公开(公告)号：US20130272423A1

公开(公告)日：2013-10-17

申请号：US13862818

申请日：2013-04-15

Applicant: QUALCOMM INCORPORATED

Inventor： Wei-Jung CHIEN ,  Joel SOLE ROJALS ,  Jianle CHEN ,  Rajan Laxman JOSHI ,  Marta KARCZEWICZ

IPC: H04N7/30

CPC classification number: H04N19/60 ,  H03M7/40 ,  H03M7/4018 ,  H04N19/102 ,  H04N19/129 ,  H04N19/13 ,  H04N19/167 ,  H04N19/176 ,  H04N19/18

Abstract: Techniques are described for determining a scan order for transform coefficients of a block. The techniques may determine context for encoding or decoding significance syntax elements for the transform coefficients based on the determined scan order. A video encoder may encode the significance syntax elements and a video decoder may decode the significance syntax elements based on the determined contexts.

Abstract translation: 描述了用于确定块的变换系数的扫描顺序的技术。 这些技术可以基于所确定的扫描顺序来确定用于对变换系数的重要性语法元素进行编码或解码的上下文。 视频编码器可以对重要性语法元素进行编码，并且视频解码器可以基于所确定的上下文来解码重要语法元素。

公开(公告)号：US20180270500A1

公开(公告)日：2018-09-20

申请号：US15918789

申请日：2018-03-12

Applicant: QUALCOMM Incorporated

Inventor： Xiang LI ,  Yi-Wen CHEN ,  Jianle CHEN ,  Hsiao-Chiang CHUANG ,  Wei-Jung CHIEN ,  Yu-Chen SUN ,  Marta KARCZEWICZ

IPC: H04N19/52 ,  H04N19/176 ,  H04N19/44

Abstract: Techniques and systems are provided for deriving one or more sets of affine motion parameters at a decoder. For example, the decoder can obtain video data from an encoded video bitstream. The video data includes at least a current picture and a reference picture. The decoder can determine a set of affine motion parameters for a current block of the current picture. The set of affine motion parameters can be used for performing motion compensation prediction for the current block. The set of affine motion parameters can be determined using a current affine template of the current block and a reference affine template of the reference picture. In some cases, an encoder can determine a set of affine motion parameters for a current block using a current affine template of the current block and a reference affine template of the reference picture, and can generate an encoded video bitstream that includes a syntax item indicating template matching based affine motion derivation mode is to be used by a decoder for the current block. The encoded video bitstream may not include any affine motion parameters for determining the set of affine motion parameters.

公开(公告)号：US20180098066A1

公开(公告)日：2018-04-05

申请号：US15724155

申请日：2017-10-03

Applicant: QUALCOMM Incorporated

Inventor： Sungwon LEE ,  Wei-Jung CHIEN ,  Kai ZHANG ,  Jianle CHEN ,  Marta KARCZEWICZ

IPC: H04N19/117 ,  H04N19/139 ,  H04N19/82 ,  H04N19/184 ,  H04N19/159 ,  H04N19/513 ,  H04N19/59

CPC classification number: H04N19/117 ,  H04N19/136 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176 ,  H04N19/184 ,  H04N19/46 ,  H04N19/463 ,  H04N19/521 ,  H04N19/523 ,  H04N19/59 ,  H04N19/82

Abstract: Systems, methods, and apparatus are provided for adaptively switching interpolation filters during the encoding of video data or the decoding of a video bitstream. In various implementations, a set of interpolation filters can be defined and made available to coding device. The coding device can select an interpolation filter for a given coding unit. The interpolation filter can be selected based on, for example, the coding level of the coding unit, among other things. In some examples, signaling of the selected interpolation filter can be simplified by selecting a subset of the set of interpolation filters for a given coding situation. An index indicating an interpolation filter from the subset can then be signaled. Alternatively, a decoder can derive an identity of the interpolation filter from data provided by a bitstream, in which case the index need not be explicitly signaled in the bitstream.

公开(公告)号：US20140301457A1

公开(公告)日：2014-10-09

申请号：US14243310

申请日：2014-04-02

Applicant: QUALCOMM Incorporated

Inventor： Wei Pu ,  Jianle CHEN ,  Xiang LI ,  Marta KARCZEWICZ ,  Vadim SEREGIN

IPC: H04N19/503 ,  H04N19/80 ,  H04N19/31

CPC classification number: H04N19/80 ,  H04N19/30 ,  H04N19/46

Abstract: A method of coding video data can include receiving video information associated with a reference layer, an enhancement layer, or both, and generating a plurality of inter-layer reference pictures using a plurality of inter-layer filters and one or more reference layer pictures. The generated plurality of inter-layer reference pictures may be inserted into a reference picture list. A current picture in the enhancement layer may be coded using the reference picture list. The inter-layer filters may comprise default inter-layer filters or alternative inter-layer filters signaled in a sequence parameter set, video parameter set, or slice header.

Abstract translation: 编码视频数据的方法可以包括接收与参考层，增强层或两者相关联的视频信息，以及使用多个层间滤波器和一个或多个参考层图像来生成多个层间参考图像。 所生成的多个层间参考图片可以被插入到参考图片列表中。 可以使用参考图片列表对增强层中的当前图像进行编码。 层间过滤器可以包括在序列参数集，视频参数集或片头中发信号的默认层间过滤器或替代层间过滤器。

公开(公告)号：US20140301456A1

公开(公告)日：2014-10-09

申请号：US14242526

申请日：2014-04-01

Applicant: QUALCOMM Incorporated

Inventor： Ye-Kui WANG ,  Jianle CHEN ,  Krishnakanth RAPAKA ,  Ying CHEN

IPC: H04N19/503 ,  H04N19/30

CPC classification number: H04N19/30 ,  H04N19/463 ,  H04N19/573 ,  H04N19/58 ,  H04N19/70

Abstract: In one implementation, an apparatus is provided for encoding or decoding video information. The apparatus comprises a memory configured to store inter-layer reference pictures associated with a current picture that is being coded. The apparatus further comprises a processor operationally coupled to the memory. In one embodiment, the processor is configured to indicate a number of inter-layer reference pictures to use to predict the current picture using inter-layer prediction. The processor is also configured to indicate which of the inter-layer reference pictures to use to predict the current picture using inter-layer prediction. The processor is also configured to determine an inter-layer reference picture set associated with the current picture using the indication of the number of inter-layer reference pictures and the indication of which of the inter-layer reference pictures to use to predict the current picture using inter-layer prediction.

Abstract translation: 在一个实现中，提供了一种用于对视频信息进行编码或解码的装置。 该装置包括被配置为存储与正被编码的当前图片相关联的层间参考图片的存储器。 该装置还包括可操作地耦合到存储器的处理器。 在一个实施例中，处理器被配置为指示用于使用层间预测来预测当前图像的多个层间参考图片。 处理器还被配置为指示哪个层间参考图片用于使用层间预测来预测当前图像。 处理器还被配置为使用层间参考图片的数量的指示和用于预测当前图片的哪个层间参考图片的指示来确定与当前图片相关联的层间参考图片集 使用层间预测。

公开(公告)号：US20140185680A1

公开(公告)日：2014-07-03

申请号：US14137101

申请日：2013-12-20

Applicant: QUALCOMM Incorporated

Inventor： Xiang LI ,  Jianle CHEN ,  Marta KARCZEWICZ ,  Vadim SEREGIN ,  Wei PU ,  Krishnakanth RAPAKA ,  Liwei GUO

IPC: H04N19/187 ,  H04N19/597 ,  H04N19/154 ,  H04N19/593 ,  H04N19/51 ,  H04N19/59

CPC classification number: H04N19/187 ,  H04N19/154 ,  H04N19/52 ,  H04N19/59 ,  H04N19/593 ,  H04N19/597

Abstract: An apparatus configured to code (e.g., encode or decode) 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 processor is configured to up-sample a base layer reference block by using an up-sampling filter when the base and enhancement layers have different resolutions; perform motion compensation interpolation by filtering the up-sampled base layer reference block; determine base layer residual information based on the filtered up-sampled base layer reference block; determine weighted base layer residual information by applying a weighting factor to the base layer residual information; and determine an enhancement layer block based on the weighted base layer residual information. The processor may encode or decode the video information.

Abstract translation: 被配置为对视频信息进行编码（例如，编码或解码）的装置包括与存储器单元通信的存储器单元和处理器。 存储器单元被配置为存储与基本层和增强层相关联的视频信息。 处理器被配置为当基层和增强层具有不同分辨率时，通过使用上采样滤波器对基层参考块进行采样; 通过对上采样的基层参考块进行滤波来执行运动补偿内插; 基于滤波的上采样基层参考块确定基层残差信息; 通过对所述基本层残差信息应用加权因子来确定加权基本层残差信息; 并且基于加权的基本层残差信息来确定增强层块。 处理器可以对视频信息进行编码或解码。

公开(公告)号：US20140064360A1

公开(公告)日：2014-03-06

申请号：US14011441

申请日：2013-08-27

Applicant: QUALCOMM INCORPORATED

Inventor： Krishnakanth RAPAKA ,  Jianle CHEN ,  Marta KARCZEWICZ ,  Vadim SEREGIN

IPC: H04N7/26

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。 处理器至少部分地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，其中帧内预测值基于至少一个附加视频单元 所述增强层和由第二加权因子加权的参考层中的同位置视频单元的值，其中所述同位置视频单元位于与所述视频单元的位置对应的参考层中的位置 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：US20140015925A1

公开(公告)日：2014-01-16

申请号：US13933588

申请日：2013-07-02

Applicant: QUALCOMM Incorporated

Inventor： Xiang LI ,  Krishnakanth RAPAKA ,  Liwei GUO ,  Jianle CHEN ,  Marta KARCZEWICZ

IPC: H04N7/36 ,  H04N13/00

CPC classification number: H04N13/161 ,  H04N19/105 ,  H04N19/187 ,  H04N19/33 ,  H04N19/597

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 of a reference layer. The processor determines a value of a video unit based at least in part on a prediction value and an adjusted residual prediction value associated with the reference layer. The adjusted residual prediction value is equal to a residual prediction from the reference layer multiplied by a weighting factor that is different from 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。 存储单元存储参考层的视频信息。 处理器至少部分地基于与参考层相关联的预测值和经调整的残差预测值来确定视频单元的值。 调整的残差预测值等于来自参考层的残差预测乘以与1不同的加权因子。

公开(公告)号：US20130329806A1

公开(公告)日：2013-12-12

申请号：US13910023

申请日：2013-06-04

Applicant: QUALCOMM Incorporated

Inventor： Chengjie TU ,  Jianle CHEN ,  Xianglin WANG ,  Marta KARCZEWICZ

IPC: H04N7/26

CPC classification number: H04N19/105 ,  H04N19/157 ,  H04N19/176 ,  H04N19/182 ,  H04N19/30 ,  H04N19/463 ,  H04N19/61 ,  H04N19/70 ,  H04N19/91

Abstract: In one example, an apparatus is configured to code video data. The apparatus comprises a processor configured to determine a base layer reference block for a current block. The base layer reference block may be located in the base layer. The processor is further configured to determine an enhancement layer reference block for the current block. The enhancement layer reference block may comprise a weighted sum of a first reference block located in the enhancement layer and a second reference block located in the enhancement layer. The processor is further configured to determine a reference block from the base layer reference block and the enhancement layer reference block.

Abstract translation: 在一个示例中，设备被配置为对视频数据进行编码。 该装置包括被配置为确定当前块的基本层参考块的处理器。 基层参考块可以位于基层中。 处理器还被配置为确定当前块的增强层参考块。 增强层参考块可以包括位于增强层中的第一参考块和位于增强层中的第二参考块的加权和。 处理器还被配置为从基本层参考块和增强层参考块确定参考块。

公开(公告)号：US20130272409A1

公开(公告)日：2013-10-17

申请号：US13860314

申请日：2013-04-10

Applicant: QUALCOMM INCORPORATED

Inventor： Vadim SEREGIN ,  Muhammed Zeyd COBAN ,  Xianglin WANG ,  Jianle CHEN ,  Marta KARCZEWICZ

IPC: H04N11/02

CPC classification number: H04N19/56 ,  H04N19/172 ,  H04N19/433 ,  H04N19/44 ,  H04N19/51 ,  H04N19/52

Abstract: Techniques for encoding and decoding video data are described. A method of coding video may include determining a plurality of motion vector candidates for a block of video data for use in a motion vector prediction process, wherein each of the motion vector candidates points to a respective reference frame index, performing the motion vector prediction process using the motion vector candidates to determine a motion vector for the block of video data, and performing motion compensation for the block of video data using the motion vector and a common reference frame index, wherein the common reference frame index is used regardless of the respective reference frame index associated with the determined motion vector.

Abstract translation: 描述用于编码和解码视频数据的技术。 编码视频的方法可以包括确定用于运动矢量预测处​​理中的视频数据块的多个运动矢量候选，其中每个运动矢量候选指向相应的参考帧索引，执行运动矢量预测处​​理 使用运动矢量候选来确定视频数据块的运动矢量，并且使用运动矢量和公共参考帧索引对视频数据块执行运动补偿，其中使用公共参考帧索引而不管相应的 与确定的运动矢量相关联的参考帧索引。