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    CODING OF SIGNIFICANCE FLAGS
    2.
    发明申请
    CODING OF SIGNIFICANCE FLAGS 有权
    重要标志编码

    公开(公告)号：US20140003529A1

    公开(公告)日：2014-01-02

    申请号：US13929287

    申请日：2013-06-27

    Applicant: QUALCOMM Incorporated

    Inventor： Rajan Laxman JOSHI ,  Joel SOLE ROJALS ,  Marta KARCZEWICZ

    IPC: H04N7/30

    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。

    GROUP FLAG IN TRANSFORM COEFFICIENT CODING FOR VIDEO CODING
    3.
    发明申请
    GROUP FLAG IN TRANSFORM COEFFICIENT CODING FOR VIDEO CODING 有权
    用于视频编码的变换系数编码中的组标志

    公开(公告)号：US20130272414A1

    公开(公告)日：2013-10-17

    申请号：US13861319

    申请日：2013-04-11

    Applicant: QUALCOMM INCORPORATED

    Inventor： Joel SOLE ROJALS ,  Rajan Laxman JOSHI ,  Wei-Jung CHIEN ,  Jianle CHEN ,  Vadim SEREGIN ,  Marta KARCZEWICZ

    IPC: H04N7/50

    CPC classification number: H04N19/615 ,  H04N19/13 ,  H04N19/14 ,  H04N19/18 ,  H04N19/70

    Abstract: A method of decoding data indicative of a subset of transform coefficients is described. The coefficients are indicative of a block of video data. The method may include determining that no transform coefficient in the subset of transform coefficients has an absolute value greater than one, and, based on the determining, skipping one or more decoding passes on the subset of transform coefficients, the decoding passes relating to decoding level information associated with the subset of transform coefficients.

    Abstract translation: 描述了一种解码表示变换系数子集的数据的方法。 系数表示视频数据块。 该方法可以包括确定变换系数的子集中的变换系数不具有大于1的绝对值，并且基于确定，跳过变换系数子集上的一个或多个解码通过，与解码级相关的解码通过 与变换系数子集相关联的信息。

    PRECISION OF COMPUTATION AND SIGNALING OF DYNAMIC RANGE ADJUSTMENT AND COLOR REMAPPING INFORMATION
    4.
    发明申请
    PRECISION OF COMPUTATION AND SIGNALING OF DYNAMIC RANGE ADJUSTMENT AND COLOR REMAPPING INFORMATION 审中-公开

    公开(公告)号：US20190014330A1

    公开(公告)日：2019-01-10

    申请号：US16028212

    申请日：2018-07-05

    Applicant: QUALCOMM Incorporated

    Inventor： Adarsh Krishnan RAMASUBRAMONIAN ,  Joel SOLE ROJALS ,  Dmytro RUSANOVSKYY

    IPC: H04N19/186 ,  H04N19/98 ,  G06T5/00 ,  H04N19/513 ,  H04N19/159

    Abstract: An apparatus configured to process video data includes a memory and a processor in communication with the memory where the processor is configured to obtain an input picture including a color component having a first color characteristic, obtain a plurality of parameters associated with the color component of at least one sample of the input picture where the plurality of parameters are indicative of pivot points associated with a piece-wise linear function associated with the color component, determine that a value of at least one parameter of the plurality of parameters includes a negative value, apply, on the at least one sample of the input picture, the piece-wise linear function defined with the at least one parameter having a negative value, generate at least one output sample of an output picture including the color component having a second color characteristic based on the application of the piece-wise linear function.

    TRANSFORM BASIS ADJUSTMENT IN SCALABLE VIDEO CODING
    5.
    发明申请
    TRANSFORM BASIS ADJUSTMENT IN SCALABLE VIDEO CODING 审中-公开
    可扩展视频编码中的变换基础调整

    公开(公告)号：US20140064361A1

    公开(公告)日：2014-03-06

    申请号：US14014016

    申请日：2013-08-29

    Applicant: Qualcomm Incorporated

    Inventor： Marta KARCZEWICZ ,  Liwei GUO ,  Joel SOLE ROJALS

    IPC: H04N7/26

    CPC classification number: H04N19/30 ,  H04N19/12 ,  H04N19/157 ,  H04N19/176 ,  H04N19/46

    Abstract: An apparatus for coding video information according to certain aspects includes a memory unit and a processor in communication with the memory unit. The memory unit stores video information associated with a reference layer and a corresponding enhancement layer. The processor obtains residue block information based at least in part on video information associated with the reference layer and the enhancement layer. The processor determines an adjustment transform function based on a transform function associated with the video information. The processor determines a transform block based on the adjusted transform function and the residue block information.

    Abstract translation: 根据某些方面的用于编码视频信息的装置包括存储器单元和与存储器单元通信的处理器。 存储单元存储与参考层和对应的增强层相关联的视频信息。 处理器至少部分地基于与参考层和增强层相关联的视频信息获得残留块信息。 处理器基于与视频信息相关联的变换函数来确定调整变换功能。 处理器基于经调整的变换函数和残差块信息来确定变换块。

    SIGN HIDING TECHNIQUES FOR QUANTIZED TRANSFORM COEFFICIENTS IN VIDEO CODING
    6.
    发明申请
    SIGN HIDING TECHNIQUES FOR QUANTIZED TRANSFORM COEFFICIENTS IN VIDEO CODING 有权
    视频编码中量化变换系数的标志隐藏技术

    公开(公告)号：US20130272424A1

    公开(公告)日：2013-10-17

    申请号：US13863160

    申请日：2013-04-15

    Applicant: QUALCOMM INCORPORATED

    Inventor： Joel SOLE ROJALS ,  Jianle CHEN ,  Wei-Jung CHIEN ,  Marta KARCZEWICZ

    IPC: H04N7/50

    CPC classification number: H04N19/61 ,  H04N19/129 ,  H04N19/18 ,  H04N19/467 ,  H04N19/48

    Abstract: This disclosure proposes techniques for encoding and decoding transform coefficients in a video coding process. In particular, this disclosure proposes techniques determining whether or not to apply a sign data hiding process for a group of transform coefficients, and techniques for applying the sign data hiding process. In one example, this disclosure describes a method for decoding video data comprising determining a block of transform coefficients, determining whether to perform a sign data hiding process for at least one transform coefficient in the block of transform coefficients based on a single variable compared to a threshold, and decoding sign information for the block based on the determination of whether to perform the sign data hiding process.

    Abstract translation: 本公开提出了在视频编码处理中对变换系数进行编码和解码的技术。 具体地，本公开提出了确定是否对一组变换系数应用符号数据隐藏处理的技术以及用于应用符号数据隐藏处理的技术。 在一个示例中，本公开描述了一种用于对视频数据进行解码的方法，包括：确定变换系数块，确定是否对变换系数块中的至少一个变换系数执行符号数据隐藏处理，基于与 基于是否执行符号数据隐藏处理的确定，对块的阈值和解码符号信息。

    GROUPING OF BYPASS-CODED BINS FOR SAO SYNTAX ELEMENTS
    8.
    发明申请
    GROUPING OF BYPASS-CODED BINS FOR SAO SYNTAX ELEMENTS 有权
    用于SAO SYNTAX元件的旁路编码组的分组

    公开(公告)号：US20130336382A1

    公开(公告)日：2013-12-19

    申请号：US13767676

    申请日：2013-02-14

    Applicant: QUALCOMM INCORPORATED

    Inventor： Joel SOLE ROJALS ,  In Suk CHONG ,  Marta KARCZEWICZ

    IPC: H04N7/26

    CPC classification number: H04N19/136 ,  H04N19/13 ,  H04N19/184 ,  H04N19/70 ,  H04N19/82

    Abstract: A video encoder generates a sequence of sample adaptive offset (SAO) syntax elements for a coding tree block. The SAO syntax elements include regular context-adaptive binary arithmetic coding (CABAC) coded bins for a color component and bypass-coded bins for the color component. None of the bypass-coded bins is between two of the regular CABAC-coded bins in the sequence. The video encoder uses regular CABAC to encode the regular CABAC-coded bins and uses bypass coding to encode the bypass-coded bins. The video encoder outputs the SAO syntax elements in a bitstream. A video decoder receives the bitstream, uses regular CABAC to decode the regular CABAC-coded bins, uses bypass coding to decode the bypass-coded bins, and modifies a reconstructed picture based on the SAO syntax elements.

    Abstract translation: 视频编码器生成用于编码树块的采样自适应偏移（SAO）语法元素的序列。 SAO语法元素包括用于颜色分量的常规上下文自适应二进制算术编码（CABAC）编码箱和用于颜色分量的旁路编码箱。 没有一个旁路编码的存储区位于序列中的两个常规CABAC编码区间之间。 视频编码器使用常规CABAC对常规CABAC编码的存储区进行编码，并使用旁路编码对旁路编码的存储区进行编码。 视频编码器输出比特流中的SAO语法元素。 视频解码器接收比特流，使用常规CABAC来解码常规CABAC编码箱，使用旁路编码来解码旁路编码箱，并且基于SAO语法元素修改重构图像。

    UNIFORM GRANULARITY FOR QUANTIZATION MATRIX IN VIDEO CODING
    9.
    发明申请
    UNIFORM GRANULARITY FOR QUANTIZATION MATRIX IN VIDEO CODING 审中-公开
    用于量化矩阵在视频编码中的均匀度

    公开(公告)号：US20130272390A1

    公开(公告)日：2013-10-17

    申请号：US13863197

    申请日：2013-04-15

    Applicant: QUALCOMM INCORPORATED

    Inventor： Rajan Laxman JOSHI ,  Joel SOLE ROJALS ,  Marta KARCZEWICZ

    IPC: H04N7/26

    CPC classification number: H04N19/176 ,  H04N19/126 ,  H04N19/18 ,  H04N19/46

    Abstract: The techniques of this disclosure are directed toward the use of modified quantization parameter (QP) values to calculate quantized and dequantized transform coefficients of a video block with uniform QP granularity. Conventionally, when a quantization matrix is used during quantization and dequantization of transform coefficients, the quantization matrix entries act as scale factors of a quantizer step-step corresponding to a base QP value, which results in non-uniform QP granularity. To provide uniform QP granularity across all quantization matrix entries, the techniques include calculating modified QP values for transform coefficients based on associated quantization matrix entries used as offsets to a base QP value. At a video decoder, the techniques include calculating dequantized transform coefficients from quantized transform coefficients based on the modified QP values. At a video encoder, the techniques include calculating quantized transform coefficients from transform coefficients based on the modified QP values.

    Abstract translation: 本公开的技术涉及使用修改的量化参数（QP）值来计算具有均匀QP粒度的视频块的量化和去量化的变换系数。 通常，当在量化和变换系数的逆量化期间使用量化矩阵时，量化矩阵条目用作对应于基本QP值的量化器步长的比例因子，这导致不均匀的QP粒度。 为了在所有量化矩阵条目上提供均匀的QP粒度，该技术包括基于用作基本QP值的偏移的相关联的量化矩阵条目来计算变换系数的修正QP值。 在视频解码器中，技术包括基于经修改的QP值从量化变换系数计算去量化变换系数。 在视频编码器中，技术包括基于修改的QP值来计算来自变换系数的量化变换系数。

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