公开(公告)号：US09794595B2

公开(公告)日：2017-10-17

申请号：US14657624

申请日：2015-03-13

Applicant: QUALCOMM Incorporated

Inventor： Fnu Hendry ,  Adarsh Krishnan Ramasubramonian ,  Ye-Kui Wang ,  Vadim Seregin

IPC: H04N19/70 ,  H04N19/124 ,  H04N19/88 ,  H04N19/30 ,  H04N19/187 ,  H04N19/169 ,  H04N19/46 ,  H04N19/60 ,  H04N19/172 ,  H04N19/31

CPC classification number: H04N19/70 ,  H04N19/124 ,  H04N19/172 ,  H04N19/187 ,  H04N19/188 ,  H04N19/30 ,  H04N19/31 ,  H04N19/46 ,  H04N19/60

Abstract: An apparatus for coding video information according to certain aspects includes a memory and a processor. The memory is configured to store video information associated with one or more layers. The processor is configured to code a current access unit (AU) in a bitstream including a plurality of layers, the plurality of layers including a reference layer and at least one corresponding enhancement layer. The processor is further configured to code a first end of sequence (EOS) network abstraction layer (NAL) unit associated with the reference layer in the current AU, the first EOS NAL unit having the same layer identifier (ID) as the reference layer. The processor is also configured to code a second EOS NAL unit associated with the enhancement layer in the current AU, the second EOS NAL unit having the same layer ID as the enhancement layer.

公开(公告)号：US09699472B2

公开(公告)日：2017-07-04

申请号：US14695941

申请日：2015-04-24

Applicant: QUALCOMM Incorporated

Inventor： Vadim Seregin ,  Xianglin Wang ,  Marta Karczewicz

IPC: H04N19/52 ,  H04N19/176 ,  H04N19/109 ,  H04N19/159 ,  H04N19/577

CPC classification number: H04N19/52 ,  H04N19/109 ,  H04N19/159 ,  H04N19/176 ,  H04N19/577

Abstract: A computing device determines whether a prediction unit (PU) in a B slice is restricted to uni-directional inter prediction. In addition, the computing device generates a merge candidate list for the PU and determines a selected merge candidate in the merge candidate list. If the PU is restricted to uni-directional inter prediction, the computing device generates a predictive video block for the PU based on no more than one reference block associated with motion information specified by the selected merge candidate. If the PU is not restricted to uni-directional inter prediction, the computing device generates the predictive video block for the PU based on one or more reference blocks associated with the motion information specified by the selected merge candidate.

公开(公告)号：US09648353B2

公开(公告)日：2017-05-09

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: H04N11/02 ,  H04N19/80 ,  H04N19/30 ,  H04N19/46

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.

公开(公告)号：US09648319B2

公开(公告)日：2017-05-09

申请号：US14049649

申请日：2013-10-09

Applicant: QUALCOMM Incorporated

Inventor： Vadim Seregin ,  Ying Chen ,  Jianle Chen

IPC: H04N19/33 ,  H04N19/30 ,  H04N19/50 ,  H04N19/463 ,  H04N19/59 ,  H04N19/55 ,  H04N19/34

CPC classification number: H04N19/30 ,  H04N19/33 ,  H04N19/34 ,  H04N19/463 ,  H04N19/50 ,  H04N19/55 ,  H04N19/59

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 an enhancement layer having a first block and a base layer having a second block, the second block in the base layer corresponding to the first block in the enhancement layer. The processor is configured to predict, by inter layer prediction, the first block in the enhancement layer based on information derived from the second block in the base layer. At least a portion of the second block is located outside of a reference region of the base layer, the reference region being available for use for the inter layer prediction of the first block. The processor may encode or decode the video information.

公开(公告)号：US09621894B2

公开(公告)日：2017-04-11

申请号：US13738602

申请日：2013-01-10

Applicant: Qualcomm Incorporated

Inventor： Vadim Seregin ,  Joel Sole Rojals ,  Marta Karczewicz

IPC: H04N19/119 ,  H04N19/13 ,  H04N19/91 ,  H04N19/18 ,  H03M7/40

CPC classification number: H04N19/119 ,  H03M7/4018 ,  H04N19/13 ,  H04N19/18 ,  H04N19/91

Abstract: In one example, a device for coding video data includes a video coder configured to determine values for coded sub-block flags of one or more neighboring sub-blocks to a current sub-block, determine a context for coding a transform coefficient of the current sub-block based on the values for the coded sub-block flags, and entropy code the transform coefficient using the determined context.

公开(公告)号：US20170034526A1

公开(公告)日：2017-02-02

申请号：US15219159

申请日：2016-07-25

Applicant: QUALCOMM Incorporated

Inventor： Krishnakanth Rapaka ,  Rajan Laxman Joshi ,  Vadim Seregin ,  Marta Karczewicz

IPC: H04N19/513 ,  H04N19/174 ,  H04N19/105 ,  H04N19/159

CPC classification number: H04N19/513 ,  H04N19/105 ,  H04N19/127 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/593

Abstract: Techniques and systems are provided for encoding video data. For example, restrictions on certain prediction modes can be applied for video coding. A restriction can be imposed that prevents inter-prediction bi-prediction from being performed on video data when certain conditions are met. For example, bi-prediction restriction can be based on whether intra-block copy prediction is enabled for one or more coding units or blocks of the video data, whether a value of a syntax element indicates that one or more motion vectors are in non-integer accuracy, whether both motion vectors of a bi-prediction block are in non-integer accuracy, whether the motion vectors of a bi-prediction block are not identical and/or are not from the same reference index, or any combination thereof. If one or more of these conditions are met, the restriction on bi-prediction can be applied, preventing bi-prediction from being performed on certain coding units or blocks.

Abstract translation: 提供了用于编码视频数据的技术和系统。 例如，对某些预测模式的限制可以应用于视频编码。 可以施加限制，其在满足某些条件时防止对视频数据执行帧间预测双预测。 例如，双预测限制可以基于是否对视频数据的一个或多个编码单元或块启用块内复制预测，语法元素的值是否指示一个或多个运动矢量处于非 - 整数精度，双预测块的两个运动矢量是否都是非整数精度，双预测块的运动矢量是否不相同和/或不是相同的参考索引，或其任何组合。 如果满足这些条件中的一个或多个，则可以应用对双预测的限制，防止对某些编码单元或块执行双重预测。

公开(公告)号：US09521410B2

公开(公告)日：2016-12-13

申请号：US13870149

申请日：2013-04-25

Applicant: QUALCOMM Incorporated

Inventor： Vadim Seregin ,  Xianglin Wang

IPC: H04N19/124 ,  H04N19/61 ,  H04N19/70 ,  H04N19/126

CPC classification number: H04N19/61 ,  H04N19/124 ,  H04N19/126 ,  H04N19/70

Abstract: A method of coding delta quantization parameter values is described. In one example a video decoder may receive a delta quantization parameter (dQP) value for a current quantization block of video data, wherein the dQP value is received whether or not there are non-zero transform coefficients in the current quantization block. In another example, a video decoder may receive the dQP value for the current quantization block of video data only in the case that the QP Predictor for the current quantization block has a value of zero, and infer the dQP value to be zero in the case that the QP Predictor for the current quantization block has a non-zero value, and there are no non-zero transform coefficients in the current quantization block.

Abstract translation: 描述了编码δ量化参数值的方法。 在一个示例中，视频解码器可以接收视频数据的当前量化块的增量量化参数（dQP）值，其中接收当前量化块中是否存在非零变换系数的dQP值。 在另一示例中，视频解码器可以仅在当前量化块的QP Predictor具有零值的情况下接收当前视频数据量化块的dQP值，并且在该情况下将dQP值推定为零 当前量化块的QP Predictor具有非零值，并且在当前量化块中不存在非零变换系数。

公开(公告)号：US20160345030A1

公开(公告)日：2016-11-24

申请号：US15158795

申请日：2016-05-19

Applicant: QUALCOMM Incorporated

Inventor： Marta Karczewicz ,  Feng Zou ,  Vadim Seregin ,  Wei Pu ,  Rajan Laxman Joshi

IPC: H04N19/91 ,  H04N19/172 ,  H04N19/186 ,  H04N19/124 ,  H04N19/187 ,  H04N19/70 ,  H04N19/176

CPC classification number: H04N19/91 ,  H04N19/124 ,  H04N19/13 ,  H04N19/172 ,  H04N19/176 ,  H04N19/186 ,  H04N19/187 ,  H04N19/463 ,  H04N19/593 ,  H04N19/70

Abstract: A device for decoding video data is configured to determine, based on first entropy encoded data in the bitstream, a set of run-related syntax element groups for a current block of a current picture of the video data; determine, based on second entropy encoded data the bitstream, a set of palette index syntax elements for the current block, the first entropy encoded data occurring in the bitstream before the second entropy encoded data, wherein: each respective run-related syntax element group of the set of run-related syntax element groups indicates a respective type of a respective run of identical palette mode type indicators and a respective length of the respective run and each respective palette index syntax element of the set of palette index syntax elements indicates an entry in a palette comprising a set of sample values; and reconstruct, based on the sample values in the palette, the current block.

Abstract translation: 用于解码视频数据的设备被配置为基于比特流中的第一熵编码数据来确定视频数据的当前图片的当前块的一组运行相关语法元素组; 基于第二熵编码数据确定比特流，用于当前块的一组调色板索引语法元素，在第二熵编码数据之前在比特流中出现的第一熵编码数据，其中：每个相应的运行相关语法元素组 运行相关语法元素组的集合指示相同调色板模式类型指示符的相应运行的相应类型，并且相应运行的相应长度以及调色板索引语法元素组中的每个相应调色板索引语法元素指示 调色板，包括一组样本值; 并根据调色板中的样本值重建当前块。

公开(公告)号：US20160337661A1

公开(公告)日：2016-11-17

申请号：US15151416

申请日：2016-05-10

Applicant: QUALCOMM Incorporated

Inventor： Chao Pang ,  Krishnakanth Rapaka ,  Vadim Seregin ,  Marta Karczewicz ,  Rajan Laxman Joshi

IPC: H04N19/52 ,  H04N19/182 ,  H04N19/105 ,  H04N19/61

CPC classification number: H04N19/52 ,  H04N19/105 ,  H04N19/182 ,  H04N19/186 ,  H04N19/503 ,  H04N19/523 ,  H04N19/57 ,  H04N19/593 ,  H04N19/61

Abstract: An example method of encoding video data includes determining a resolution that will be used for a motion vector that identifies a predictor block in a current picture of video data for a current block in the current picture of video data; determining, based on the determined resolution, a search region for the current block such that a size of the search region is smaller where the resolution is fractional-pixel than where the resolution is integer-pixel; selecting, from within the search region, a predictor block for the current block; determining the motion vector that identifies the selected predictor block for the current block; and encoding, in a coded video bitstream, a representation of the motion vector.

Abstract translation: 编码视频数据的示例方法包括确定将用于识别视频数据的当前图像中的当前块的视频数据的当前图像中的预测块的运动矢量的分辨率; 基于所确定的分辨率，确定当前块的搜索区域，使得搜索区域的尺寸小于分辨率是分数像素而不是分辨率是整数像素的尺寸; 从搜索区域内选择当前块的预测块; 确定识别当前块的所选预测器块的运动矢量; 并且在编码视频比特流中对运动矢量的表示进行编码。

公开(公告)号：US09420286B2

公开(公告)日：2016-08-16

申请号：US13917538

申请日：2013-06-13

Applicant: QUALCOMM Incorporated

Inventor： Ying Chen ,  Vadim Seregin

IPC: H04N7/34 ,  H04N19/593 ,  H04N19/597 ,  H04N19/513 ,  H04N19/58

CPC classification number: H04N19/593 ,  H04N19/513 ,  H04N19/58 ,  H04N19/597

Abstract: In one example, a device includes a video coder configured to determine, for each reference picture in one or more reference picture lists for a current picture, whether the reference picture is to be included in a plurality of reference pictures based on types for the reference pictures in the reference picture lists, compare picture order count (POC) values of each of the plurality of reference pictures to a POC value of the current picture to determine a motion vector predictor for a current block based on motion vectors of a co-located block of video data in a reference picture of the plurality of reference pictures, determine whether a forward motion vector or a backward motion vector of the co-located block is to be initially used to derive the motion vector predictor, and code a motion vector for the current block of video data relative to the motion vector predictor.

Abstract translation: 在一个示例中，设备包括视频编码器，其被配置为针对当前图片的一个或多个参考图片列表中的每个参考图片确定参考图片是否将被包括在基于参考的类型的多个参考图片中 参考图片列表中的图像，将多个参考图像中的每一个的图像顺序计数（POC）值与当前图像的POC值进行比较，以基于同位置的运动矢量来确定当前块的运动矢量预测器 确定多个参考图片的参考图片中的视频数据的块是否最初用于导出运动矢量预测器，并且将运动矢量编码为 当前视频数据块相对于运动矢量预测器。