公开(公告)号：US20150341635A1

公开(公告)日：2015-11-26

申请号：US14719263

申请日：2015-05-21

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/103 ,  H04N19/51 ,  H04N19/176

CPC classification number: H04N19/103 ,  H04N19/176 ,  H04N19/51 ,  H04N19/70 ,  H04N19/91 ,  H04N19/93

Abstract: In an example a method of processing video data includes determining a run value that indicates a run-length of a run of a palette index of a block of video data, wherein the palette index is associated with a color value in a palette of color values for coding the block of video data, the method also includes determining a context for context adaptive coding of data that represents the run value based on the palette index, and coding the data that represents run value from a bitstream using the determined context.

Abstract translation: 在示例中，处理视频数据的方法包括确定指示视频数据块的调色板索引的游程的游程长度的运行值，其中调色板索引与颜色值调色板中的颜色值相关联 为了对视频数据块进行编码，该方法还包括基于调色板索引确定表示运行值的数据的上下文自适应编码的上下文，以及使用所确定的上下文从比特流对表示运行值的数据进行编码。

公开(公告)号：US09143802B2

公开(公告)日：2015-09-22

申请号：US13664057

申请日：2012-10-30

Applicant: Qualcomm Incorporated

Inventor： Ying Chen ,  Ye-Kui Wang ,  Rajan Laxman Joshi ,  Marta Karczewicz

IPC: H04N7/26 ,  H04N19/66 ,  H04N19/70 ,  H04N19/463 ,  H04N5/91

CPC classification number: H04N19/66 ,  H04N19/463 ,  H04N19/70

Abstract: A video encoder generates a first network abstraction layer (NAL) unit. The first NAL unit contains a first fragment of a parameter set associated with video data. The video encoder also generates a second NAL unit. The second NAL unit contains a second fragment of the parameter set. A video decoder may receive a bitstream that includes the first and second NAL units. The video decoder decodes, based at least in part on the parameter set, one or more coded pictures of the video data.

Abstract translation: 视频编码器生成第一网络抽象层（NAL）单元。 第一个NAL单元包含与视频数据相关联的参数集的第一个片段。 视频编码器还产生第二NAL单元。 第二个NAL单元包含参数集的第二个片段。 视频解码器可以接收包括第一和第二NAL单元的比特流。 视频解码器至少部分地基于参数集来解码视频数据的一个或多个编码图像。

公开(公告)号：US20150264363A1

公开(公告)日：2015-09-17

申请号：US14656087

申请日：2015-03-12

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/186 ,  H04N19/70

CPC classification number: H04N19/186 ,  H04N19/176 ,  H04N19/70 ,  H04N19/90 ,  H04N19/93

Abstract: In an example, a method of coding video data includes determining, by a video coder and for a block of video data, a palette having a plurality of entries indicating a plurality of respective color values, wherein a first line of the block of video data includes a pixel located adjacent to an edge of the block of video data, and wherein a second line of the block of video data includes a pixel located adjacent to the edge of the block and adjacent to the pixel of the first line. In this example, the method also includes coding, in a scan order, index values that map pixels of the block to entries in the palette, wherein the pixel of the second line immediately follows the pixel of the first line in the scan order.

Abstract translation: 在一个示例中，视频数据的编码方法包括：通过视频编码器和视频数据块确定具有指示多个相应颜色值的多个条目的调色板，其中视频数据块的第一行 包括位于视频数据块的边缘附近的像素，并且其中视频数据块的第二行包括位于与块的边缘相邻并且与第一行的像素相邻的像素。 在该示例中，该方法还包括以扫描顺序编码将块的像素映射到调色板中的条目的索引值，其中第二行的像素紧跟着扫描顺序中的第一行的像素。

公开(公告)号：US20150264362A1

公开(公告)日：2015-09-17

申请号：US14656071

申请日：2015-03-12

Applicant: QUALCOMM Incorporated

Inventor： Rajan Laxman Joshi ,  Marta Karczewicz

IPC: H04N19/18 ,  H04N19/184 ,  H04N19/196 ,  H04N19/12

CPC classification number: H04N19/18 ,  H03M7/40 ,  H04N19/00 ,  H04N19/115 ,  H04N19/13 ,  H04N19/136 ,  H04N19/157 ,  H04N19/176 ,  H04N19/70

Abstract: A device for coding video data includes a memory configured to store video data, and at least one processor configured to: determine a maximum number of bits to be used when coding a syntax element indicating absolute values of transform coefficients of a coding unit of the video data, determine a maximum number of suffix bits to be used when coding a Golomb-Rice/Exponential-Golomb coding suffix codeword of the syntax element, determine a maximum number of prefix bits to be used when coding a unary Golomb-Rice/Exponential-Golomb coding prefix codeword of the syntax element, determine the absolute values of transform coefficients for the coding unit, code a prefix codeword for one of the absolute values, and code a suffix codeword for the one of the absolute values, and code the coding unit based on the prefix codeword and the suffix codeword.

Abstract translation: 用于编码视频数据的设备包括被配置为存储视频数据的存储器，以及至少一个处理器，被配置为：当编码表示视频的编码单元的变换系数的绝对值的语法元素时，确定要使用的最大位数 数据，确定在编码语法元素的Golomb-Rice /指数 - 哥伦布编码后缀码字时使用的后缀位的最大数量，确定当编码一元Golomb-Rice /指数 - 语法元素的Golomb编码前缀码字，确定编码单元的变换系数的绝对值，为绝对值之一编码前缀码字，并为绝对值之一编码后缀码字，并对编码单元 基于前缀码字和后缀码字。

公开(公告)号：US20140376634A1

公开(公告)日：2014-12-25

申请号：US14309730

申请日：2014-06-19

Applicant: QUALCOMM Incorporated

Inventor： Liwei Guo ,  Chao Pang ,  Woo-Shik Kim ,  Wei Pu ,  Joel Sole Rojals ,  Rajan Laxman Joshi ,  Marta Karczewicz

IPC: H04N19/583 ,  H04N19/82 ,  H04N19/51

CPC classification number: H04N19/52 ,  H04N19/105 ,  H04N19/154 ,  H04N19/176 ,  H04N19/186 ,  H04N19/513 ,  H04N19/523 ,  H04N19/55 ,  H04N19/563 ,  H04N19/593 ,  H04N19/70 ,  H04N19/82

Abstract: Techniques coding video data, including a mode for intra prediction of blocks of video data from predictive blocks of video data within the same picture, may include determining a predictive block of video data for the current block of video data, wherein the predictive block of video data is a reconstructed block of video data within the same picture as the current block of video data. A two-dimensional vector, which may be used by a video coder to identify the predictive block of video data, includes a horizontal displacement component and a vertical displacement component relative to the current block of video data. The mode for intra prediction of blocks of video data from predictive blocks of video data within the same picture may be referred to as Intra Block Copy or Intra Motion Compensation.

Abstract translation: 编码视频数据的技术，包括用于从同一图像内的视频数据的预测块对视频数据块进行帧内预测的模式，可以包括确定用于当前视频数据块的视频数据的预测块，其中视频预测块 数据是与当前视频数据块相同的图像内的视频数据的重建块。 可以由视频编码器使用以识别视频数据的预测块的二维向量包括相对于当前视频数据块的水平位移分量和垂直位移分量。 用于对来自同一图像内的视频数据的预测块的视频数据块进行帧内预测的模式可以被称为帧内复制或帧内补偿。

公开(公告)号：US20140307800A1

公开(公告)日：2014-10-16

申请号：US14250282

申请日：2014-04-10

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/44 ,  H04N19/60

CPC classification number: H04N19/13 ,  H04N19/156 ,  H04N19/176 ,  H04N19/44 ,  H04N19/60 ,  H04N19/91

Abstract: Techniques are described for updating a value of a Rice parameter used to define Golomb codes for coefficient level coding. The Golomb codes defined by the Rice parameter may be used to code a remaining absolute value of a coefficient level for at least one coefficient in a coefficient group (CG). According to the techniques, the value of the Rice parameter is updated based on a selection of a minimum of either a maximum value of the Rice parameter or a variable increment of the value of the Rice parameter. The variable increment is determined based on the value of the Rice parameter and an absolute value of the coefficient level for the current coefficient being coded. Techniques are also described for adjusting the value of the Rice parameter used to define Golomb codes for coefficient level coding based on whether a transform is applied to a transform block.

Abstract translation: 描述了用于更新用于定义用于系数级编码的戈洛姆码的Rice参数的值的技术。 由Rice参数定义的Golomb码可用于对系数组（CG）中的至少一个系数的系数级别的剩余绝对值进行编码。 根据该技术，基于Rice参数的最大值或Rice参数的值的可变增量的最小值的选择来更新Rice参数的值。 根据Rice参数的值和正在编码的当前系数的系数级别的绝对值来确定可变增量。 还描述了用于基于是否将变换应用于变换块来调整用于定义用于系数级编码的Golomb码的Rice参数的值的技术。

公开(公告)号：US20140301475A1

公开(公告)日：2014-10-09

申请号：US14244711

申请日：2014-04-03

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/46

CPC classification number: H04N19/119 ,  H04N19/46 ,  H04N19/50 ,  H04N19/90 ,  H04N19/93

Abstract: In an example, a method of coding video data includes determining a first index value associated with a first pixel in a block of video data, wherein the first index value relates a position of the first pixel to an entry of a palette of pixel values, determining, based on the first index value, one or more second index values associated with one or more second pixels in the block of video data, wherein the second index values relate the positions of the one or more second pixels to one or more entries of the palette of pixel values, and coding the first pixel and the one or more second pixels of the block of video data.

Abstract translation: 在一个示例中，视频数据的编码方法包括确定与视频数据块中的第一像素相关联的第一索引值，其中第一索引值将第一像素的位置与像素值调色板的条目相关联， 基于第一索引值确定与视频数据块中的一个或多个第二像素相关联的一个或多个第二索引值，其中第二索引值将一个或多个第二像素的位置与一个或多个第二像素的位置相关联， 像素值的调色板，并且对视频数据块的第一像素和一个或多个第二像素进行编码。

公开(公告)号：US20140301474A1

公开(公告)日：2014-10-09

申请号：US14244688

申请日：2014-04-03

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/119 ,  H04N19/50

CPC classification number: H04N19/119 ,  H04N19/46 ,  H04N19/50 ,  H04N19/90 ,  H04N19/93

Abstract: In an example, a method of coding video data includes determining a first palette having first entries indicating first pixel values, determining, based on the first entries of the first palette, one or more second entries indicating second pixel values of a second palette, and coding pixels of a block of video data using the second palette.

Abstract translation: 在一个示例中，一种编码视频数据的方法包括确定具有指示第一像素值的第一条目的第一调色板，基于第一调色板的第一条目确定指示第二调色板的第二像素值的一个或多个第二条目，以及 使用第二调色板编码视频数据块的像素。

公开(公告)号：US20140301438A1

公开(公告)日：2014-10-09

申请号：US14243707

申请日：2014-04-02

Applicant: QUALCOMM Incorporated

Inventor： Woo-Shik Kim ,  Joel Sole Rojals ,  Rajan Laxman Joshi ,  Marta Karczewicz

IPC: H04N19/117

CPC classification number: H04N19/176 ,  H04N19/117 ,  H04N19/136 ,  H04N19/186 ,  H04N19/70 ,  H04N19/82

Abstract: This disclosure provides systems, methods and apparatus for sample adaptive offset (SAO) scaling. For example, the apparatus may include a processor configured to determine an offset value for an SAO filter applied to video data to improve reconstruction of signal amplitudes in the video data. The processor may be further configured to determine a first value indicative of a bit depth and a second value indicative of a scale factor for the video data, to provide a scaled offset value based on applying the scale factor to the offset value, and to scale at least one color component of the video data according to the scaled offset value. The processor may also be configured to identify an edge offset category for a scaled group of neighboring pixel values, and to adjust the SAO filter based on the identified edge offset category.

Abstract translation: 本公开提供了用于样本自适应偏移（SAO）缩放的系统，方法和装置。 例如，该装置可以包括被配置为确定应用于视频数据的SAO滤波器的偏移值以改善视频数据中的信号幅度的重构的处理器。 处理器还可以被配置为确定指示比特深度的第一值和指示视频数据的缩放因子的第二值，以便基于将比例因子应用于偏移值来提供缩放的偏移值，并且缩放 根据缩放的偏移值，视频数据的至少一个颜色分量。 处理器还可以被配置为识别经缩放的相邻像素值组的边缘偏移类别，并且基于所识别的边缘偏移类别来调整SAO滤波器。

公开(公告)号：US20140226721A1

公开(公告)日：2014-08-14

申请号：US14259046

申请日：2014-04-22

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/50 ,  H04N19/44 ,  H04N19/593

CPC classification number: H04N19/159 ,  H04N19/129 ,  H04N19/14 ,  H04N19/176 ,  H04N19/46 ,  H04N19/593 ,  H04N19/88

Abstract: Techniques are described for coding residual data of a prediction residual block in either a lossy or lossless coding mode, in which a transform is skipped or bypassed. The techniques of this disclosure include determining whether to reposition, e.g., rotate or flip, residual data of a residual block prior to coding the residual data of the residual block. For both the lossy and lossless coding modes, a video coding device determines whether to reposition residual data of a residual block based on a prediction mode of the residual block and a size of the residual block. In some examples, the techniques disable repositioning for all residual blocks in the inter-prediction mode and the intra block copying prediction mode, and determine to reposition residual blocks in the intra-prediction mode when the residual blocks have block sizes that are less than or equal to a threshold size.

Abstract translation: 描述了用于在有损或无损编码模式中编码预测残差块的残差数据的技术，其中跳变或旁路转换。 本公开的技术包括在对残余块的残差数据进行编码之前确定是否重新定位（例如）旋转或翻转残余块的残差数据。 对于有损和无损编码模式，视频编码装置基于残差块的预测模式和残余块的大小来确定是否重新定位残余块的残差数据。 在一些示例中，这些技术禁止在帧间预测模式和帧内块复制预测模式中的所有残余块的重新定位，并且当剩余块具有小于或等于块的块大小时，确定以帧内预测模式重新定位残余块 等于阈值大小。