公开(公告)号：US20130336395A1

公开(公告)日：2013-12-19

申请号：US13919936

申请日：2013-06-17

Applicant: Qualcomm Incorporated

Inventor： Rajan Laxman Joshi ,  Geert Van der Auwera ,  Marta Karczewicz

IPC: H04N7/26

CPC classification number: H04N19/85 ,  H04N19/127 ,  H04N19/162 ,  H04N19/176 ,  H04N19/70 ,  H04N19/82

Abstract: Techniques described herein are related to harmonizing the signaling of coding modes and filtering in video coding. In one example, a method of decoding video data is provided that includes decoding a first syntax element to determine whether PCM coding mode is used for one or more video blocks, wherein the PCM coding mode refers to a mode that codes pixel values as PCM samples. The method further includes decoding a second syntax element to determine whether in-loop filtering is applied to the one or more video blocks. Responsive to the first syntax element indicating that the PCM coding mode is used, the method further includes applying in-loop filtering to the one or more video blocks based at least in part on the second syntax element and decoding the one or more video blocks based at least in part on the first and second syntax elements.

Abstract translation: 本文描述的技术涉及协调编码模式的信令和视频编码中的滤波。 在一个示例中，提供了解码视频数据的方法，其包括对第一语法元素进行解码以确定PCM编码模式是否用于一个或多个视频块，其中PCM编码模式是将像素值编码为PCM样本的模式 。 该方法还包括解码第二语法元素以确定是否将一个或多个视频块应用于环路滤波。 响应于指示使用PCM编码模式的第一语法元素，该方法还包括至少部分地基于第二语法元素对一个或多个视频块应用循环过滤，并且基于一个或多个视频块进行解码 至少部分地基于第一和第二语法元素。

公开(公告)号：US20130329007A1

公开(公告)日：2013-12-12

申请号：US13796299

申请日：2013-03-12

Applicant: QUALCOMM INCORPORATED

Inventor： Li ZHANG ,  Ying CHEN ,  Marta Karczewicz

IPC: H04N7/26

CPC classification number: H04N19/513 ,  H04N19/52 ,  H04N19/597

Abstract: In general, techniques are described for performing motion vector prediction in 3D video coding and, more particularly for managing a candidate list of motion vector predictors (MVPs) for a block of video data. In some examples, a video coder, such as video encoder or video decoder, includes at least three motion vector predictors (MVPs) in a candidate list of MVPs for a current block in a first view of a current access unit of the video data, wherein the at least three MVPs comprise an inter-view motion vector predictor (IVMP), which is a temporal motion vector derived from a block in a second view of the current access unit or a disparity motion vector derived from a disparity vector.

Abstract translation: 通常，描述了用于在3D视频编码中执行运动矢量预测的技术，更具体地说，用于管理视频数据块的运动矢量预测器（MVP）的候选列表。 在一些示例中，诸如视频编码器或视频解码器的视频编码器在视频数据的当前存取单元的第一视图中包括用于当前块的MVP的候选列表中的至少三个运动矢量预测器（MVP） 其中所述至少三个MVP包括视角间运动向量预测器（IVMP），其是从当前访问单元的第二视图中的块导出的时间运动矢量或从视差矢量导出的视差运动矢量。

公开(公告)号：US20130259130A1

公开(公告)日：2013-10-03

申请号：US13830484

申请日：2013-03-14

Applicant: QUALCOMM INCORPORATED

Inventor： Muhammed Zeyd Coban ,  Marta Karczewicz

IPC: H04N7/36

CPC classification number: H04N19/503 ,  H04N19/463 ,  H04N19/577 ,  H04N19/70

Abstract: The techniques are generally related to the coding of weighted prediction parameters. A video coder may determine the weighted prediction parameters for a reference picture list based on coded weighted prediction parameters for another reference picture list. Examples of the reference picture list include reference picture lists constructed for coding purposes, including a combined reference picture list.

Abstract translation: 这些技术通常与加权预测参数的编码有关。 视频编码器可以基于另一参考图片列表的编码加权预测参数来确定参考图片列表的加权预测参数。 参考图片列表的示例包括为编码目的而构造的参考图片列表，包括组合的参考图片列表。

公开(公告)号：US20130188733A1

公开(公告)日：2013-07-25

申请号：US13743592

申请日：2013-01-17

Applicant: Qualcomm Incorporated

Inventor： Geert Van der Auwera ,  Ye-Kui Wang ,  Marta Karczewicz

IPC: H04N7/26

CPC classification number: H04N19/86 ,  H04N19/105 ,  H04N19/117 ,  H04N19/124 ,  H04N19/13 ,  H04N19/159 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/184 ,  H04N19/43 ,  H04N19/46 ,  H04N19/61 ,  H04N19/70

Abstract: This disclosure describes techniques for signaling deblocking filter parameters for a current slice of video data with reduced bitstream overhead. Deblocking filter parameters may be coded in one or more of a picture layer parameter set and a slice header. The techniques reduce a number of bits used to signal the deblocking filter parameters by coding a first syntax element that indicates whether deblocking filter parameters are present in both the picture layer parameter set and the slice header, and only coding a second syntax element in the slice header when both sets of deblocking filter parameters are present. Coding the second syntax element is eliminated when deblocking filter parameters are present in only one of the picture layer parameter set or the slice header. The second syntax element indicates which set of deblocking filter parameters to use to define a deblocking filter applied to a current slice.

Abstract translation: 本公开描述了用于以减少的比特流开销为视频数据的当前切片信令去块滤波器参数的信号的技术。 去块滤波器参数可以在图像层参数集和片头中的一个或多个中被编码。 这些技术通过编码表示去块滤波器参数是否存在于图像层参数集和片头中的第一语法元素来减少用于通知去块滤波器参数的位数，并且仅对切片中的第二语法元素进行编码 当存在两组去块滤波器参数时，头部。 当去块滤波器参数仅存在于图像层参数集或片头中的一个时，消除了第二语法元素的编码。 第二个语法元素指出哪一组去块滤波器参数用于定义应用于当前片的去块滤波器。

公开(公告)号：US20130188698A1

公开(公告)日：2013-07-25

申请号：US13743846

申请日：2013-01-17

Applicant: QUALCOMM Incorporated

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

IPC: H04N7/26

CPC classification number: H04N19/176 ,  H04N19/102 ,  H04N19/103 ,  H04N19/129 ,  H04N19/13 ,  H04N19/134 ,  H04N19/18 ,  H04N19/42 ,  H04N19/61 ,  H04N19/70

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20130177083A1

公开(公告)日：2013-07-11

申请号：US13733736

申请日：2013-01-03

Applicant: Qualcomm Incorporated

Inventor： Jianle Chen ,  Xianglin Wang ,  Vadim Seregin ,  Marta Karczewicz

IPC: H04N7/26

CPC classification number: H04N19/70 ,  H04N19/52

Abstract: A video encoder generates a first and a second candidate list. The first candidate list includes a plurality of motion vector (MV) candidates. The video encoder selects, from the first candidate list, a MV candidate for a first prediction unit (PU) of a coding unit (CU). The second MV candidate list includes each of the MV candidates of the first MV candidate list except the MV candidate selected for the first PU. The video encoder selects, from the second MV candidate list, a MV candidate for a second PU of the CU. A video decoder generates the first and second MV candidate lists in a similar way and generates predictive sample blocks for the first and second PUs based on motion information of the selected MV candidates.

Abstract translation: 视频编码器生成第一和第二候选列表。 第一候选列表包括多个运动矢量（MV）候选。 视频编码器从第一候选列表中选择用于编码单元（CU）的第一预测单元（PU）的MV候选。 第二MV候选列表包括除了为第一PU选择的MV候选之外的第一MV候选列表的MV候选中的每一个。 视频编码器从第二MV候选列表中选择CU的第二PU的MV​​候选。 视频解码器以类似的方式生成第一和第二MV候选列表，并且基于所选择的MV候选的运动信息生成第一和第二PU的预测采样块。

公开(公告)号：US20130170553A1

公开(公告)日：2013-07-04

申请号：US13733757

申请日：2013-01-03

Applicant: QUALCOMM Incorporated

Inventor： Jianle Chen ,  Vadim Seregin ,  Xianglin Wang ,  Marta Karczewicz

IPC: H04N7/26

CPC classification number: H04N19/52 ,  H04N19/13 ,  H04N19/50

Abstract: The techniques described in this disclosure may be generally related to identifying when motion vector difference (MVD) is skipped for one or both reference picture lists. The techniques may further relate to contexts for signaling MVD values. The techniques may also be related to syntax that indicates when at least one of the MVD values is zero.

Abstract translation: 本公开中描述的技术通常可以与识别何时针对一个或两个参考图片列表跳过运动矢量差异（MVD）的情况相关。 这些技术可以进一步涉及用于信令MVD值的上下文。 这些技术还可能与指示何时至少一个MVD值为零的语法有关。

公开(公告)号：US20130163664A1

公开(公告)日：2013-06-27

申请号：US13722474

申请日：2012-12-20

Applicant: QUALCOMM INCORPORATED

Inventor： Liwei Guo ,  Xianglin Wang ,  Marta Karczewicz

IPC: H04N7/26

CPC classification number: H04N19/176 ,  H04N19/11 ,  H04N19/119 ,  H04N19/147 ,  H04N19/157 ,  H04N19/593 ,  H04N19/61

Abstract: In an example, aspects of this disclosure relate to a method for coding video data that includes predicting a first non-square partition of a current block of video data using a first intra-prediction mode, where the first non-square partition has a first size. The method also includes predicting a second non-square partition of the current block of video data using a second intra-prediction mode, where the second non-square partition has a second size different than the first size. The method also includes coding the current block based on the predicted first and second non-square partitions.

Abstract translation: 在一个示例中，本公开的方面涉及用于对视频数据进行编码的方法，其包括使用第一帧内预测模式来预测当前视频数据块的第一非正方形分区，其中第一非正方形分区具有第一 尺寸。 该方法还包括使用第二帧内预测模式预测当前视频数据块的第二非正方形分区，其中第二非正方形分区具有与第一大小不同的第二大小。 该方法还包括基于预测的第一和第二非正方形分区对当前块进行编码。

公开(公告)号：US20130148718A1

公开(公告)日：2013-06-13

申请号：US13765040

申请日：2013-02-12

Applicant: Qualcomm Incorporated

Inventor： Yuriy Reznik ,  Rajan Laxman Joshi ,  Marta Karczewicz

IPC: H04N7/26

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（mu）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（eta）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。

公开(公告)号：US20130107970A1

公开(公告)日：2013-05-02

申请号：US13665559

申请日：2012-10-31

Applicant: Qualcomm Incorporated

Inventor： Xianglin Wang ,  Liwei Guo ,  Yunfei Zheng ,  Marta Karczewicz

IPC: H04N7/12

CPC classification number: H04N19/186 ,  H04N19/122 ,  H04N19/176 ,  H04N19/61 ,  H04N19/96

Abstract: A video encoding device is configured to obtain an N by N array of residual values for a luma component and a corresponding N/2 by N array of residual values for a chroma component. The video encoding device may partition the N/2 by N array of residual values for the chroma component into two N/2 by N/2 sub-arrays of chroma residual values. The video encoding device may further partition the sub-arrays of chroma residual values based on the partitioning of the array of residual values for the luma component. Video encoding device may perform a transform on each of the sub-arrays of chroma residual values to generate transform coefficients. A video decoding device may use data defining sub-arrays of transform coefficients to perform a reciprocal process to generate residual values.

Abstract translation: 视频编码装置被配置为获得亮度分量的残留值的N×N阵列和色度分量的残差值的对应N / 2乘以N阵列。 视频编码装置可以将色度分量的N / 2乘以N个残差值的阵列划分为N / 2个N / 2个色度残差子阵列。 视频编码设备还可以基于亮度分量的残差阵列的划分来进一步对色度残差的子阵列进行分区。 视频编码装置可以对色度残差值的每个子阵列执行变换，以产生变换系数。 视频解码装置可以使用定义变换系数的子阵列的数据来执行相互过程以产生残差值。