公开(公告)号：WO2016200968A9

公开(公告)日：2017-01-26

申请号：PCT/US2016036479

申请日：2016-06-08

Applicant: QUALCOMM INC

Inventor： SOLE ROJALS JOEL ,  LEE SUNGWON ,  RUSANOVSKYY DMYTRO ,  RAMASUBRAMONIAN ADARSH KRISHNAN ,  BUGDAYCI SANSLI DONE ,  KARCZEWICZ MARTA

IPC: H04N19/46 ,  H04N1/64 ,  H04N9/68 ,  H04N19/12 ,  H04N19/186

CPC classification number: H04N19/187 ,  H04N1/64 ,  H04N5/20 ,  H04N9/68 ,  H04N19/12 ,  H04N19/132 ,  H04N19/136 ,  H04N19/176 ,  H04N19/182 ,  H04N19/186 ,  H04N19/46

Abstract: A device may determine, based on data in a bitstream, a luma sample (Y) of a pixel, a Cb sample of the pixel, and the Cr sample of the pixel. Furthermore, the device may obtain, from the bitstream, a first scaling factor and a second scaling factor. Additionally, the device may determine, based on the first scaling factor, the Cb sample for the pixel, and Y, a converted B sample (B) for the pixel. The device may determine, based on the second scaling factor, the Cr sample for the pixel, and Y, a converted R sample (R) for the pixel. The device may apply an electro-optical transfer function (EOTF) to convert Y, R, and B to a luminance sample for the pixel, a R sample for the pixel, and a B sample for the pixel, respectively.

Abstract translation: 设备可以基于比特流中的数据来确定像素的亮度样本（Y），像素的Cb样本和像素的Cr样本。 此外，设备可以从比特流获得第一缩放因子和第二缩放因子。 另外，设备可以基于第一缩放因子确定像素的Cb样本，以及Y，用于像素的转换的B样本（B）。 该装置可以基于第二比例因子确定像素的Cr样本，以及Y，用于像素的转换的R样本（R）。 该装置可以应用电光传递函数（EOTF）来将Y，R和B转换为像素的亮度样本，像素的R样本和像素的B样本。

公开(公告)号：WO2016130622A3

公开(公告)日：2016-10-27

申请号：PCT/US2016017258

申请日：2016-02-10

Applicant: QUALCOMM INC

Inventor： SEREGIN VADIM ,  JOSHI RAJAN LAXMAN ,  PU WEI ,  KARCZEWICZ MARTA

IPC: H04N19/176 ,  H04N19/11 ,  H04N19/119 ,  H04N19/436 ,  H04N19/93

CPC classification number: H04N19/119 ,  H04N19/107 ,  H04N19/11 ,  H04N19/124 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/18 ,  H04N19/186 ,  H04N19/436 ,  H04N19/593 ,  H04N19/70 ,  H04N19/91 ,  H04N19/93

Abstract: In an example, method of encoding video data may include receiving a block of video data having a size. The method may include determining the size of the block of video data. The method may include disabling palette mode encoding for the block of video data based on the determined size of the block of video data.

Abstract translation: 在一个示例中，编码视频数据的方法可以包括接收具有大小的视频数据块。 该方法可以包括确定视频数据块的大小。 该方法可以包括基于确定的视频数据块的大小来禁用视频数据块的调色板模式编码。

公开(公告)号：WO2015196104A8

公开(公告)日：2016-09-29

申请号：PCT/US2015036742

申请日：2015-06-19

Applicant: QUALCOMM INC

Inventor： KARCZEWICZ MARTA ,  PU WEI ,  SEREGIN VADIM ,  ZHANG LI ,  SOLE ROJALS JOEL ,  ZOU FENG ,  JOSHI RAJAN LAXMAN

IPC: H04N19/503 ,  H04N19/593

CPC classification number: H04N19/593 ,  H04N19/503

Abstract: Techniques are described for palette-based video coding. In palette-based coding, a video coder may form a "palette" as a table of colors for representing video data of a particular area. Rather than coding actual pixel values (or their residuals), the video coder may code palette index values for one or more of the pixels that correspond to entries in the palette representing the colors of the pixels. A palette may be explicitly encoded, predicted from previous palette entries, or a combination thereof. In this disclosure, techniques are described for coding a block of video data that has a single color value using a single color mode as a sub-mode of a palette coding mode. The disclosed techniques enable a block having a single color value to be coded with a reduced number of bits compared to a normal mode of the palette coding mode.

Abstract translation: 描述了基于调色板的视频编码技术。 在基于调色板的编码中，视频编码器可以形成“调色板”作为用于表示特定区域的视频数据的颜色表。 视频编码器不必对实际像素值（或其残差）进行编码，而是可以对与表示像素的颜色的调色板中的条目相对应的一个或多个像素编码调色板索引值。 调色板可以被显式编码，从先前调色板条目预测或其组合。 在本公开中，描述了用于使用单色模式将具有单一颜色值的​​视频数据块编码为调色板编码模式的子模式的技术。 与调色板编码模式的正常模式相比，所公开的技术使具有单个颜色值的块以减少的位数被编码。

公开(公告)号：WO2015196104A9

公开(公告)日：2016-08-25

申请号：PCT/US2015036742

申请日：2015-06-19

Applicant: QUALCOMM INC

Inventor： KARCZEWICZ MARTA ,  PU WEI ,  SEREGIN VADIM ,  ZHANG LI ,  SOLE ROJALS JOEL ,  ZOU FENG ,  JOSHI RAJAN LAXMAN

IPC: H04N19/503 ,  H04N19/593

CPC classification number: H04N19/593 ,  H04N19/503

Abstract: Techniques are described for palette-based video coding. In palette-based coding, a video coder may form a "palette" as a table of colors for representing video data of a particular area. Rather than coding actual pixel values (or their residuals), the video coder may code palette index values for one or more of the pixels that correspond to entries in the palette representing the colors of the pixels. A palette may be explicitly encoded, predicted from previous palette entries, or a combination thereof. In this disclosure, techniques are described for coding a block of video data that has a single color value using a single color mode as a sub-mode of a palette coding mode. The disclosed techniques enable a block having a single color value to be coded with a reduced number of bits compared to a normal mode of the palette coding mode.

Abstract translation: 描述了基于调色板的视频编码技术。 在基于调色板的编码中，视频编码器可以形成“调色板”作为用于表示特定区域的视频数据的颜色表。 视频编码器不必对实际像素值（或其残差）进行编码，而是可以对与表示像素的颜色的调色板中的条目相对应的一个或多个像素编码调色板索引值。 调色板可以被显式编码，从先前调色板条目预测或其组合。 在本公开中，描述了用于使用单色模式将具有单一颜色值的​​视频数据块编码为调色板编码模式的子模式的技术。 与调色板编码模式的正常模式相比，所公开的技术使具有单个颜色值的块以减少的位数被编码。

公开(公告)号：WO2015179010A3

公开(公告)日：2016-02-04

申请号：PCT/US2015020237

申请日：2015-03-12

Applicant: QUALCOMM INC

Inventor： CHONG IN SUK ,  YU YANG ,  WANG XIANGLIN ,  KARCZEWICZ MARTA

IPC: H04N19/42 ,  H04N19/60

CPC classification number: H04N19/60 ,  H04N19/42

Abstract: Systems and methods for low complexity forward transforms using mesh-based calculations are described herein. One aspect of the subject matter described in the disclosure provides a video encoder comprising a memory configured to store video information. The video encoder further comprises a processor in communication with the memory. The processor is configured to decompose a transform into multiple transform stages. The processor is further configured to transform the video information using the multiple stages to determine a transform stage output at each transform stage. The processor is further configured to constrain the transform stage output at each transform stage to a predetermined bit depth. The processor is further configured to perform operations on the constrained transform output of a last stage of the multiple stages, wherein the operations are only available for use with data having the predetermined bit depth.

Abstract translation: 本文描述了使用基于网格的计算的低复杂度正向变换的系统和方法。 在本公开中描述的主题的一个方面提供了一种视频编码器，其包括被配置为存储视频信息的存储器。 视频编码器还包括与存储器通信的处理器。 处理器被配置为将变换分解成多个变换阶段。 处理器还被配置为使用多级转换视频信息，以确定在每个变换阶段的变换级输出。 处理器还被配置为将每个变换级的变换级输出约束到预定位深度。 处理器还被配置为对多级的最后级的约束变换输出执行操作，其中操作仅可用于具有预定位深度的数据。

公开(公告)号：WO2015183375A3

公开(公告)日：2016-01-21

申请号：PCT/US2015020177

申请日：2015-03-12

Applicant: QUALCOMM INC

Inventor： CHONG IN SUK ,  YU YANG ,  WANG XIANGLIN ,  KARCZEWICZ MARTA

IPC: H04N19/18 ,  H04N19/122 ,  H04N19/132 ,  H04N19/176 ,  H04N19/61

CPC classification number: H04N19/61 ,  H04N19/122 ,  H04N19/132 ,  H04N19/14 ,  H04N19/176 ,  H04N19/18

Abstract: Systems and methods for low complexity forward transforms using zeroed-out coefficients are described herein. One aspect of the subject matter described in the disclosure provides a video encoder comprising a memory configured to store a video block. The video encoder further comprises a processor in communication with the memory. The processor is configured to determine a full power value of the video block. The processor is further configured to determine a reduced transform coefficient matrix, wherein the reduced transform coefficient matrix comprises an inner region of zero or non-zero values of the same inner region of a full transform coefficient matrix and an outer region of zero values, wherein the reduced transform coefficient matrix and the full transform coefficient matrix have the same size. The processor is further configured to determine a partial power value of the video block using the reduced transform coefficient matrix. The processor is further configured to transform the video block from a pixel domain to a coefficient domain using the reduced transform coefficient matrix based on the full power value and partial power value. The processor is further configured to encode the transformed video block.

Abstract translation: 本文描述了使用零缺失系数的低复杂度正向变换的系统和方法。 在本公开中描述的主题的一个方面提供了一种视频编码器，其包括被配置为存储视频块的存储器。 视频编码器还包括与存储器通信的处理器。 处理器被配置为确定视频块的全功率值。 处理器还被配置为确定缩小的变换系数矩阵，其中所述经简化的变换系数矩阵包括全变换系数矩阵和零值的外部区域的相同内部区域的零或非零值的内部区域，其中 减小的变换系数矩阵和全变换系数矩阵具有相同的大小。 处理器还被配置为使用缩减的变换系数矩阵来确定视频块的部分功率值。 处理器还被配置为使用基于全功率值和部分功率值的减小的变换系数矩阵将视频块从像素域变换到系数域。 处理器还被配置为对经变换的视频块进行编码。

公开(公告)号：WO2013126706A3

公开(公告)日：2014-04-10

申请号：PCT/US2013027327

申请日：2013-02-22

Applicant: QUALCOMM INC

Inventor： CHONG IN SUK ,  WANG XIANGLIN ,  KARCZEWICZ MARTA

IPC: H04N19/00

CPC classification number: H04N19/40 ,  H04N19/463 ,  H04N19/82 ,  H04N19/91

Abstract: Techniques for coding video data include coding sample adaptive offset (SAO) offset values as part of performing a video coding process. In particular, the techniques include determining the SAO offset values according to a SAO process. The techniques further include storing a codebook defining a plurality of codes for coding different variations of SAO offset values. The techniques also include coding the SAO offset values in accordance with the codebook so as to specify the SAO offset values as one of the plurality of codes defined by the codebook.

Abstract translation: 用于编码视频数据的技术包括编码样本自适应偏移（SAO）偏移值作为执行视频编码处理的一部分。 特别地，这些技术包括根据SAO过程确定SAO偏移值。 所述技术还包括存储定义用于编码SAO偏移值的不同变化的多个代码的码本。 这些技术还包括根据码本编码SAO偏移值，以便将SAO偏移值指定为由码本定义的多个代码之一。

公开(公告)号：WO2014036174A2

公开(公告)日：2014-03-06

申请号：PCT/US2013057139

申请日：2013-08-28

Applicant: QUALCOMM INC

Inventor： RAPAKA KRISHNAKANTH ,  CHEN JIANLE ,  KARCZEWICZ MARTA ,  SEREGIN VADIM

CPC classification number: H04N19/30 ,  H04N19/103 ,  H04N19/105 ,  H04N19/11 ,  H04N19/117 ,  H04N19/129 ,  H04N19/136 ,  H04N19/176 ,  H04N19/18 ,  H04N19/187 ,  H04N19/33 ,  H04N19/46 ,  H04N19/59 ,  H04N19/593

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 determines a value of a video unit positioned at a position within the enhancement layer based at least in part on an intra prediction value weighted by a first weighting factor, wherein the intra prediction value is determined based on at least one additional video unit in the enhancement layer, and a value of a co-located video unit in the reference layer weighted by a second weighting factor, wherein the co-located video unit is located at a position in the reference layer corresponding to the position of the video unit in the enhancement layer. In some embodiments, the at least one of the first and second weighting factors is between 0 and 1.

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。 存储器单元存储与参考层和对应的增强层相关联的视频信息。 处理器至少部分基于由第一加权因子加权的帧内预测值来确定位于增强层内的位置处的视频单元的值，其中帧内预测值是基于至少一个附加视频单元确定的 所述增强层以及所述参考层中的共址视频单元的值通过第二加权因子进行加权，其中所述共址视频单元位于所述参考层中与所述视频单元的位置相对应的位置处 增强层。 在一些实施例中，第一和第二加权因子中的至少一个在0和1之间。

公开(公告)号：WO2013155299A3

公开(公告)日：2013-12-27

申请号：PCT/US2013036165

申请日：2013-04-11

Applicant: QUALCOMM INC

Inventor： TU CHENGJIE ,  WANG XIANGLIN ,  KARCZEWICZ MARTA

IPC: H04N7/26 ,  H04N7/36

CPC classification number: H04N19/51 ,  H04N19/105 ,  H04N19/11 ,  H04N19/13 ,  H04N19/147 ,  H04N19/176 ,  H04N19/187 ,  H04N19/30 ,  H04N19/33 ,  H04N19/52 ,  H04N19/91

Abstract: This disclosure pertains to video coding. Prediction information for a current block in an enhancement layer may be determined based at least in part on base layer information obtained by coding a base block in a base layer beneath the enhancement layer. This base block may occur in a position in the base layer such that it is co-located with a non-causal block in the enhancement layer (e.g., a block that occurs after the current block in the coding order of the enhancement layer). The prediction information determined for the current block may be used to code the current block (e.g., encoding or decoding the current block).

Abstract translation: 本公开涉及视频编码。 用于增强层中的当前块的预测信息可以至少部分地基于通过对增强层下面的基础层中的基础块进行编码而获得的基础层信息来确定。 该基本块可以发生在基本层中的位置，使得其与增强层中的非因果块（例如，在增强层的编码顺序中的当前块之后发生的块）共处一处。 为当前块确定的预测信息可以用于编码当前块（例如，编码或解码当前块）。

公开(公告)号：WO2013142784A3

公开(公告)日：2013-11-14

申请号：PCT/US2013033487

申请日：2013-03-22

Applicant: QUALCOMM INC

Inventor： GUO LIWEI ,  KARCZEWICZ MARTA

IPC: H04N7/26

CPC classification number: H04N19/136 ,  H04N19/196 ,  H04N19/463 ,  H04N19/70 ,  H04N19/90 ,  H04N19/96

Abstract: A video decoder determines whether a first condition is satisfied. The first condition is satisfied when any sibling residual quad tree (RQT) node of a current RQT node is associated with a significant luma coefficient block. In addition, the video decoder determines whether a second condition is satisfied. The second condition is satisfied when a chroma transform block of a parent RQT node of the current RQT node is significant and is split along with a luma transform block of the parent RQT node. In response to determining that neither the first nor the second condition is satisfied, the video decoder determines that a luma coded block flag (CBF) for the current RQT node is omitted from the bitstream.

Abstract translation: 视频解码器确定是否满足第一条件。 当当前RQT节点的任何兄弟残差四叉树（RQT）节点与有效亮度系数块相关联时，满足第一条件。 另外，视频解码器确定是否满足第二条件。 当当前RQT节点的父RQT节点的色度变换块有意义并且与父RQT节点的亮度变换块一起被分割时，满足第二条件。 响应于确定第一条件和第二条件都不满足，视频解码器确定用于当前RQT节点的亮度编码块标志（CBF）从比特流中省略。