encoded and a value for a flag to enable or disable using temporal motion vector predictors for the I slice. The value for the flag is encoded in an encoded bitstream associated with the I slice being encoded. The method then sends the encoded bitstream to a decoder where encoding the value for the flag for the I slice allows pictures that follow the I picture in a decoding order to use temporal motion vector predictors from a picture that precedes the I picture in the decoding order when temporal motion vector predictors are enabled.

    Abstract translation: 在一个实施例中，一种方法确定当前正在被编码的当前图像中的I切片，以及用于为I切片使用时间运动矢量预测器来启用或禁用标志的值。 标记的值被编码在与被编码的I切片相关联的编码比特流中。 该方法然后将编码的比特流发送到解码器，其中编码用于I切片的标志的值使得以解码顺序的I图像之后的图像以解码顺序使用来自I图像之前的图像的时间运动矢量预测值 当时间运动矢量预测器被使能时。

    Signaling of scaling list
    5.
    发明授权
    Signaling of scaling list 有权
    信号缩放列表

    公开(公告)号：US09253483B2

    公开(公告)日：2016-02-02

    申请号：US13830835

    申请日：2013-03-14

    Applicant: Google Technology Holdings LLC

    Inventor： Jian Lou ,  Limin Wang ,  Yue Yu

    IPC: H04N7/26 ,  H04N19/30 ,  H04N19/176 ,  H04N19/122 ,  H04N19/124 ,  H04N19/157 ,  H04N19/127

    CPC classification number: H04N19/30 ,  H04N19/122 ,  H04N19/124 ,  H04N19/127 ,  H04N19/157 ,  H04N19/176

    Abstract: In one embodiment, a method determines when a scaling list for a non-default quantization matrix is being used to perform quantization of one or more units of video. Transform unit sizes are determined that are not available for performing a transform of the one or more units of video. Then, the method encodes or decodes scaling list data for each of the transform unit sizes available for performing the transform of the one or more units of video. The scaling list data is for transform unit sizes not available for performing the transform of the one or more units of video are not encoded or decoded.

    Abstract translation: 在一个实施例中，一种方法确定何时使用用于非默认量化矩阵的缩放列表来执行一个或多个视频单元的量化。 确定不能用于执行一个或多个视频单元的变换的变换单位大小。 然后，该方法对可用于执行一个或多个视频单元的变换的每个变换单元大小编码或解码缩放列表数据。 缩放列表数据用于不能用于执行一个或多个视频单元的变换的变换单元大小不被编码或解码。

    Processing of pulse code modulation (PCM) parameters
    8.
    发明授权
    Processing of pulse code modulation (PCM) parameters 有权

    公开(公告)号：US10003793B2

    公开(公告)日：2018-06-19

    申请号：US13831074

    申请日：2013-03-14

    Applicant: Google Technology Holdings LLC

    Inventor： Xue Fang ,  Limin Wang

    IPC: H04N7/12 ,  G06K9/36 ,  H04N19/60 ,  H04N19/46

    CPC classification number: H04N19/46

    Abstract: In one embodiment, a method determines a pulse code modulation (PCM) flag that indicates whether a PCM mode can be used to encode or decode a portion of video. A single conditional statement is evaluated once to determine if the PCM flag indicates the PCM mode is enabled. Based on the evaluating of the single conditional statement, when the PCM flag indicates the PCM mode is enabled, the method encodes or decodes a first PCM parameter, a second PCM parameter, a third PCM parameter, a fourth PCM parameter, and a fifth PCM parameter. The first PCM parameter, the second PCM parameter, the third PCM parameter, the fourth PCM parameter, and the fifth PCM parameter are encoded or decoded consecutively without any bits or syntax between them in or from an encoded bitstream associated with the portion of video.

    Method of determining binary codewords for transform coefficients
    10.
    发明授权
    Method of determining binary codewords for transform coefficients 有权

    公开(公告)号：US09641835B2

    公开(公告)日：2017-05-02

    申请号：US13672103

    申请日：2012-11-08

    Applicant: Google Technology Holdings LLC

    Inventor： Jian Lou ,  Limin Wang

    IPC: H04N19/91 ,  H04N19/21 ,  H04N19/70 ,  H04N19/60

    CPC classification number: H04N19/18 ,  H04N19/21 ,  H04N19/60 ,  H04N19/70 ,  H04N19/91

    Abstract: A system is provided for determining a binary codeword for a symbol representing a transform coefficient within transform units (TUs) that divide up coding units (CUs) in a High Efficiency Video Coding (HEVC) system. The system determines a truncated rice prefix and, when a parameter variable is greater than zero, determines a truncated rice suffix for the symbol. The system determines a main prefix either from the truncated rice prefix alone, or from a combination of the truncated rice prefix and the truncated rice suffix. When the main prefix is the same as a comparison string, the system also determines a main suffix. The system determines the final binary codeword for the symbol either from the main prefix alone, or from a combination of the main prefix and the main suffix.

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