公开(公告)号：US20150264402A1

公开(公告)日：2015-09-17

申请号：US14656526

申请日：2015-03-12

Applicant: QUALCOMM Incorporated

Inventor： Li Zhang ,  Jianle Chen ,  Marta Karczewicz ,  Joel Sole Rojals ,  Woo-Shik Kim

IPC: H04N19/60 ,  H04N19/18 ,  H04N19/186 ,  H04N19/136 ,  H04N19/12 ,  H04N19/11

CPC classification number: H04N19/126 ,  H04N19/102 ,  H04N19/103 ,  H04N19/11 ,  H04N19/12 ,  H04N19/134 ,  H04N19/136 ,  H04N19/14 ,  H04N19/154 ,  H04N19/157 ,  H04N19/176 ,  H04N19/18 ,  H04N19/184 ,  H04N19/186 ,  H04N19/196 ,  H04N19/33 ,  H04N19/44 ,  H04N19/60 ,  H04N19/61 ,  H04N19/70

Abstract: In general, this disclosure describes techniques for coding video blocks using a color-space conversion process. A video coder, such as a video encoder or a video decoder, may determine a bit-depth of a luma component of the video data and a bit-depth of a chroma component of the video data. In response to the bit-depth of the luma component being different than the bit depth of the chroma component, the video coder may modify one or both of the bit depth of the luma component and the bit depth of the chroma component such that the bit depths are equal. The video coder may further apply the color-space transform process in encoding the video data.

Abstract translation: 通常，本公开描述了使用颜色空间转换处理对视频块进行编码的技术。 诸如视频编码器或视频解码器的视频编码器可以确定视频数据的亮度分量的比特深度和视频数据的色度分量的位深度。 响应于亮度分量的比特深度不同于色度分量的比特深度，视频编码器可以修改亮度分量的比特深度和色度分量的比特深度中的一个或两个，使得比特 深度相等。 视频编码器还可以在编码视频数据时进一步应用色空间变换处理。

公开(公告)号：US20150264387A1

公开(公告)日：2015-09-17

申请号：US14659122

申请日：2015-03-16

Applicant: QUALCOMM Incorporated

Inventor： Krishnakanth Rapaka ,  Joel Sole Rojals ,  Li Zhang ,  Marta Karczewicz

IPC: H04N19/513

Abstract: A method for motion estimation for screen and non-natural content coding is disclosed. In one aspect, the method may include selecting a candidate block of a first frame of the video data for matching with a current block of a second frame of the video data, calculating a first partial matching cost for matching a first subset of samples of the candidate block to the current block, and determining whether the candidate block has a lowest matching cost with the current block based at least in part on the first partial matching cost.

Abstract translation: 公开了一种用于屏幕和非自然内容编码的运动估计的方法。 一方面，该方法可以包括：选择视频数据的第一帧的候选块以与视频数据的第二帧的当前块匹配，计算用于匹配第一部分匹配成本 候选块到当前块，并且至少部分地基于第一部分匹配成本来确定候选块是否与当前块具有最低匹配成本。

公开(公告)号：US09131217B2

公开(公告)日：2015-09-08

申请号：US13705853

申请日：2012-12-05

Applicant: QUALCOMM Incorporated

Inventor： Li Zhang ,  Ying Chen ,  Marta Karczewicz

IPC: H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/50 ,  H04N19/597 ,  H04N19/70

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：US20150055704A1

公开(公告)日：2015-02-26

申请号：US14463431

申请日：2014-08-19

Applicant: QUALCOMM Incorporated

Inventor： Li Zhang ,  Ying Chen ,  Marta Karczewicz

IPC: H04N19/51

CPC classification number: H04N19/52 ,  H04N19/51 ,  H04N19/597 ,  H04N19/96

Abstract: A prediction unit (PU) of a coding unit (CU) is split into two or more sub-PUs including a first sub-PU and a second sub-PU. A first motion vector of a first type is obtained for the first sub-PU and a second motion vector of the first type is obtained for the second sub-PU. A third motion vector of a second type is obtained for the first sub-PU and a fourth motion vector of the second type is obtained for the second sub-PU, such that the second type is different than the first type. A first portion of the CU corresponding to the first sub-PU is coded according to advanced residual prediction (ARP) using the first and third motion vectors. A second portion of the CU corresponding to the second sub-PU is coded according to ARP using the second and fourth motion vectors.

Abstract translation: 编码单元（CU）的预测单元（PU）被分成包括第一子PU和第二子PU的两个或更多个子PU。 对于第一子PU获得第一类型的第一运动矢量，并且获得第二子PU的第一类型的第二运动矢量。 对于第一子PU获得第二类型的第三运动矢量，并且为第二子PU获得第二类型的第四运动矢量，使得第二类型不同于第一类型。 对应于第一子PU的CU的第一部分使用第一和第三运动向量根据高级剩余预测（ARP）进行编码。 使用第二和第四运动矢量，根据ARP对与第二子PU相对应的CU的第二部分进行编码。

公开(公告)号：US20150023422A1

公开(公告)日：2015-01-22

申请号：US14332105

申请日：2014-07-15

Applicant: QUALCOMM Incorporated

Inventor： Li Zhang ,  Ying Chen ,  Marta Karczewicz

IPC: H04N19/11 ,  H04N19/182 ,  H04N19/14 ,  H04N19/583 ,  H04N19/51

CPC classification number: H04N19/182 ,  H04N19/105 ,  H04N19/11 ,  H04N19/14 ,  H04N19/159 ,  H04N19/174 ,  H04N19/51 ,  H04N19/513 ,  H04N19/597 ,  H04N19/70

Abstract: In one example, a device for coding (e.g., encoding or decoding) video data includes a memory configured to store video data and a video coder configured to determine a value for an advanced residual prediction (ARP) weighting factor of a current block of the video data and to skip coding of an illumination compensation syntax element for the current block and to code the current block when the value of the ARP weighting factor is not equal to zero. The video coder may further be configured to code the illumination compensation syntax element for the current block and code the current block based at least in part on the value of the illumination compensation syntax element when the value of the ARP weighting factor is equal to zero.

Abstract translation: 在一个示例中，用于编码（例如，编码或解码）视频数据的设备包括被配置为存储视频数据的存储器和视频编码器，视频编码器被配置为确定当前块的当前块的高级剩余预测（ARP）加权因子的值 视频数据，并跳过当前块的照明补偿语法元素的编码，并且当ARP加权因子的值不等于零时对当前块进行编码。 视频编码器还可以被配置为当ARP加权因子的值等于零时，至少部分地基于照明补偿语法元素的值，为当前块编码照明补偿语法元素并对当前块进行编码。

公开(公告)号：US20150003529A1

公开(公告)日：2015-01-01

申请号：US14316145

申请日：2014-06-26

Applicant: QUALCOMM Incorporated

Inventor： Vijayaraghavan Thirumalai ,  Li Zhang ,  Ying Chen

IPC: H04N19/597 ,  H04N19/56 ,  H04N19/51

CPC classification number: H04N19/597 ,  H04N19/52 ,  H04N19/70

Abstract: An example video coding device is configured to compare an inter-view predicted motion vector candidate (IPMVC) to a motion vector inheritance (MVI) candidate, where the IPMVC and the MVI candidate are each associated with a block of video data in a dependent depth view, and where the IPMVC is generated from a corresponding block of video data in a base depth view. The video coding device may be further configured to perform one of adding the IPMVC to a merge candidate list based on the IPMVC being different from the MVI candidate, or omitting the IPMVC from the merge candidate list based on the IPMVC being identical to the MVI candidate.

Abstract translation: 示例性视频编码设备被配置为将视频间预测运动矢量候选（IPMVC）与运动矢量继承（MVI）候选者进行比较，其中IPMVC和MVI候选者各自与依赖深度的视频数据块相关联 视图，以及在基本深度视图中从相应的视频数据块生成IPMVC的位置。 视频编码装置还可以被配置为基于与MVI候选者不同的IPMVC来将IPMVC添加到合并候选列表中，或者基于与MVI候选者相同的IPMVC从合并候选列表中省略IPMVC 。

公开(公告)号：US20140267605A1

公开(公告)日：2014-09-18

申请号：US14216232

申请日：2014-03-17

Applicant: QUALCOMM Incorporated

Inventor： Vijayaraghavan Thirumalai ,  Li Zhang ,  Ying Chen ,  Marta Karczewicz

IPC: H04N13/00

CPC classification number: H04N13/161 ,  H04N19/597

Abstract: A device for coding three-dimensional video data includes a video coder configured to determine a first block of a first texture view is to be coded using a block-based view synthesis mode; locate, in a depth view, a first depth block that corresponds to the first block of the first texture view; determine depth values of two or more corner positions of the first depth block; based on the depth values, derive a disparity vector for the first block; using the disparity vector, locate a first block of a second texture view; and, inter-predict the first block of the first texture view using the first block of the second texture view.

Abstract translation: 一种用于对三维视频数据进行编码的设备包括：视频编码器，被配置为使用基于块的视图合成模式来确定要编码的第一纹理图像的第一块; 在深度视图中定位与第一纹理视图的第一块对应的第一深度块; 确定第一深度块的两个或多个角位置的深度值; 基于深度值，导出第一块的视差向量; 使用视差向量，定位第二纹理视图的第一块; 并且使用第二纹理视图的第一块来相互预测第一纹理视图的第一块。

公开(公告)号：US20140241431A1

公开(公告)日：2014-08-28

申请号：US14189679

申请日：2014-02-25

Applicant: QUALCOMM Incorporated

Inventor： Li Zhang ,  Ying Chen ,  Jewon Kang

IPC: H04N19/583 ,  H04N19/597 ,  H04N19/51

CPC classification number: H04N19/51 ,  H04N19/44 ,  H04N19/52 ,  H04N19/53 ,  H04N19/56

Abstract: In one example of the disclosure, a method of coding video data comprises coding video data using texture-first coding, and performing an NBDV derivation process for a block of the video data using a plurality of neighboring blocks. The NBDV derivation process comprises designating a motion vector associated with a neighboring block of the plurality of neighboring blocks coded with a block-based view synthesis prediction (BVSP) mode as an available disparity motion.

公开(公告)号：US20140071235A1

公开(公告)日：2014-03-13

申请号：US14024058

申请日：2013-09-11

Applicant: QUALCOMM Incorporated

Inventor： Li Zhang ,  Ying Chen ,  Marta Karczewicz

IPC: H04N7/32

CPC classification number: H04N19/597 ,  H04N19/52 ,  H04N19/70

Abstract: This disclosure describes techniques for improving coding efficiency of motion prediction in multiview and 3D video coding. In one example, a method of decoding video data comprises deriving one or more disparity vectors for a current block, the disparity vectors being derived from neighboring blocks relative to the current block, converting a disparity vector to one or more of inter-view predicted motion vector candidates and inter-view disparity motion vector candidates, adding the one or more inter-view predicted motion vector candidates and the one or more inter-view disparity motion vector candidates to a candidate list for a motion vector prediction mode, and decoding the current block using the candidate list.

Abstract translation: 本公开描述了用于提高多视图和3D视频编码中运动预测的编码效率的技术。 在一个示例中，解码视频数据的方法包括导出当前块的一个或多个视差矢量，相对于当前块从相邻块导出视差向量，将视差向量转换成视角间预测运动中的一个或多个 矢量候选和视角间视差运动矢量候补，将一个或多个视点间预测运动矢量候选和一个或多个视点间视差运动矢量候选添加到用于运动矢量预测模式的候选列表，并且解码当前 阻止使用候选人名单。

公开(公告)号：US20140049604A1

公开(公告)日：2014-02-20

申请号：US13968140

申请日：2013-08-15

Applicant: QUALCOMM INCORPORATED

Inventor： Ying Chen ,  Li Zhang ,  Adarsh Krishnan Ramasubramonian

IPC: H04N13/00

CPC classification number: H04N13/161 ,  H04N19/597 ,  H04N19/70

Abstract: In one example, a video coder, such as a video encoder or a video decoder, is configured to code a value for a layer identifier in a slice header for a current slice in a current layer of multi-layer video data, and, when the value for the layer identifier is not equal to zero, code a first set of syntax elements in accordance with a base video coding standard, and code a second set of one or more syntax elements in accordance with an extension to the base video coding standard. The second set of syntax elements may include a syntax element representative of a position for an identifier of an inter-layer reference picture of a reference layer in a reference picture list, and the video coder may construct the reference picture list such that the identifier of the inter-layer reference picture is located in the determined position.

Abstract translation: 在一个示例中，诸如视频编码器或视频解码器的视频编码器被配置为对当前层中多层视频数据中的当前片段的片标题中的层标识符的值进行编码，并且当 层标识符的值不等于零，根据基本视频编码标准对第一组语法元素进行编码，并且根据对基本视频编码标准的扩展来编码第二组一个或多个语法元素 。 第二组语法元素可以包括表示参考图片列表中参考层的层间参考图片的标识符的位置的语法元素，并且视频编码器可以构建参考图片列表，使得参考图片列表的标识符 层间参考图片位于确定的位置。