公开(公告)号：US20130294524A1

公开(公告)日：2013-11-07

申请号：US13886210

申请日：2013-05-02

Applicant: QUALCOMM INCORPORATED

Inventor： Geert VAN DER AUWERA ,  Marta KARCZEWICZ ,  Rajan Laxman JOSHI ,  Vadim SEREGIN

IPC: H04N7/30

CPC classification number: H04N19/176 ,  H04N19/60 ,  H04N19/70

Abstract: An example method includes determining whether an encoded block of residual video data was encoded losslessly in accordance with a lossless coding mode, based on whether transform operations were skipped during encoding of the block of residual video data, and if the block of residual video data was encoded losslessly, then decoding the encoded block of residual video data according to the lossless coding mode to form a reconstructed block of residual video data, where decoding the encoded block of residual data comprises bypassing quantization and sign hiding while decoding the encoded block of residual video data, and bypassing all loop filters with respect to the reconstructed block of residual video data.

Abstract translation: 一种示例性方法包括：基于在编码残差视频数据块期间是否跳过了变换操作，确定剩余视频数据的编码块是否根据无损编码模式无损编码，并且如果剩余视频数据块是 无损地编码，然后根据无损编码模式解码残余视频数据的编码块，以形成残余视频数据的重建块，其中对编码的残留数据块进行解码包括绕过量化和符号隐藏，同时对编码的残留视频块进行解码 数据和绕过所有环路滤波器相对于重构的残留视频数据块。

公开(公告)号：US20130272425A1

公开(公告)日：2013-10-17

申请号：US13830720

申请日：2013-03-14

Applicant: QUALCOMM INCORPORATED

Inventor： Geert VAN DER AUWERA ,  Xianglin WANG ,  Marta KARCZEWICZ

IPC: H04N7/26

CPC classification number: H04N19/80 ,  H04N19/117 ,  H04N19/134 ,  H04N19/172 ,  H04N19/82 ,  H04N19/86

Abstract: Techniques are described for providing continuous control of a deblocking filter for a video block using a beta offset parameter. Deblocking filters are defined based on one or more deblocking decisions. Conventionally, a quantization parameter and a beta offset parameter are used to identify a beta parameter (“β”) value that determines threshold values of the deblocking decisions. The value of the beta offset parameter results in a change or increment of the β value. For small increments of the β value, rounding of the threshold values may result in no change and discontinuous control of the deblocking decisions. The techniques include calculating at least one deblocking decision for the deblocking filter according to a threshold value that has been modified based on a multiplier value of the beta offset parameter. The multiplier value applied to the beta offset parameter causes an integer change in the modified threshold value.

Abstract translation: 描述了使用β偏移参数来提供用于视频块的去块滤波器的连续控制的技术。 去块滤波器基于一个或多个去块决定来定义。 常规地，使用量化参数和β偏移参数来识别确定去块决定的阈值的β参数（“β”）值。 β偏移参数的值导致β值的变化或增量。 对于β值的小增量，阈值的舍入可能导致解调决定没有变化和不连续的控制。 这些技术包括根据已经基于β偏移参数的乘数值修改的阈值来计算去块滤波器的至少一个去块决定。 应用于β偏移参数的乘数值会导致修改后的阈值中的整数更改。

公开(公告)号：US20130272423A1

公开(公告)日：2013-10-17

申请号：US13862818

申请日：2013-04-15

Applicant: QUALCOMM INCORPORATED

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

IPC: H04N7/30

CPC classification number: H04N19/60 ,  H03M7/40 ,  H03M7/4018 ,  H04N19/102 ,  H04N19/129 ,  H04N19/13 ,  H04N19/167 ,  H04N19/176 ,  H04N19/18

Abstract: Techniques are described for determining a scan order for transform coefficients of a block. The techniques may determine context for encoding or decoding significance syntax elements for the transform coefficients based on the determined scan order. A video encoder may encode the significance syntax elements and a video decoder may decode the significance syntax elements based on the determined contexts.

Abstract translation: 描述了用于确定块的变换系数的扫描顺序的技术。 这些技术可以基于所确定的扫描顺序来确定用于对变换系数的重要性语法元素进行编码或解码的上下文。 视频编码器可以对重要性语法元素进行编码，并且视频解码器可以基于所确定的上下文来解码重要语法元素。

公开(公告)号：US20130272402A1

公开(公告)日：2013-10-17

申请号：US13860442

申请日：2013-04-10

Applicant: QUALCOMM INCORPORATED

Inventor： Chengjie TU ,  Xianglin WANG ,  Marta KARCZEWICZ

IPC: H04N11/04

CPC classification number: H04N19/50 ,  H04N19/103 ,  H04N19/159 ,  H04N19/176 ,  H04N19/187 ,  H04N19/196 ,  H04N19/30 ,  H04N19/52

Abstract: In some embodiments of a video coder, if some prediction information is not available for a first block in a current layer, the video coder uses corresponding information (e.g., intra prediction direction and motion information), if available, from the first block's co-located second block in the base layer as if it were the prediction information for the first block. The corresponding information can then be used in the current layer to determine the prediction information of succeeding blocks in the current layer.

Abstract translation: 在视频编码器的一些实施例中，如果某些预测信息对于当前层中的第一块不可用，则视频编码器使用相应的信息（例如，帧内预测方向和运动信息）（如果可用） 位于基本层中的第二块，就像它是第一块的预测信息一样。 然后可以在当前层中使用相应的信息来确定当前层中的后续块的预测信息。

公开(公告)号：US20130272378A1

公开(公告)日：2013-10-17

申请号：US13832909

申请日：2013-03-15

Applicant: QUALCOMM INCORPORATED

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

IPC: H04N7/12

CPC classification number: H04N19/60 ,  H03M7/40 ,  H03M7/4018 ,  H04N19/102 ,  H04N19/129 ,  H04N19/13 ,  H04N19/167 ,  H04N19/176 ,  H04N19/18

Abstract: Techniques are described for a video coder (e.g., video encoder or video decoder) that is configured to select a context pattern from a plurality of context patterns that are the same for a plurality of scan types. Techniques are also described for a video coder that is configured to select a context pattern that is stored as a one-dimensional context pattern and identifies contexts for two or more scan types.

Abstract translation: 描述了用于视频编码器（例如，视频编码器或视频解码器）的技术，其被配置为从多个扫描类型相同的多个上下文模式中选择上下文模式。 还描述了用于视频编码器的技术，其被配置为选择作为一维上下文模式存储的上下文模式并且识别两种或更多种扫描类型的上下文。

公开(公告)号：US20130271566A1

公开(公告)日：2013-10-17

申请号：US13839447

申请日：2013-03-15

Applicant: QUALCOMM INCORPORATED

Inventor： Ying CHEN ,  Li ZHANG ,  Yang YU ,  Geert VAN DER AUWERA ,  Xiang LI ,  Marta KARCZEWICZ

IPC: H04N13/00

CPC classification number: H04N13/161 ,  H04N19/109 ,  H04N19/176 ,  H04N19/597 ,  H04N19/70

Abstract: A video encoder signals, in a bitstream, a syntax element that indicates whether a current video unit is predicted from a VSP picture. The current video unit is a macroblock or a macroblock partition. The video encoder determines, based at least in part on whether the current video unit is predicted from the VSP picture, whether to signal, in the bitstream, motion information for the current video unit. A video decoder decodes the syntax element from the bitstream and determines, based at least in part on the syntax element, whether the bitstream includes the motion information.

Abstract translation: 视频编码器在比特流中发信号，指示是否从VSP图像预测当前视频单元。 当前视频单元是宏块或宏块分区。 视频编码器至少部分地基于从VSP图像预测当前视频单元，确定在比特流中是否向当前视频单元发送运动信息。 视频解码器从比特流解码语法元素，并且至少部分地基于语法元素确定比特流是否包括运动信息。

公开(公告)号：US20130251041A1

公开(公告)日：2013-09-26

申请号：US13796572

申请日：2013-03-12

Applicant: QUALCOMM INCORPORATED

Inventor： Liwei GUO ,  Marta KARCZEWICZ ,  Wei-Jung CHIEN

IPC: H04N7/26

CPC classification number: H04N19/122 ,  H04N19/13 ,  H04N19/18 ,  H04N19/186 ,  H04N19/513 ,  H04N19/91

Abstract: In one example, a device includes a video coder configured to determine a context for entropy coding a bin of a value indicative of a last significant coefficient of a block of video data using a function of an index of the bin, and code the bin using the determined context. The video coder may encode or decode the bin using context-adaptive binary arithmetic coding (CABAC). The function may also depend on a size of the block. In this manner, a table indicating context indexes for the contexts need not be stored by the device.

Abstract translation: 在一个示例中，设备包括视频编码器，该视频编码器被配置为使用该bin的索引的函数来确定用于熵编码指示视频数据块的最后有效系数的值的一个上下文的上下文，并且使用 确定的上下文。 视频编码器可以使用上下文自适应二进制算术编码（CABAC）来编码或解码该仓。 该功能还可以取决于块的大小。 以这种方式，指示上下文的上下文索引的表不需要被设备存储。

公开(公告)号：US20130242046A1

公开(公告)日：2013-09-19

申请号：US13798997

申请日：2013-03-13

Applicant: QUALCOMM INCORPORATED

Inventor： Li ZHANG ,  Ying CHEN ,  Marta KARCZEWICZ

IPC: H04N13/00

CPC classification number: H04N13/161 ,  H04N19/139 ,  H04N19/513 ,  H04N19/52 ,  H04N19/597

Abstract: Techniques are described for determining a disparity vector for a current block based on disparity motion vectors of one or more spatially and temporally neighboring regions to a current block to be predicted. The spatially and temporally neighboring regions include one or a plurality of blocks, and the disparity motion vector represents a single vector in one reference picture list for the plurality of blocks within the spatially or temporally neighboring region. The determined disparity vector could be used to coding tools which utilize the information between different views such as merge mode, advanced motion vector prediction (AMVP) mode, inter-view motion prediction, and inter-view residual prediction.

Abstract translation: 描述了基于一个或多个空间和时间上相邻区域与要预测的当前块的视差运动矢量来确定当前块的视差矢量的技术。 空间和时间上相邻的区域包括一个或多个块，并且视差运动矢量表示在空间或时间上相邻区域内的多个块的一个参考图像列表中的单个向量。 确定的视差向量可以用于利用诸如合并模式，高级运动矢量预测（AMVP）模式，视角间运动预测和视角间残差预测的不同视图之间的信息的编码工具。