公开(公告)号：US10194158B2

公开(公告)日：2019-01-29

申请号：US14014016

申请日：2013-08-29

Applicant: QUALCOMM Incorporated

Inventor： Marta Karczewicz ,  Liwei Guo ,  Joel Sole Rojals

IPC: H04N19/30 ,  H04N19/176 ,  H04N19/12 ,  H04N19/157 ,  H04N19/46

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 obtains residue block information based at least in part on video information associated with the reference layer and the enhancement layer. The processor determines an adjustment transform function based on a transform function associated with the video information. The processor determines a transform block based on the adjusted transform function and the residue block information.

公开(公告)号：US09872040B2

公开(公告)日：2018-01-16

申请号：US14586805

申请日：2014-12-30

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/583 ,  H04N19/124 ,  H04N19/14 ,  H04N19/46 ,  H04N19/593 ,  H04N19/176 ,  H04N19/127 ,  H04N19/18 ,  H04N19/94 ,  H04N19/93

CPC classification number: H04N19/583 ,  H04N19/124 ,  H04N19/127 ,  H04N19/14 ,  H04N19/176 ,  H04N19/18 ,  H04N19/46 ,  H04N19/593 ,  H04N19/93 ,  H04N19/94

Abstract: In palette-based coding, a video coder may form a so-called “palette” as a table of colors representing the video data of a given block. The video coder may code index values for one or more pixels values of a current block of video data, where the index values indicate entries in the palette that represent the pixel values of the current block. A method includes determining a number of entries in a palette, and determining whether a block of video data includes any escape pixels not associated with any entry in the palette. The method includes responsive to determining that the number of entries is one, and that the block does not include any escape pixels, bypassing decoding index values for the pixel values of the block, and determining the pixel values of the block to be equal to the one entry in the palette.

公开(公告)号：US09503715B2

公开(公告)日：2016-11-22

申请号：US14472134

申请日：2014-08-28

Applicant: QUALCOMM Incorporated

Inventor： Chao Pang ,  Jianle Chen ,  Joel Sole Rojals ,  Rajan Laxman Joshi ,  Liwei Guo ,  Marta Karczewicz

IPC: H04N19/00 ,  H04N19/174 ,  H04N19/159 ,  H04N19/176 ,  H04N19/593 ,  H04N19/105 ,  H04N19/61

CPC classification number: H04N19/105 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/593 ,  H04N19/61

Abstract: A method of encoding video data includes determining that a current block of video data is to be encoded using an intra block copy (BC) mode and constrained intra prediction, determining one or more reference blocks that may be used for encoding the current block using the intra BC mode, wherein each of the one or more reference blocks is encoded with an intra prediction mode, and encoding the current block of video data using the intra BC mode and at least one of the determined one or more reference blocks.

Abstract translation: 一种编码视频数据的方法包括：使用块内复制（BC）模式和约束的帧内预测来确定视频数据的当前块要被编码，确定一个或多个参考块，其可以用于使用 在BC内模式中，其中一个或多个参考块中的每一个被以帧内预测模式编码，并且使用帧内BC模式和所确定的一个或多个参考块中的至少一个对当前视频数据块进行编码。

公开(公告)号：US09484952B2

公开(公告)日：2016-11-01

申请号：US13665467

申请日：2012-10-31

Applicant: Qualcomm Incorporated

Inventor： Liwei Guo ,  Xianglin Wang ,  Marta Karczewicz ,  Joel Sole Rojals

IPC: H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H03M7/40 ,  H04N19/13

CPC classification number: H03M7/4018 ,  H04N19/13

Abstract: In one example, an apparatus for context adaptive entropy coding may include a coder configured to determine one or more initialization parameters for a context adaptive entropy coding process based on one or more initialization parameter index values. The coder may be further configured to determine one or more initial context states for initializing one or more contexts of the context adaptive entropy coding process based on the initialization parameters. The coder may be still further configured to initialize the contexts based on the initial context states. In some examples, the initialization parameters may be included in one or more tables, wherein, to determine the initialization parameters, the coder may be configured to map the initialization parameter index values to the initialization parameters in the tables. Alternatively, the coder may be configured to calculate the initialization parameters using the initialization parameter index values and one or more formulas.

Abstract translation: 在一个示例中，用于上下文自适应熵编码的装置可以包括编码器，其被配置为基于一个或多个初始化参数索引值来确定用于上下文自适应熵编码处理的一个或多个初始化参数。 编码器还可以被配置为基于初始化参数确定用于初始化上下文自适应熵编码处理的一个或多个上下文的一个或多个初始上下文状态。 编码器还可以进一步配置为基于初始上下文状态来初始化上下文。 在一些示例中，初始化参数可以被包括在一个或多个表中，其中为了确定初始化参数，编码器可以被配置为将初始化参数索引值映射到表中的初始化参数。 或者，编码器可以被配置为使用初始化参数索引值和一个或多个公式来计算初始化参数。

公开(公告)号：US09467701B2

公开(公告)日：2016-10-11

申请号：US13739598

申请日：2013-01-11

Applicant: Qualcomm Incorporated

Inventor： Liwei Guo ,  Xianglin Wang ,  Marta Karczewicz

IPC: H04N7/50 ,  H04N19/96 ,  H04N19/46 ,  H04N19/186 ,  H04N19/176 ,  H04N19/70

CPC classification number: H04N19/96 ,  H04N19/13 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46 ,  H04N19/70

Abstract: A video encoder generates a bitstream that includes a residual quad tree (RQT) for a coding unit (CU). The CU is larger than a maximum-allowable transform unit (TU) size and the RQT includes a hierarchy of nodes. A root node of the RQT corresponds to the CU as a whole and leaf nodes of the RQT correspond to TUs of the CU. The root node is associated with a coded block flag (CBF) for a chroma component. The CBF for the chroma component indicates whether any of the TUs of the CU are associated with a significant coefficient block that is based on samples of the particular chroma component. A video decoder receives the bitstream and determines, based on the CBF, whether coefficient blocks associated with TUs that correspond to the leaf nodes include non-zero coefficients.

Abstract translation: 视频编码器生成包括用于编码单元（CU）的残余四叉树（RQT）的比特流。 CU大于最大允许变换单位（TU）大小，并且RQT包括节点层级。 RQT的根节点对应于CU，并且RQT的叶节点对应于CU的TU。 根节点与色度分量的编码块标志（CBF）相关联。 用于色度分量的CBF指示CU中的任何TU是否与基​​于特定色度分量的样本的显着系数块相关联。 视频解码器接收比特流并且基于CBF确定与叶节点对应的TU相关联的系数块是否包括非零系数。

公开(公告)号：US09270991B2

公开(公告)日：2016-02-23

申请号：US14137889

申请日：2013-12-20

Applicant: QUALCOMM Incorporated

Inventor： Jianle Chen ,  Vadim Seregin ,  Liwei Guo ,  Marta Karczewicz

IPC: H04N7/12 ,  H04N19/33 ,  H04N19/105 ,  H04N19/134 ,  H04N19/174 ,  H04N19/187 ,  H04N19/59

CPC classification number: H04N19/33 ,  H04N19/105 ,  H04N19/134 ,  H04N19/174 ,  H04N19/187 ,  H04N19/59

Abstract: An apparatus for coding video information may include a memory unit configured to store video information associated with a picture and a processor in communication with the memory unit configured to resample video information of a reference picture to obtain a resampled picture having a plurality of slices and a different picture size than a picture to be encoded. Further, the processor may determine slice definitions for slices in the resampled picture. The slices of the resampled picture may correspond to slices of the reference picture. The processor may determine, based on the slice definitions, whether a slice of the resampled picture satisfies one or more slice definition rules. In response to determining that the slice of the resampled picture does not satisfy at least one slice definition rule, the processor can modify the slice definition for the slice so as to satisfy the slice definition rule.

Abstract translation: 用于对视频信息进行编码的装置可以包括：存储单元，被配置为存储与图像相关联的视频信息;处理器，与所述存储器单元进行通信，所述存储器单元被配置为对参考图像的视频信息进行重新采样，以获得具有多个切片的再采样图像， 与要编码的图片不同的图片大小。 此外，处理器可以确定重采样图像中的切片的切片定义。 重采样图像的切片可以对应于参考图片的切片。 处理器可以基于切片定义来确定重采样图像的切片是否满足一个或多个切片定义规则。 响应于确定重采样图像的切片不满足至少一个切片定义规则，处理器可以修改切片的切片定义以满足切片定义规则。

公开(公告)号：US09237344B2

公开(公告)日：2016-01-12

申请号：US13796572

申请日：2013-03-12

Applicant: QUALCOMM Incorporated

Inventor： Liwei Guo ,  Marta Karczewicz ,  Wei-Jung Chien

IPC: H04N7/26 ,  H04N19/51 ,  H04N19/513 ,  H04N19/13 ,  H04N19/122 ,  H04N19/91 ,  H04N19/186 ,  H04N19/18

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：US20150189319A1

公开(公告)日：2015-07-02

申请号：US14586820

申请日：2014-12-30

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/583 ,  H04N19/124 ,  H04N19/44 ,  H04N19/93 ,  H04N19/597

CPC classification number: H04N19/583 ,  H04N19/124 ,  H04N19/127 ,  H04N19/14 ,  H04N19/176 ,  H04N19/18 ,  H04N19/46 ,  H04N19/593 ,  H04N19/93 ,  H04N19/94

Abstract: In palette-based coding, a video coder may form a so-called “palette” as a table of colors representing the video data of a given block. The video coder may code index values for one or more pixels values of a current block of video data, where the index values indicate entries in the palette that represent the pixel values of the current block. A method includes determining a palette for a block of video data, identifying escape pixel(s) not associated with any palette entries, identifying a single quantization parameter (QP) value for all escape pixels of the block for a given color channel using a QP value for non-palette based coding of transform coefficients, dequantizing each escape pixel using the identified QP value, and determining pixel values of the block using the dequantized escape pixels and index values for any pixel(s) associated with any palette entries.

Abstract translation: 在基于调色板的编码中，视频编码器可以形成所谓的“调色板”，作为表示给定块的视频数据的颜色表。 视频编码器可以编码当前视频数据块的一个或多个像素值的索引值，其中索引值指示调色板中表示当前块的像素值的条目。 一种方法包括确定用于视频数据块的调色板，识别与任何调色板条目不相关联的转义像素，使用QP来识别给定颜色通道的块的所有转义像素的单个量化参数（QP）值 变换系数的基于非调色板的编码的值，使用所识别的QP值去量化每个逸出像素，以及使用去量化的转义像素和与任何调色板条目相关联的任何像素的索引值来确定块的像素值。

公开(公告)号：US20150063440A1

公开(公告)日：2015-03-05

申请号：US14472134

申请日：2014-08-28

Applicant: QUALCOMM Incorporated

Inventor： Chao Pang ,  Jianle Chen ,  Joel Sole Rojals ,  Rajan Laxman Joshi ,  Liwei Guo ,  Marta Karczewicz

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/174 ,  H04N19/159

CPC classification number: H04N19/105 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/593 ,  H04N19/61

Abstract: A method of encoding video data includes determining that a current block of video data is to be encoded using an intra block copy (BC) mode and constrained intra prediction, determining one or more reference blocks that may be used for encoding the current block using the intra BC mode, wherein each of the one or more reference blocks is encoded with an intra prediction mode, and encoding the current block of video data using the intra BC mode and at least one of the determined one or more reference blocks.

Abstract translation: 一种编码视频数据的方法包括：使用块内复制（BC）模式和约束的帧内预测来确定视频数据的当前块要被编码，确定一个或多个参考块，其可以用于使用 在BC内模式中，其中一个或多个参考块中的每一个被以帧内预测模式编码，并且使用帧内BC模式和所确定的一个或多个参考块中的至少一个对当前视频数据块进行编码。

公开(公告)号：US20150055703A1

公开(公告)日：2015-02-26

申请号：US14466407

申请日：2014-08-22

Applicant: QUALCOMM Incorporated

Inventor： Chao Pang ,  Liwei Guo ,  Jianle Chen ,  Rajan Laxman Joshi ,  Joel Sole Rojals ,  Marta Karczewicz

IPC: H04N19/593 ,  H04N19/82 ,  H04N19/176

CPC classification number: H04N19/176 ,  H04N19/593 ,  H04N19/70 ,  H04N19/82

Abstract: In general, techniques are described for performing an intra block copying process to code video data. A video decoding device that includes a memory and one or more processors may perform the techniques. The memory may be configured to store a current block of a picture. The processors may be configured to perform an intra block copying process to decode the current block using a prediction block that is from a same slice or a same tile as that in which the coded current block resides, the prediction block restricted to be within a search region that only includes the same slice or the same tile as that in which the coded current block resides.

Abstract translation: 通常，描述了执行块内复制处理以对视频数据进行编码的技术。 包括存储器和一个或多个处理器的视频解码装置可以执行这些技术。 存储器可以被配置为存储图片的当前块。 处理器可以被配置为执行块内复制处理，以使用来自与编码的当前块所在的相同片或相同片的预测块来解码当前块，预测块被限制在搜索范围内 区域，其仅包括与编码的当前块所在的相同的片或相同的片。