公开(公告)号：US20140369404A1

公开(公告)日：2014-12-18

申请号：US14473897

申请日：2014-08-29

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/117 ,  H04N19/174 ,  H04N19/86 ,  H04N19/70

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：US20140341297A1

公开(公告)日：2014-11-20

申请号：US14448874

申请日：2014-07-31

Applicant: QUALCOMM Incorporated

Inventor： Wei-Jung Chien ,  Peisong Chen ,  Marta Karczewicz

IPC: H04N19/51 ,  H04N19/13 ,  H04N19/91

CPC classification number: H04N19/13 ,  H04N19/513 ,  H04N19/517 ,  H04N19/52 ,  H04N19/523 ,  H04N19/61 ,  H04N19/70 ,  H04N19/91

Abstract: In one example, a device for coding video data includes a video coder configured to configured to code information representative of whether an absolute value of an x-component of a motion vector difference value for a current block of video data is greater than zero, code information representative of whether an absolute value of a y-component of the motion vector difference value is greater than zero, when the absolute value of the x-component is greater than zero, code information representative of the absolute value of the x-component, when the absolute value of the y-component is greater than zero, code information representative of the absolute value of the y-component, when the absolute value of the x-component is greater than zero, code a sign of the x-component, and when the absolute value of the y-component is greater than zero, code a sign of the y-component.

Abstract translation: 在一个示例中，用于编码视频数据的设备包括：视频编码器，被配置为对表示当前视频数据块的运动矢量差值的x分量的绝对值是否大于零的代码进行编码;代码 表示运动矢量差值的y分量的绝对值是否大于零的信息，当x分量的绝对值大于零时，表示x分量的绝对值的代码信息， 当y分量的绝对值大于零时，表示y分量的绝对值的代码信息，当x分量的绝对值大于零时，编码x分量的符号， 并且当y分量的绝对值大于零时，编码y分量的符号。

公开(公告)号：US20140341275A1

公开(公告)日：2014-11-20

申请号：US14449034

申请日：2014-07-31

Applicant: QUALCOMM Incorporated

Inventor： Ying Chen ,  Marta Karczewicz ,  Ye-Kui Wang

IPC: H04N19/105 ,  H04N19/139 ,  H04N19/61 ,  H04N19/46 ,  H04N19/583 ,  H04N19/109 ,  H04N19/172

Abstract: A video encoder is configured to determine a picture size for one or more pictures included in a video sequence. The picture size associated with the video sequence may be a multiple of an aligned coding unit size for the video sequence. In one example, the aligned coding unit size for the video sequence may comprise a minimum coding unit size where the minimum coding unit size is selected from a plurality of smallest coding unit sizes corresponding to different pictures in the video sequence. A video decoder is configured to obtain syntax elements to determine the picture size and the aligned coding unit size for the video sequence. The video decoder decodes the pictures included in the video sequence with the picture size, and stores the decoded pictures in a decoded picture buffer.

Abstract translation: 视频编码器被配置为确定视频序列中包括的一个或多个图像的图像尺寸。 与视频序列相关联的图像大小可以是视频序列的对齐编码单元大小的倍数。 在一个示例中，用于视频序列的对齐编码单元大小可以包括最小编码单元大小，其中从与视频序列中的不同图片对应的多个最小编码单元尺寸中选择最小编码单元大小。 视频解码器被配置为获得用于确定视频序列的图像大小和对齐的编码单元大小的语法元素。 视频解码器以图像大小对包括在视频序列中的图像进行解码，并将解码的图像存储在解码图像缓冲器中。

公开(公告)号：US20140267605A1

公开(公告)日：2014-09-18

申请号：US14216232

申请日：2014-03-17

Applicant: QUALCOMM Incorporated

Inventor： Vijayaraghavan Thirumalai ,  Li Zhang ,  Ying Chen ,  Marta Karczewicz

IPC: H04N13/00

CPC classification number: H04N13/161 ,  H04N19/597

Abstract: A device for coding three-dimensional video data includes a video coder configured to determine a first block of a first texture view is to be coded using a block-based view synthesis mode; locate, in a depth view, a first depth block that corresponds to the first block of the first texture view; determine depth values of two or more corner positions of the first depth block; based on the depth values, derive a disparity vector for the first block; using the disparity vector, locate a first block of a second texture view; and, inter-predict the first block of the first texture view using the first block of the second texture view.

Abstract translation: 一种用于对三维视频数据进行编码的设备包括：视频编码器，被配置为使用基于块的视图合成模式来确定要编码的第一纹理图像的第一块; 在深度视图中定位与第一纹理视图的第一块对应的第一深度块; 确定第一深度块的两个或多个角位置的深度值; 基于深度值，导出第一块的视差向量; 使用视差向量，定位第二纹理视图的第一块; 并且使用第二纹理视图的第一块来相互预测第一纹理视图的第一块。

公开(公告)号：US20140146875A1

公开(公告)日：2014-05-29

申请号：US14089339

申请日：2013-11-25

Applicant: QUALCOMM Incorporated

Inventor： In Suk Chong ,  Vadim Seregin ,  Marta Karczewicz

IPC: H04N7/26

CPC classification number: H04N19/117 ,  H04N19/157 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/182 ,  H04N19/196 ,  H04N19/30 ,  H04N19/82

Abstract: This disclosure describes techniques for coding video data. In particular, this disclosure describes techniques for loop filtering for video coding. The techniques of this disclosure may apply to loop filtering and/or partial loop filtering across block boundaries in scalable video coding processes. Loop filtering may include, for example, one or more of adaptive loop filtering (ALF), sample adaptive offset (SAO) filtering, and deblocking filtering.

Abstract translation: 本公开描述了用于编码视频数据的技术。 特别地，本公开描述了用于视频编码的环路滤波的技术。 本公开的技术可以应用于可扩展视频编码过程中跨块边界的环路滤波和/或部分环路滤波。 环路滤波可以包括例如自适应环路滤波（ALF），采样自适应偏移（SAO）滤波和去块滤波中的一个或多个。

公开(公告)号：US08718144B2

公开(公告)日：2014-05-06

申请号：US13736270

申请日：2013-01-08

Applicant: Qualcomm Incorporated

Inventor： Yuriy Reznik ,  Rajan Laxman Joshi ,  Marta Karczewicz

IPC: H04N7/12

CPC classification number: H04N19/00812 ,  G06F17/147 ,  H04N19/42 ,  H04N19/45 ,  H04N19/61 ,  H04N19/625

Abstract: In general, techniques are described for implementing an 8-point discrete cosine transform (DCT). An apparatus comprising an 8-point discrete cosine transform (DCT) hardware unit may implement these techniques to transform media data from a spatial domain to a frequency domain. The 8-point DCT 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 DCT 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 internal factor and a fourth internal factor, as well as, the fifth internal factor and a sixth internal factor.

Abstract translation: 通常，描述了用于实现8点离散余弦变换（DCT）的技术。 包括8点离散余弦变换（DCT）硬件单元的装置可以实施这些技术以将媒体数据从空间域转换到频域。 8点DCT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DCT硬件单元还包括与根据第二关系的第二缩放因子（＆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缩放因子与第三个内在因素和第四个内在因素以及第五个内在因素和第六个内在因素联系起来。

公开(公告)号：US20140112387A1

公开(公告)日：2014-04-24

申请号：US14142510

申请日：2013-12-27

Applicant: QUALCOMM Incorporated

Inventor： Yan Ye ,  Marta Karczewicz

IPC: H04N19/61 ,  H04N19/625 ,  H04N19/103

CPC classification number: H04N19/625 ,  H04N19/103 ,  H04N19/11 ,  H04N19/12 ,  H04N19/122 ,  H04N19/129 ,  H04N19/13 ,  H04N19/147 ,  H04N19/157 ,  H04N19/176 ,  H04N19/18 ,  H04N19/19 ,  H04N19/196 ,  H04N19/197 ,  H04N19/42 ,  H04N19/46 ,  H04N19/463 ,  H04N19/48 ,  H04N19/593 ,  H04N19/61 ,  H04N19/70

Abstract: This disclosure describes techniques for transforming residual blocks of video data. In particular, a plurality of different transforms selectively applied to the residual blocks based on the prediction mode of the video blocks. At least a portion of the plurality of transforms are separable directional transform specifically trained for a corresponding prediction mode to provide better energy compaction for the residual blocks of the given prediction mode. Using separable directional transforms offers the benefits of lower computation complexity and storage requirement than use of non-separable directional transforms. Additionally, a scan order used to scan the coefficients of the residual block may be adjusted when applying separable directional transforms. In particular, the scan order may be adjusted based on statistics associated with one or more previously coded blocks to better ensure that non-zero coefficients are grouped near the front of the one-dimensional coefficient vector to improve the effectiveness of entropy coding.

Abstract translation: 本公开描述了用于转换视频数据的残余块的技术。 具体地，基于视频块的预测模式，选择性地将多个不同的变换应用于残差块。 多个变换的至少一部分是针对相应的预测模式进行专门训练的可分离方向变换，以为给定预测模式的残余块提供更好的能量压缩。 使用可分离的方向变换提供了比使用不可分离的方向变换更低的计算复杂度和存储要求的好处。 此外，当应用可分离的方向变换时，可以调整用于扫描残差块的系数的扫描顺序。 特别地，可以基于与一个或多个先前编码的块相关联的统计来调整扫描顺序，以更好地确保非零系数被分组在一维系数向量的前面附近，以提高熵编码的有效性。

公开(公告)号：US20140086307A1

公开(公告)日：2014-03-27

申请号：US14037159

申请日：2013-09-25

Applicant: QUALCOMM Incorporated

Inventor： Marta Karczewicz ,  Joel Sole Rojals ,  Liwei Guo

IPC: H04N7/26

CPC classification number: H04N19/18 ,  H04N19/463 ,  H04N19/61 ,  H04N19/647 ,  H04N19/70 ,  H04N19/91 ,  H04N19/96

Abstract: A device for coding video data includes a video coder configured to code first significance information for transform coefficients associated with residual data, wherein the first significance information indicates if a first sub-block comprises at least one non-zero coefficient, wherein the first sub-block is a sub-block of an entire transform block; and, code second significance information, wherein the second significance information indicates if a second sub-block comprises at least one non-zero coefficient, wherein the second sub-block is a sub-block of the first sub-block, wherein coding the second significance information comprises performing an arithmetic coding operation on the second significance information, wherein a context for the arithmetic coding operation is determined based on one or more neighboring sub-blocks of a same size as the first sub-block.

Abstract translation: 一种用于编码视频数据的设备包括：视频编码器，被配置为对与残差数据相关联的变换系数编码第一有效信息，其中第一有效信息指示第一子块是否包括至少一个非零系数，其中， 块是整个变换块的子块; 以及代码第二有效信息，其中第二有效信息指示第二子块是否包括至少一个非零系数，其中第二子块是第一子块的子块，其中编码第二子块 重要信息包括对第二有效信息执行算术编码操作，其中基于与第一子块相同大小的一个或多个相邻子块来确定用于算术编码操作的上下文。

公开(公告)号：US20140071235A1

公开(公告)日：2014-03-13

申请号：US14024058

申请日：2013-09-11

Applicant: QUALCOMM Incorporated

Inventor： Li Zhang ,  Ying Chen ,  Marta Karczewicz

IPC: H04N7/32

CPC classification number: H04N19/597 ,  H04N19/52 ,  H04N19/70

Abstract: This disclosure describes techniques for improving coding efficiency of motion prediction in multiview and 3D video coding. In one example, a method of decoding video data comprises deriving one or more disparity vectors for a current block, the disparity vectors being derived from neighboring blocks relative to the current block, converting a disparity vector to one or more of inter-view predicted motion vector candidates and inter-view disparity motion vector candidates, adding the one or more inter-view predicted motion vector candidates and the one or more inter-view disparity motion vector candidates to a candidate list for a motion vector prediction mode, and decoding the current block using the candidate list.

Abstract translation: 本公开描述了用于提高多视图和3D视频编码中运动预测的编码效率的技术。 在一个示例中，解码视频数据的方法包括导出当前块的一个或多个视差矢量，相对于当前块从相邻块导出视差向量，将视差向量转换成视角间预测运动中的一个或多个 矢量候选和视角间视差运动矢量候补，将一个或多个视点间预测运动矢量候选和一个或多个视点间视差运动矢量候选添加到用于运动矢量预测模式的候选列表，并且解码当前 阻止使用候选人名单。

公开(公告)号：US20140050261A1

公开(公告)日：2014-02-20

申请号：US13964788

申请日：2013-08-12

Applicant: QUALCOMM Incorporated

Inventor： Chengjie Tu ,  Jianle Chen ,  Marta Karczewicz ,  Liwei Guo

IPC: H04N7/26

CPC classification number: H04N19/129 ,  H04N19/14 ,  H04N19/176 ,  H04N19/33 ,  H04N19/46 ,  H04N19/61

Abstract: An apparatus for coding video information includes a memory unit configured to store video information associated with a reference block; and a processor in communication with the memory unit, wherein the processor is configured to determine a value of a current video unit associated with the reference block based on, at least in part, a classification of the reference block and a scan order selected by the processor based upon the classification. The scan order indicates an order in which values within the reference block are processed to at least partially determine the value of the current video unit.

Abstract translation: 一种用于编码视频信息的装置包括：存储单元，被配置为存储与参考块相关联的视频信息; 以及与所述存储器单元通信的处理器，其中所述处理器被配置为至少部分地基于所述参考块的分类和由所述参考块选择的扫描顺序来确定与所述参考块相关联的当前视频单元的值 处理器基于分类。 扫描顺序指示参考块内的值被处理以至少部分地确定当前视频单元的值的顺序。