公开(公告)号：US20130107950A1

公开(公告)日：2013-05-02

申请号：US13659546

申请日：2012-10-24

Applicant: Qualcomm Incorporated

Inventor： Liwei Guo ,  Xianglin Wang ,  Marta Karczewicz

IPC: H04N7/32

CPC classification number: H04N19/11 ,  H04N19/122 ,  H04N19/46 ,  H04N19/70

Abstract: This disclosure describes techniques for determining transform partitions in video encoding processes that allow for non-square transform partitions in intra-coded blocks. According to one example of the disclosure, a video coding method comprise partitioning a coding unit into multiple prediction units, and determining a transform partition for each of the prediction units, wherein at least one transform partition is a non-square partition.

Abstract translation: 本公开描述了用于确定允许帧内编码块中的非平方变换分区的视频编码处理中的变换分区的技术。 根据本公开的一个示例，视频编码方法包括将编码单元划分为多个预测单元，以及为每个预测单元确定变换分区，其中至少一个变换分区是非方形分区。

公开(公告)号：US10547836B2

公开(公告)日：2020-01-28

申请号：US15622878

申请日：2017-06-14

Applicant: QUALCOMM Incorporated

Inventor： Liwei Guo ,  Marta Karczewicz ,  Xianglin Wang

IPC: H04N19/11 ,  H04N19/122 ,  H04N19/147 ,  H04N19/176 ,  H04N19/46 ,  H04N19/61

Abstract: A video coder can be configured to determine an intra-prediction mode for a block of video data, identify a most probable transform based on the intra-prediction mode determined for the block of video data, and code an indication of whether the most probable transform is a transform used to encode the block of video data. The most probable transform can be a non-square transform.

公开(公告)号：US10397607B2

公开(公告)日：2019-08-27

申请号：US14528794

申请日：2014-10-30

Applicant: QUALCOMM Incorporated

Inventor： Woo-Shik Kim ,  Wei Pu ,  Jianle Chen ,  Joel Sole Rojals ,  Liwei Guo ,  Marta Karczewicz

IPC: H04N19/59 ,  H04N19/176 ,  H04N19/103 ,  H04N19/136 ,  H04N19/105 ,  H04N19/50 ,  H04N19/186 ,  H04N19/61

Abstract: A method of decoding video data includes decoding a first block of video data to produce a block of reconstructed luma residual values and a block of predicted chroma residual values, wherein the block of video data has one of a 4:2:0 or a 4:2:2 chroma sub-sampling format. The method further includes performing a color residual prediction process to reconstruct a block of chroma residual values for the first block of video data using a subset of the reconstructed luma residual values as luma predictors for the block of predicted chroma residual values.

公开(公告)号：US09961351B2

公开(公告)日：2018-05-01

申请号：US14952438

申请日：2015-11-25

Applicant: QUALCOMM Incorporated

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

IPC: H04N7/12 ,  H04N19/176 ,  H04N19/13 ,  H04N19/593 ,  H04N19/157

CPC classification number: H04N19/176 ,  H04N19/13 ,  H04N19/157 ,  H04N19/593

Abstract: A device for decoding video data may be configured to determine a block of the video data is coded using a palette-based coding mode; determine a sample of the block of video data is coded using a copy from top mode or an index mode; and decode a greater than zero flag to indicate whether a run value is greater than zero, wherein the run value specifies a number of samples subsequent to the sample that have a same mode as the sample.

公开(公告)号：US09800884B2

公开(公告)日：2017-10-24

申请号：US14205006

申请日：2014-03-11

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/597 ,  H04N19/117 ,  H04N19/136 ,  H04N19/187 ,  H04N19/42 ,  H04N19/46 ,  H04N19/132 ,  H04N19/33 ,  H04N19/59 ,  H04N19/34

CPC classification number: H04N19/439 ,  H04N19/117 ,  H04N19/132 ,  H04N19/187 ,  H04N19/33 ,  H04N19/34 ,  H04N19/46 ,  H04N19/59

Abstract: An apparatus configured to code video information comprises a memory unit and a processor in communication with the memory unit. The memory unit is configured to store video information associated with a reference layer (RL) and an enhancement layer (EL). The EL comprises an EL video unit and the RL comprises an RL video unit corresponding to the EL video unit. The processor is configured to perform upsampling and bit-depth conversion on pixel information of the RL video unit in a single combined process to determine predicted pixel information of the EL video unit, and determine the EL video unit using the predicted pixel information.

公开(公告)号：US20170289543A1

公开(公告)日：2017-10-05

申请号：US15622878

申请日：2017-06-14

Applicant: QUALCOMM Incorporated

Inventor： Liwei Guo ,  Marta Karczewicz ,  Xianglin Wang

IPC: H04N19/11 ,  H04N19/122 ,  H04N19/147 ,  H04N19/46 ,  H04N19/61 ,  H04N19/176

CPC classification number: H04N19/11 ,  H04N19/122 ,  H04N19/147 ,  H04N19/176 ,  H04N19/46 ,  H04N19/61

Abstract: A video coder can be configured to determine an intra-prediction mode for a block of video data, identify a most probable transform based on the intra-prediction mode determined for the block of video data, and code an indication of whether the most probable transform is a transform used to encode the block of video data. The most probable transform can be a non-square transform.

公开(公告)号：US09693060B2

公开(公告)日：2017-06-27

申请号：US14078242

申请日：2013-11-12

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/30 ,  H04N19/109 ,  H04N19/176 ,  H04N19/51 ,  H04N19/20 ,  H04N19/577

CPC classification number: H04N19/109 ,  H04N19/176 ,  H04N19/20 ,  H04N19/30 ,  H04N19/51 ,  H04N19/577

Abstract: An apparatus configured to code video information includes a memory unit and a processor in communication with the memory unit. The memory unit is configured to store video information associated with a base layer and an enhancement layer. The video information comprises at least one enhancement layer (EL) block and at least one co-located base layer (BL) block. The co-located BL block has motion information associated therewith. The processor is configured to, in response to determining that the size of the EL block is smaller than a threshold size, either (1) use less than all of the motion information associated with the co-located BL block to code the EL block, or (2) refrain from using any motion information associated with the co-located BL block to code the EL block. The processor may encode or decode the video information.

公开(公告)号：US09654772B2

公开(公告)日：2017-05-16

申请号：US13744087

申请日：2013-01-17

Applicant: Qualcomm Incorporated

Inventor： Liwei Guo ,  Muhammed Zeyd Coban ,  Xianglin Wang ,  Marta Karczewicz

IPC: H04N7/12 ,  H04N19/50 ,  H03M7/40 ,  H04N19/13 ,  H04N19/60 ,  H04N19/91 ,  H04N19/21

CPC classification number: H04N19/50 ,  H03M7/4018 ,  H04N19/13 ,  H04N19/21 ,  H04N19/60 ,  H04N19/91

Abstract: Techniques for coding data, such as, e.g., video data, include coding a first syntax element, conforming to a particular type of syntax element, of a first slice of video data, conforming to a first slice type, using an initialization value set. The techniques further include coding a second syntax element, conforming to the same type of syntax element, of a second slice of video data, conforming to a second slice type, using the same initialization value set. In this example, the first slice type may be different from the second slice type. Also in this example, at least one of the first slice type and the second slice type may be a temporally predicted slice type. For example, the at least one of the first and second slice types may be a unidirectional inter-prediction (P) slice type, or a bi-directional inter-prediction (B) slice type.

公开(公告)号：US09538175B2

公开(公告)日：2017-01-03

申请号：US14037159

申请日：2013-09-25

Applicant: QUALCOMM Incorporated

Inventor： Marta Karczewicz ,  Joel Sole Rojals ,  Liwei Guo

IPC: H04N19/463 ,  H04N19/18 ,  H04N19/70 ,  H04N19/91 ,  H04N19/64 ,  H04N19/61 ,  H04N19/96

CPC classification number: H04N19/18 ,  H04N19/463 ,  H04N19/61 ,  H04N19/647 ,  H04N19/70 ,  H04N19/91 ,  H04N19/96

Abstract: A device for coding video data includes a video coder configured to code first significance information for transform coefficients associated with residual data, wherein the first significance information indicates if a first sub-block comprises at least one non-zero coefficient, wherein the first sub-block is a sub-block of an entire transform block; and, code second significance information, wherein the second significance information indicates if a second sub-block comprises at least one non-zero coefficient, wherein the second sub-block is a sub-block of the first sub-block, wherein coding the second significance information comprises performing an arithmetic coding operation on the second significance information, wherein a context for the arithmetic coding operation is determined based on one or more neighboring sub-blocks of a same size as the first sub-block.

Abstract translation: 一种用于编码视频数据的设备包括：视频编码器，被配置为对与残差数据相关联的变换系数编码第一有效信息，其中第一有效信息指示第一子块是否包括至少一个非零系数，其中， 块是整个变换块的子块; 以及代码第二有效信息，其中第二有效信息指示第二子块是否包括至少一个非零系数，其中第二子块是第一子块的子块，其中编码第二子块 重要信息包括对第二有效信息执行算术编码操作，其中基于与第一子块相同大小的一个或多个相邻子块来确定用于算术编码操作的上下文。

公开(公告)号：US09445132B2

公开(公告)日：2016-09-13

申请号：US14021589

申请日：2013-09-09

Applicant: QUALCOMM Incorporated

Inventor： Liwei Guo ,  Marta Karczewicz ,  Joel Sole Rojals ,  Wei-Jung Chien ,  Rajan Laxman Joshi

IPC: G06K9/72 ,  H04N19/91 ,  H04N19/60 ,  H04N19/13 ,  H04N19/129 ,  H04N19/18

CPC classification number: H04N19/91 ,  H04N19/129 ,  H04N19/13 ,  H04N19/18 ,  H04N19/60

Abstract: In some examples, a video coder employs a two-level technique to code information that identifies a position within the block of transform coefficients of one of the coefficients that is a last significant coefficient (LSC) for the block according to a scanning order associated with the block of transform coefficients. For example, a video coder may code a sub-block position that identifies a position of one of the sub-blocks that includes the LSC within the block, and code a coefficient position that identifies a position of the LSC within the sub-block that includes the LSC.

Abstract translation: 在一些示例中，视频编码器采用两级技术来编码信息，该信息根据与该数据块相关联的扫描顺序来识别作为该块的最后有效系数（LSC）的一个系数的变换系数块内的位置 变换系数块。 例如，视频编码器可以对在块内标识包括LSC的子块之一的位置的子块位置进行编码，并对识别子块内的LSC的位置的系数位置进行编码， 包括LSC。