公开(公告)号：US20140177720A1

公开(公告)日：2014-06-26

申请号：US14133951

申请日：2013-12-19

Applicant: QUALCOMM Incorporated

Inventor： Li Zhang ,  Ying Chen

IPC: H04N19/583

CPC classification number: H04N19/52 ,  H04N19/597

Abstract: Techniques are described for determining whether a block in a candidate reference picture is available. A video coder may determine a location of a co-located largest coding unit (CLCU) in the candidate reference picture, where the CLCU is co-located with a LCU in a current picture, and the LCU includes a current block that is to be inter-predicted. The video coder may determine whether a block in the candidate reference picture is available based on a location of the block in the candidate reference picture relative to the location of the CLCU. If the block in the candidate reference picture is unavailable, the video coder may derive a disparity vector for the current block from a block other than the block determined to be unavailable.

Abstract translation: 描述了用于确定候选参考图片中的块是否可用的技术。 视频编码器可以在候选参考图像中确定共同位置最大编码单元（CLCU）的位置，其中CLCU与当前图像中的LCU位于同一位置，并且LCU包括将要存在的当前块 相互预测。 视频编码器可以基于候选参考图片中的块相对于CLCU的位置的位置来确定候选参考图片中的块是否可用。 如果候选参考图像中的块不可用，则视频编码器可以从除被确定为不可用的块之外的块中导出当前块的视差矢量。

公开(公告)号：US20140169475A1

公开(公告)日：2014-06-19

申请号：US14107144

申请日：2013-12-16

Applicant: QUALCOMM Incorporated

Inventor： Li Zhang ,  Ying Chen ,  Marta Karczewicz

IPC: H04N19/51

CPC classification number: H04N19/513 ,  H04N19/573 ,  H04N19/593 ,  H04N19/597

Abstract: During a process to derive an inter-view predicted motion vector candidate (IPMVC) for an Advanced Motion Vector Prediction (AMVP) candidate list, a video coder determines, based on a disparity vector of a current prediction unit (PU), a reference PU for the current PU. Furthermore, when a first reference picture of the reference PU has the same picture order count (POC) value as a target reference picture of the current PU, the video coder determines an IPMVC based on a first motion vector of the reference PU. Otherwise, when a second reference picture of the reference PU has the same POC value as the target reference picture of the current PU, the video coder determines the IPMVC based on a second motion vector of the reference PU.

Abstract translation: 在导出用于高级运动矢量预测（AMVP）候选列表的视角间预测运动矢量候选（IPMVC）的过程中，视频编码器基于当前预测单元（PU）的视差向量来确定参考PU 用于当前的PU。 此外，当参考PU的第一参考图像具有与当前PU的目标参考图片相同的图像顺序计数（POC）值时，视频编码器基于参考PU的第一运动矢量来确定IPMVC。 否则，当参考PU的第二参考图像具有与当前PU的目标参考图像相同的POC值时，视频编码器基于参考PU的第二运动矢量来确定IPMVC。

公开(公告)号：US20140169474A1

公开(公告)日：2014-06-19

申请号：US14104095

申请日：2013-12-12

Applicant: QUALCOMM INCORPORATED

Inventor： Jewon Kang ,  Ying Chen ,  Li Zhang ,  Marta Karczewicz

IPC: H04N19/593

CPC classification number: H04N13/128 ,  H04N19/105 ,  H04N19/11 ,  H04N19/156 ,  H04N19/176 ,  H04N19/44 ,  H04N19/52 ,  H04N19/55 ,  H04N19/593 ,  H04N19/597

Abstract: A device performs a disparity vector derivation process to determine a disparity vector for a current block. As part of performing the disparity vector derivation process, when either a first or a second spatial neighboring block has a disparity motion vector or an implicit disparity vector, the device converts the disparity motion vector or the implicit disparity vector to the disparity vector for the current block. The number of neighboring blocks that is checked in the disparity vector derivation process is reduced, potentially resulting in decreased complexity and memory bandwidth requirements.

Abstract translation: 设备执行视差矢量导出处理以确定当前块的视差矢量。 作为执行视差矢量导出处理的一部分，当第一或第二空间相邻块具有视差运动矢量或隐式视差向量时，装置将视差运动矢量或隐式视差矢量转换为电流的视差矢量 块。 在视差向量导出过程中检查的相邻块的数量减少，潜在地导致复杂度降低和存储器带宽需求降低。

公开(公告)号：US20140161187A1

公开(公告)日：2014-06-12

申请号：US14098333

申请日：2013-12-05

Applicant: QUALCOMM Incorporated

Inventor： Li Zhang ,  Ying Chen ,  Marta Karczewicz

IPC: H04N7/32

CPC classification number: H04N19/31 ,  H04N19/103 ,  H04N19/105 ,  H04N19/107 ,  H04N19/136 ,  H04N19/176 ,  H04N19/187 ,  H04N19/30 ,  H04N19/577 ,  H04N19/597 ,  H04N19/61 ,  H04N19/70

Abstract: In an example, a method of coding multi-layer video data includes determining, for a first block of video data at a first temporal location, whether one or more reference picture lists for coding the first block contain at least one reference picture at a second, different temporal location. The method also includes coding the first block of video data relative to at least one reference block of video data of a reference picture in the one or more reference picture lists, where coding includes disabling an inter-view residual prediction process when the one or more reference picture lists do not include at least one reference picture at the second temporal location.

Abstract translation: 在一个示例中，一种编码多层视频数据的方法包括：对于第一时间位置处的视频数据的第一块确定用于编码第一块的一个或多个参考图像列表是否在第二块包含至少一个参考图片 ，不同的时间位置。 该方法还包括相对于一个或多个参考图像列表中的参考图像的视频数据的至少一个参考块来编码视频数据的第一块，其中编码包括当一个或多个参考图片列表中禁用视频间残差预测处理 参考图片列表在第二时间位置不包括至少一个参考图片。

公开(公告)号：US20140161186A1

公开(公告)日：2014-06-12

申请号：US14098151

申请日：2013-12-05

Applicant: QUALCOMM Incorporated

Inventor： Li Zhang ,  Ying Chen ,  Marta Karczewicz

IPC: H04N19/51 ,  H04N19/103

CPC classification number: H04N19/52 ,  H04N19/103 ,  H04N19/597

Abstract: Techniques are described where if an inter-view predicted motion vector candidate (IPMVC) and an inter-view disparity motion vector candidate (IDMVC) are derived based on a shifted disparity vector, where the amount by which the disparity vector is shifted for the IPMVC and IDMVC is different. The techniques also prioritize the inclusion of the IPMVC over the IDMVC in a candidate list, and prune the IPMVC and the IDMVC if there is a duplicated IPMVC or IDMVC in the candidate list.

Abstract translation: 描述技术，其中如果基于移动的视差矢量导出视角间预测运动矢量候选（IPMVC）和视角间视差运动矢量候选（IDMVC），其中视差矢量对于IPMVC移位的量 和IDMVC是不同的。 这些技术还优先考虑IPMVC在候选列表中的IDMVC，并且如果候选列表中存在复制的IPMVC或IDMVC，则修剪IPMVC和IDMVC。

公开(公告)号：US20140161175A1

公开(公告)日：2014-06-12

申请号：US14098357

申请日：2013-12-05

Applicant: QUALCOMM INCORPORATED

Inventor： Li Zhang ,  Ying Chen ,  Marta Karczewicz

IPC: H04N19/159 ,  H04N19/597 ,  H04N19/105

CPC classification number: H04N19/31 ,  H04N19/103 ,  H04N19/105 ,  H04N19/107 ,  H04N19/136 ,  H04N19/176 ,  H04N19/187 ,  H04N19/30 ,  H04N19/577 ,  H04N19/597 ,  H04N19/61 ,  H04N19/70

Abstract: In an example, a method of coding video data includes determining a partition mode for coding a block of video data, where the partition mode indicates a division of the block of video data for predictive coding. The method also includes determining whether to code a weighting factor for an inter-view residual prediction process based on the partition mode, where, when the weighting factor is not coded, the inter-view residual prediction process is not applied to predict a residual for the block. The method also includes coding the block of video data with the determined partition mode.

Abstract translation: 在一个示例中，视频数据的编码方法包括：确定用于对视频数据块进行编码的分区模式，其中分割模式指示用于预测编码的视频数据块的划分。 该方法还包括基于分区模式来确定是否对视角间残差预测处理的加权因子进行编码，其中，当加权因子未被编码时，未应用视角间残差预测处理来预测残差， 块。 该方法还包括用确定的分区模式对视频数据块进行编码。

公开(公告)号：US20140139627A1

公开(公告)日：2014-05-22

申请号：US14084347

申请日：2013-11-19

Applicant: QUALCOMM Incorporated

Inventor： Ying Chen ,  Jewon Kang ,  Li Zhang

IPC: H04N13/00

CPC classification number: H04N13/161 ,  H04N19/105 ,  H04N19/176 ,  H04N19/597 ,  H04N19/61 ,  H04N19/70

Abstract: A method of coding video data includes deriving prediction weights for illumination compensation of luma samples of a video block partition once for the video block partition such that the video block partition has a common set of prediction weights for performing illumination compensation of the luma samples regardless of a transform size for the video block partition, calculating a predicted block for the video block partition using the prediction weights using illumination compensation, and coding the video block partition using the predicted block.

Abstract translation: 一种编码视频数据的方法包括导出用于视频块分区的视频块分区一次的亮度样本的照明补偿的预测权重，使得视频块分区具有用于执行亮度样本的照明补偿的公共预测权重集，而不管 视频块分割的变换大小，使用照明补偿使用预测权重计算视频块分割的预测块，以及使用预测块对视频块分割进行编码。

公开(公告)号：US20140098882A1

公开(公告)日：2014-04-10

申请号：US14045705

申请日：2013-10-03

Applicant: QUALCOMM Incorporated

Inventor： Li Zhang ,  Ying Chen

IPC: H04N7/26 ,  H04N7/36

CPC classification number: H04N19/44 ,  H04N13/161 ,  H04N19/105 ,  H04N19/119 ,  H04N19/52 ,  H04N19/521 ,  H04N19/597

Abstract: For a depth block in a depth view component, a video coder derives a motion information candidate that comprises motion information of a corresponding texture block in a decoded texture view component, adds the motion information candidate to a candidate list for use in a motion vector prediction operation, and codes the current block based on a candidate in the candidate list.

Abstract translation: 对于深度视图分量中的深度块，视频编码器导出包括解码纹理视图分量中的对应纹理块的运动信息的运动信息候选，将运动信息候选添加到运动矢量预测中使用的候选列表 操作，并且基于候选列表中的候选来对当前块进行编码。

公开(公告)号：US20130148722A1

公开(公告)日：2013-06-13

申请号：US13705853

申请日：2012-12-05

Applicant: QUALCOMM Incorporated

Inventor： Li Zhang ,  Ying Chen ,  Marta Karczewicz

IPC: H04N7/26

CPC classification number: H04N19/50 ,  H04N19/597 ,  H04N19/70

Abstract: A video encoder generates a bitstream that includes a reference picture list modification (RPLM) command. The RPLM command belongs to a type of RPLM commands for inserting short-term reference pictures into reference picture lists. The RPLM command instructs a video decoder to insert a synthetic reference picture into the reference picture list. The video decoder decodes, based at least in part on syntax elements parsed from the bitstream, one or more view components and generates, based at least in part on the one or more view components, the synthetic reference picture. The video decoder modifies, in response to the RPLM commands, a reference picture list to include the synthetic reference picture. The video decoder may use one or more pictures in the reference picture list as reference pictures to perform inter prediction on one or more video blocks of a picture.

Abstract translation: 视频编码器生成包括参考图像列表修改（RPLM）命令的比特流。 RPLM命令属于用于将短期参考图像插入到参考图片列表中的RPLM命令的类型。 RPLM命令指示视频解码器将合成参考图像插入到参考图像列表中。 视频解码器至少部分地基于从比特流解析的语法元素解码一个或多个视图分量，并且至少部分地基于一个或多个视图组件生成合成参考图片。 视频解码器响应于RPLM命令修改参考图片列表以包括合成参考图片。 视频解码器可以使用参考图像列表中的一个或多个图像作为参考图像来对图像的一个或多个视频块执行帧间预测。

公开(公告)号：US20240357131A1

公开(公告)日：2024-10-24

申请号：US18757156

申请日：2024-06-27

Applicant: QUALCOMM Incorporated

Inventor： Kai Zhang ,  Jianle Chen ,  Li Zhang ,  Xiang Li ,  Marta Karczewicz

IPC: H04N19/159 ,  H04N19/107 ,  H04N19/11 ,  H04N19/124 ,  H04N19/139 ,  H04N19/176 ,  H04N19/182 ,  H04N19/44 ,  H04N19/463 ,  H04N19/503 ,  H04N19/513 ,  H04N19/593 ,  H04N19/186

CPC classification number: H04N19/159 ,  H04N19/107 ,  H04N19/11 ,  H04N19/124 ,  H04N19/139 ,  H04N19/176 ,  H04N19/182 ,  H04N19/44 ,  H04N19/463 ,  H04N19/503 ,  H04N19/513 ,  H04N19/593 ,  H04N19/186

Abstract: Techniques are described for using an inter-intra-prediction block. A video coder may generate a first prediction block according to an intra-prediction mode and generate a second prediction block according to an inter-prediction mode. The video coder may weighted combine, such as based on the intra-prediction mode, the two prediction blocks to generate an inter-intra-prediction block (e.g., final prediction block). In some examples, an inter-intra candidate is identified in a list of candidate motion vector predictors, and an inter-intra-prediction block is used based on identification of the inter-intra candidate in the list of candidate motion vector predictors.