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    PALETTE PREDICTOR INITIALIZATION AND MERGE FOR VIDEO CODING
    21.
    发明申请
    PALETTE PREDICTOR INITIALIZATION AND MERGE FOR VIDEO CODING 审中-公开

    公开(公告)号：US20170078683A1

    公开(公告)日：2017-03-16

    申请号：US15263686

    申请日：2016-09-13

    Applicant: QUALCOMM Incorporated

    Inventor： Vadim Seregin ,  Rajan Laxman Joshi ,  Marta Karczewicz

    IPC: H04N19/44 ,  H04N19/105 ,  H04N19/186 ,  H04N19/50

    CPC classification number: H04N19/44 ,  H04N19/105 ,  H04N19/176 ,  H04N19/186 ,  H04N19/463 ,  H04N19/50 ,  H04N19/593 ,  H04N19/70 ,  H04N19/93

    Abstract: A device for decoding video data includes a memory configured to store the video data; and one or more processors configured to receive, in a picture parameter set (PPS), a first syntax element indicating that a palette predictor is to be generated using PPS-level palette predictor initializers; receive, in the PPS, a second syntax element indicating a number of the PPS-level palette predictor initializers included in the PPS is equal to zero; and decode a block of video data based on the first syntax element and the second syntax element.

    Abstract translation: 用于解码视频数据的设备包括被配置为存储视频数据的存储器; 以及一个或多个处理器，被配置为在图像参数集（PPS）中接收指示使用PPS级调色板预测器初始化器生成调色板预测器的第一语法元素; 在PPS中接收指示包括在PPS中的PPS级调色板预测器初始化器的数量的第二语法元素等于零; 以及基于所述第一语法元素和所述第二语法元素对视频数据块进行解码。

    QUANTIZATION PARAMETER (QP) CALCULATION FOR DISPLAY STREAM COMPRESSION (DSC) BASED ON COMPLEXITY MEASURE
    22.
    发明申请
    QUANTIZATION PARAMETER (QP) CALCULATION FOR DISPLAY STREAM COMPRESSION (DSC) BASED ON COMPLEXITY MEASURE 审中-公开
    基于复杂度测量的显示流程压缩（DSC）的量化参数（QP）计算

    公开(公告)号：US20160309149A1

    公开(公告)日：2016-10-20

    申请号：US15092434

    申请日：2016-04-06

    Applicant: QUALCOMM Incorporated

    Inventor： Vijayaraghavan Thirumalai ,  Natan Haim Jacobson ,  Rajan Laxman Joshi

    IPC: H04N19/124 ,  H04N19/129 ,  H04N19/184 ,  H04N19/176

    CPC classification number: H04N19/124 ,  H04N19/129 ,  H04N19/14 ,  H04N19/176 ,  H04N19/184 ,  H04N19/46 ,  H04N19/61

    Abstract: Techniques for quantization parameter (QP) for display stream compression (DSC) based on complexity measure are disclosed. In one aspect, a method for determining a QP value includes determining a complexity value of a plurality of previous blocks and selecting a technique from a plurality of defined techniques for calculating a QP adjustment value for a current block based on the determined complexity value. The method may further include calculating the QP adjustment value for the current block via the selected technique and determining the QP value for the current block based on the QP adjustment value.

    Abstract translation: 公开了基于复杂度测量的用于显示流压缩（DSC）的量化参数（QP）技术。 一方面，用于确定QP值的方法包括确定多个先前块的复杂度值，并且根据所确定的复杂度值从多个定义的技术中选择用于计算当前块的QP调整值的技术。 该方法还可以包括经由所选择的技术计算当前块的QP调整值，并且基于QP调整值确定当前块的QP值。

    Two level last significant coefficient (LSC) position coding
    23.
    发明授权
    Two level last significant coefficient (LSC) position coding 有权
    两级最后有效系数（LSC）位置编码

    公开(公告)号：US09445132B2

    公开(公告)日：2016-09-13

    申请号：US14021589

    申请日：2013-09-09

    Applicant: QUALCOMM Incorporated

    Inventor： Liwei Guo ,  Marta Karczewicz ,  Joel Sole Rojals ,  Wei-Jung Chien ,  Rajan Laxman Joshi

    IPC: G06K9/72 ,  H04N19/91 ,  H04N19/60 ,  H04N19/13 ,  H04N19/129 ,  H04N19/18

    CPC classification number: H04N19/91 ,  H04N19/129 ,  H04N19/13 ,  H04N19/18 ,  H04N19/60

    Abstract: In some examples, a video coder employs a two-level technique to code information that identifies a position within the block of transform coefficients of one of the coefficients that is a last significant coefficient (LSC) for the block according to a scanning order associated with the block of transform coefficients. For example, a video coder may code a sub-block position that identifies a position of one of the sub-blocks that includes the LSC within the block, and code a coefficient position that identifies a position of the LSC within the sub-block that includes the LSC.

    Abstract translation: 在一些示例中，视频编码器采用两级技术来编码信息，该信息根据与该数据块相关联的扫描顺序来识别作为该块的最后有效系数（LSC）的一个系数的变换系数块内的位置 变换系数块。 例如，视频编码器可以对在块内标识包括LSC的子块之一的位置的子块位置进行编码，并对识别子块内的LSC的位置的系数位置进行编码， 包括LSC。

    Coding of significance flags
    27.
    发明授权
    Coding of significance flags 有权
    重要标志编码

    公开(公告)号：US09350998B2

    公开(公告)日：2016-05-24

    申请号：US13929287

    申请日：2013-06-27

    Applicant: QUALCOMM Incorporated

    Inventor： Rajan Laxman Joshi ,  Joel Sole Rojals ,  Marta Karczewicz

    IPC: H04N7/12 ,  G06K9/46 ,  H04N19/60 ,  H04N19/13 ,  H04N19/18 ,  H04N19/463

    CPC classification number: H04N19/60 ,  H04N19/13 ,  H04N19/18 ,  H04N19/463

    Abstract: A video coder determines, based at least in part on a distance between a current sub-block of a transform coefficient block and a sub-block that contains a last significant coefficient (LSC) of the transform coefficient block, coding contexts for significance flags for transform coefficients of the current sub-block. Furthermore, the video coder entropy codes, based on the coding contexts for the significance flags for the transform coefficients of the current sub-block, the significance flags for the transform coefficients of the current sub-block.

    Abstract translation: 视频编码器至少部分地基于变换系数块的当前子块与包含变换系数块的最后有效系数（LSC）的子块之间的距离来确定用于显示标志的编码上下文 变换当前子块的系数。 此外，视频编码器基于当前子块的变换系数的有效标志的编码上下文，对当前子块的变换系数的有效标志进行熵编码。

    Signaling long-term reference pictures for video coding
    28.
    发明授权
    Signaling long-term reference pictures for video coding 有权
    用于视频编码的信令长期参考图片

    公开(公告)号：US09332255B2

    公开(公告)日：2016-05-03

    申请号：US13924016

    申请日：2013-06-21

    Applicant: QUALCOMM Incorporated

    Inventor： Adarsh Krishnan Ramasubramonian ,  Ye-Kui Wang ,  Rajan Laxman Joshi ,  Ying Chen

    IPC: H04N19/00 ,  H04N19/196 ,  H04N19/44 ,  H04N19/58 ,  H04N19/70 ,  H04N19/463 ,  H04N19/573

    CPC classification number: H04N19/44 ,  H04N19/196 ,  H04N19/463 ,  H04N19/573 ,  H04N19/58 ,  H04N19/70

    Abstract: A video decoder may be configured to decode a first value representative of a difference between a base most significant bits (MSBs) value of a picture order count (POC) value of a current picture of video data and a first MSBs value of a first POC value of a first long-term reference picture of the video data, decode a second value representative of a difference between a second MSBs value of a second POC value of a second long-term reference picture of the video data and the first MSBs value, wherein the first POC value and the second POC value have different least significant bits values, and decode at least a portion of a current picture of the video data relative to at least one of the first long-term reference picture and the second long-term reference picture.

    Abstract translation: 视频解码器可以被配置为对表示视频数据的当前图像的图像顺序计数（POC）值的最基本最高有效位（POC）值与第一POC的第一MSB值之间的差的第一值进行解码 视频数据的第一长期参考图像的值，对表示视频数据的第二长期参考图片的第二POC值的第二MSB值与第一MSB值之间的差的第二值进行解码， 其中所述第一POC值和所述第二POC值具有不同的最低有效位值，并且相对于所述第一长期参考图片和所述第二长期参考图片中的至少一个来解码所述视频数据的当前图片的至少一部分 参考图片。

    8-point inverse discrete cosine transform including odd and even portions for media data coding
    29.
    发明授权
    8-point inverse discrete cosine transform including odd and even portions for media data coding 有权
    包括用于媒体数据编码的奇数和偶数部分的8点逆离散余弦变换

    公开(公告)号：US09319685B2

    公开(公告)日：2016-04-19

    申请号：US13765040

    申请日：2013-02-12

    Applicant: Qualcomm Incorporated

    Inventor： Yuriy Reznik ,  Rajan Laxman Joshi ,  Marta Karczewicz

    IPC: H04N7/12 ,  H04N19/625 ,  G06F17/14 ,  H04N19/60

    CPC classification number: H04N19/625 ,  G06F17/147 ,  H04N19/60

    Abstract: In general, techniques are described for implementing an 8-point inverse discrete cosine transform (IDCT). An apparatus comprising an 8-point inverse discrete cosine transform (IDCT) hardware unit may implement these techniques to transform media data from a frequency domain to a spatial domain. The 8-point IDCT hardware unit includes an even portion comprising factors A, B that are related to a first scaled factor (μ) in accordance with a first relationship. The 8-point IDCT hardware unit also includes an odd portion comprising third, fourth, fifth and sixth internal factors (G, D, E, Z) that are related to a second scaled factor (η) in accordance with a second relationship. The first relationship relates the first scaled factor to the first and second internal factors. The second relationship relates the second scaled factor to the third, fourth, fifth and sixth internal factors.

    Abstract translation: 通常，描述了用于实现8点逆离散余弦变换（IDCT）的技术。 包括8点逆离散余弦变换（IDCT）硬件单元的装置可实施这些技术以将媒体数据从频域转换为空间域。 8点IDCT硬件单元包括与根据第一关系的第一缩放因子（μ）相关的因子A，B的偶数部分。 8点IDCT硬件单元还包括与根据第二关系的第二比例因子（＆eegr）相关的第三，第四，第五和第六内部因素（G，D，E，Z）的奇数部分。 第一个关系将第一个缩放因子与第一个和第二个内部因素相关联。 第二个关系将第二个比例因素与第三个，第四个，第五个和第六个内部因素联系起来。

    NON-UNIFORM EXPONENTIAL-GOLOMB CODES FOR PALETTE MODE CODING
    30.
    发明申请
    NON-UNIFORM EXPONENTIAL-GOLOMB CODES FOR PALETTE MODE CODING 审中-公开
    用于PALETTE模式编码的非均匀性指数 - 高尔夫编码

    公开(公告)号：US20160100177A1

    公开(公告)日：2016-04-07

    申请号：US14875486

    申请日：2015-10-05

    Applicant: QUALCOMM Incorporated

    Inventor： Wei Pu ,  Marta Karczewicz ,  Feng Zou ,  Rajan Laxman Joshi ,  Vadim Seregin ,  Joel Sole Rojals

    IPC: H04N19/186 ,  H04N19/44 ,  H04N19/176

    CPC classification number: H04N19/186 ,  H03M7/40 ,  H04N19/176 ,  H04N19/593 ,  H04N19/61 ,  H04N19/70 ,  H04N19/91 ,  H04N19/93 ,  H04N19/94

    Abstract: In an example, a method of decoding video data using palette mode may include receiving a palette mode encoded block of video data of a picture. The method may include receiving encoded palette mode information for the palette mode encoded block of video data. The encoded palette mode information may be encoded according to a kth order non-uniform truncated exponential-Golomb (TEGk) coding scheme and includes a unary prefix code word and a suffix code word. The method may include entropy decoding the encoded palette mode information using the kth order non-uniform truncated exponential-Golomb (TEGk) coding scheme. The kth order non-uniform TEGk coding scheme is different from a kth order exponential-Golomb (EGk) coding scheme and a kth order truncated exponential-Golomb (TEGk) coding scheme. The method may include decoding the palette mode encoded block of video data using the decoded palette mode information.

    Abstract translation: 在一个示例中，使用调色板模式对视频数据进行解码的方法可以包括接收图片的视频数据的调色板模式编码块。 该方法可以包括接收用于调色板模式编码的视频数据块的编码调色板模式信息。 编码调色板模式信息可以根据第k阶非均匀截取指数 - 哥伦布（TEGK）编码方案进行编码，并且包括一字前缀码字和后缀码字。 该方法可以包括使用第k阶非均匀截断指数哥伦布（TEGK）编码方案熵解码编码的调色板模式信息。 第k阶非均匀TEGK编码方案与第k阶指数 - 哥伦布（EGK）编码方案和第k阶截取指数 - 哥伦布（TEGK）编码方案不同。 该方法可以包括使用解码的调色板模式信息解码调色板模式编码的视频数据块。

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