公开(公告)号：US20130251026A1

公开(公告)日：2013-09-26

申请号：US13828416

申请日：2013-03-14

Applicant: QUALCOMM INCORPORATED

Inventor： Liwei Guo ,  Marta Karczewicz

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节点的任何兄弟剩余四叉树（RQT）节点与重要亮度系数块相关联时，满足第一条件。 此外，视频解码器确定是否满足第二条件。 当当前RQT节点的父RQT节点的色度变换块是有效的并且与母RQT节点的亮度变换块一起被分割时，满足第二条件。 响应于确定不满足第一和第二条件，视频解码器确定从比特流中省略当前RQT节点的亮度编码块标志（CBF）。

公开(公告)号：US11259020B2

公开(公告)日：2022-02-22

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 ,  H04N19/90 ,  H04N19/93 ,  H04N19/50 ,  H04N19/46

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.

公开(公告)号：US10448032B2

公开(公告)日：2019-10-15

申请号：US14017169

申请日：2013-09-03

Applicant: QUALCOMM Incorporated

Inventor： Jianle Chen ,  Liwei Guo ,  Xiang Li ,  Marta Karczewicz ,  Wei Pu

IPC: H04N19/30 ,  H04N19/117 ,  H04N19/187 ,  H04N19/33

Abstract: Methods and systems for video image coding are provided. Sets of filters may be selected and applied to video information at least partially based on phase displacement information between a first and second layer of video information. For example, the phase displacement information may correspond to a difference between a position of a pixel in the first layer and a corresponding position of the pixel in the second layer. The selected filter set can be an up-sampling filter or a down-sampling filter. The phase displacement information may be encoded as a syntax element embedded in the video bit stream.

公开(公告)号：US10362333B2

公开(公告)日：2019-07-23

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 ,  H04N19/176 ,  H04N19/46 ,  H04N19/593 ,  H04N19/127 ,  H04N19/14 ,  H04N19/18 ,  H04N19/94 ,  H04N19/93

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.

公开(公告)号：US20180103273A1

公开(公告)日：2018-04-12

申请号：US15794507

申请日：2017-10-26

Applicant: QUALCOMM Incorporated

Inventor： Liwei Guo ,  Peisong Chen ,  Marta Karczewicz

IPC: H04N19/86 ,  H04N19/80 ,  H04N19/17 ,  H04N19/127 ,  H04N19/117 ,  H04N19/176 ,  H04N19/159

CPC classification number: H04N19/86 ,  H04N19/117 ,  H04N19/127 ,  H04N19/159 ,  H04N19/17 ,  H04N19/176 ,  H04N19/80

Abstract: During a video encoding or decoding process, a predicted prediction block is generated for a CU. The CU may have two or more prediction units (PUs). A computing device selects a neighbor region size. After the computing device selects the neighbor region size, samples in a transition zone of the prediction block are identified. Samples associated with a first PU are in the transition zone if neighbor regions that contain the samples also contain samples associated with a second PU. Samples associated with the second PU may be in the transition zone if neighbor regions that contain the samples also contain samples associated with the first PU. The neighbor regions have the selected neighbor region size. A smoothing operation is then performed on the samples in the transition zone.

公开(公告)号：US09912944B2

公开(公告)日：2018-03-06

申请号：US13863266

申请日：2013-04-15

Applicant: QUALCOMM Incorporated

Inventor： Liwei Guo ,  Xianglin Wang ,  Marta Karczewicz

IPC: H04N7/50 ,  H04N19/61 ,  H04N19/159 ,  H04N19/119 ,  H04N19/122 ,  H04N19/96

CPC classification number: H04N19/96 ,  H04N19/119 ,  H04N19/122 ,  H04N19/159 ,  H04N19/619

Abstract: In an example, a method of decoding video data includes determining a prediction partitioning structure for predicting pixel values associated with a block of video data. The method also includes determining a transform partitioning structure for applying one or more transforms to the predicted pixel values. Determining the transform split structure includes splitting a parent transform unit, upon determining the transform partitioning structure comprises splitting the parent transform unit into one or more square transforms, determining one or more square transforms such that each of the one or more square transforms correspond to exactly one prediction partition, and upon determining the transform partitioning structure comprises splitting the parent transform unit into one or more non-square transforms, determining whether to split the one or more non-square transforms based at least in part on the one or more non-square transforms being non-square.

公开(公告)号：US09654777B2

公开(公告)日：2017-05-16

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: H04N7/12 ,  H04N19/119 ,  H04N19/50 ,  H04N19/46 ,  H04N19/90 ,  H04N19/93

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.

公开(公告)号：US09558567B2

公开(公告)日：2017-01-31

申请号：US14328502

申请日：2014-07-10

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/50 ,  G06T9/00 ,  H04N1/64 ,  H04N19/176 ,  H04N19/70 ,  H04N19/196 ,  H04N19/593 ,  H04N19/186 ,  H04N19/93 ,  H04N19/94 ,  H04N19/105

CPC classification number: G06T9/00 ,  H04N1/644 ,  H04N19/105 ,  H04N19/176 ,  H04N19/186 ,  H04N19/196 ,  H04N19/593 ,  H04N19/70 ,  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. According to the techniques, a video coder determines one or more palette entries in a predictive palette that are copied to the current palette, and a number of new palette entries not in the predictive palette that are included in the current palette. The video coder calculates a size of the current palette equal to the sum of the number of the copied palette entries and the number of the new palette entries, and generates the current palette including the copied palette entries and the new 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。 根据这些技术，视频编码器确定预测调色板中复制到当前调色板中的一个或多个调色板条目，以及不在预览调色板中的当前调色板中的多个新调色板条目。 视频编码器计算当前调色板的大小等于复制的调色板条目的数量和新调色板条目的数量的总和，并且生成包括复制的调色板条目和新调色板条目的当前调色板。

公开(公告)号：US09386306B2

公开(公告)日：2016-07-05

申请号：US13964788

申请日：2013-08-12

Applicant: QUALCOMM Incorporated

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

IPC: H04B1/66 ,  H04N11/02 ,  H04N11/04 ,  H04N7/12 ,  H04N19/129 ,  H04N19/176 ,  H04N19/61 ,  H04N19/14 ,  H04N19/33 ,  H04N19/46

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。

公开(公告)号：US20150016501A1

公开(公告)日：2015-01-15

申请号：US14328502

申请日：2014-07-10

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/186 ,  H04N19/50

CPC classification number: G06T9/00 ,  H04N1/644 ,  H04N19/105 ,  H04N19/176 ,  H04N19/186 ,  H04N19/196 ,  H04N19/593 ,  H04N19/70 ,  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. According to the techniques, a video coder determines one or more palette entries in a predictive palette that are copied to the current palette, and a number of new palette entries not in the predictive palette that are included in the current palette. The video coder calculates a size of the current palette equal to the sum of the number of the copied palette entries and the number of the new palette entries, and generates the current palette including the copied palette entries and the new 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。 根据这些技术，视频编码器确定预测调色板中复制到当前调色板中的一个或多个调色板条目，以及不在预览调色板中的当前调色板中的多个新调色板条目。 视频编码器计算当前调色板的大小等于复制的调色板条目的数量和新调色板条目的数量的总和，并且生成包括复制的调色板条目和新调色板条目的当前调色板。