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：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：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：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：US20130258052A1

公开(公告)日：2013-10-03

申请号：US13771897

申请日：2013-02-20

Applicant: QUALCOMM INCORPORATED

Inventor： Xiang LI ,  Ying CHEN ,  Marta KARCZEWICZ

IPC: H04N13/00

CPC classification number: H04N13/161 ,  H04N19/597

Abstract: In general, this disclosure describes techniques for improved inter-view residual prediction (IVRP) in three-dimensional video coding. These techniques include determining IVRP availability based on coded block flags and coding modes of residual reference blocks, disallowing IVRP coding when a block is inter-view predicted, using picture order count (POC) values to determine whether IVRP is permitted, applying IVRP to prediction units (PUs) rather than coding units (CUs), inferring values of IVRP flags when a block is skip or merge mode coded, using an IVRP flag of a neighboring block to determine context for coding an IVRP flag of a current block, and avoiding resetting of samples of a residual reference block to zeros during generation.

Abstract translation: 一般来说，本公开描述了三维视频编码中用于改进视角间残差预测（IVRP）的技术。 这些技术包括基于编码块标志和残差参考块的编码模式确定IVRP可用性，当块被视图预测时不允许IVRP编码，使用图像顺序计数（POC）值来确定是否允许IVRP，将IVRP应用于预测 单位（PU）而不是编码单位（CU），当块被跳过或合并模式编码时推断IVRP标志的值，使用相邻块的IVRP标志来确定用于对当前块的IVRP标志进行编码的上下文，并避免 在生成期间将残差参考块的样本重置为零。