公开(公告)号：US09712837B2

公开(公告)日：2017-07-18

申请号：US14656573

申请日：2015-03-12

Applicant: QUALCOMM Incorporated

Inventor： Ye-kui Wang ,  Krishnakanth Rapaka ,  Jianle Chen ,  Fnu Hendry ,  Adarsh Krishnan Ramasubramonian

IPC: H04N19/44 ,  H04N19/156 ,  H04N19/30 ,  H04N19/42

CPC classification number: H04N19/44 ,  H04N19/156 ,  H04N19/30 ,  H04N19/42

Abstract: Methods for defining decoder capability for decoding multi-layer bitstreams containing video information, in which the decoder is implemented based on multiple single-layer decoder cores, are disclosed. In one aspect, the method may include identifying at least one allocation of layers of the bitstream into at least one set of layers. The method may further include detecting whether each set of layers is capable of being exclusively assigned to one of the decoder cores for the decoding of the bitstream. The method may also include determining whether the decoder is capable of decoding the bitstream based at least in part on detecting whether each set of layers is capable of being exclusively assigned to one of the decoder cores.

公开(公告)号：US09712832B2

公开(公告)日：2017-07-18

申请号：US15425738

申请日：2017-02-06

Applicant: QUALCOMM Incorporated

Inventor： Krishnakanth Rapaka ,  Ye-Kui Wang ,  Jianle Chen ,  Marta Karczewicz

IPC: H04N19/187 ,  H04N19/172 ,  H04N19/169 ,  H04N19/30 ,  H04N19/70

CPC classification number: H04N19/187 ,  H04N19/13 ,  H04N19/172 ,  H04N19/188 ,  H04N19/30 ,  H04N19/44 ,  H04N19/70

Abstract: In one example, the disclosure is directed to techniques that include receiving a bitstream comprising at least a syntax element, a first network abstraction layer unit type, and a coded access unit comprising a plurality of pictures. The techniques further include determining a value of the syntax element which indicates whether the access unit was coded using cross-layer alignment. The techniques further include determining the first network abstraction layer unit type for a picture in the access unit and determining whether the first network abstraction layer unit type equals a value in a range of type values. The techniques further include setting a network abstraction layer unit type for all other pictures in the coded access unit to equal the value of the first network abstraction layer unit type if the first network abstraction layer unit type is equal to a value in the range of type values.

公开(公告)号：US09712831B2

公开(公告)日：2017-07-18

申请号：US15425676

申请日：2017-02-06

Applicant: QUALCOMM Incorporated

Inventor： Krishnakanth Rapaka ,  Ye-Kui Wang ,  Jianle Chen ,  Marta Karczewicz

IPC: H04N19/187 ,  H04N19/172 ,  H04N19/169 ,  H04N19/30 ,  H04N19/70 ,  H04N19/44

CPC classification number: H04N19/187 ,  H04N19/13 ,  H04N19/172 ,  H04N19/188 ,  H04N19/30 ,  H04N19/44 ,  H04N19/70

Abstract: In one example, the disclosure is directed to techniques that include receiving a bitstream comprising at least a syntax element, a first network abstraction layer unit type, and a coded access unit comprising a plurality of pictures. The techniques further include determining a value of the syntax element which indicates whether the access unit was coded using cross-layer alignment. The techniques further include determining the first network abstraction layer unit type for a picture in the access unit and determining whether the first network abstraction layer unit type equals a value in a range of type values. The techniques further include setting a network abstraction layer unit type for all other pictures in the coded access unit to equal the value of the first network abstraction layer unit type if the first network abstraction layer unit type is equal to a value in the range of type values.

公开(公告)号：US09648318B2

公开(公告)日：2017-05-09

申请号：US14040290

申请日：2013-09-27

Applicant: QUALCOMM Incorporated

Inventor： Ying Chen ,  Krishnakanth Rapaka ,  Marta Karczewicz ,  Xiang Li ,  Jianle Chen

IPC: H04N19/597 ,  H04N19/30 ,  H04N19/105 ,  H04N19/52 ,  H04N19/513

CPC classification number: H04N19/30 ,  H04N19/105 ,  H04N19/513 ,  H04N19/52 ,  H04N19/597

Abstract: In general, techniques are described for performing residual prediction in video coding. As one example, a device configured to code scalable or multi-view video data may comprise one or more processors configured to perform the techniques. The processors may determine a difference picture, for a current picture, based on a first reference picture in a same layer or view as the current picture and a decoded picture in a different layer or view as the current picture. The decoded picture may be in a same access unit as the first reference picture. The processors may perform bi-prediction based on the difference picture to code at least a portion of the current picture.

公开(公告)号：US09578339B2

公开(公告)日：2017-02-21

申请号：US14196508

申请日：2014-03-04

Applicant: QUALCOMM Incorporated

Inventor： Krishnakanth Rapaka ,  Xiang Li ,  Jianle Chen ,  Ye-Kui Wang ,  Wei Pu

IPC: H04N19/436 ,  H04N19/33 ,  H04N19/17 ,  H04N19/50 ,  H04N19/503 ,  H04N19/70 ,  H04N19/80 ,  H04N19/82

CPC classification number: H04N19/17 ,  H04N19/33 ,  H04N19/436 ,  H04N19/50 ,  H04N19/503 ,  H04N19/70 ,  H04N19/80 ,  H04N19/82

Abstract: In one example, a device for coding video data includes a video coder configured to code a value for a syntax element representative of whether any two reference layer samples, collocated with two respective enhancement layer picture samples within a common enhancement layer tile, must be within a common reference layer tile, and code the enhancement layer picture samples based at least in part on the value of the syntax element.

Abstract translation: 在一个示例中，用于对视频数据进行编码的设备包括视频编码器，该视频编码器被配置为对语法元素的值进行编码，该语法元素表示是否在公共增强层瓦片内与两个相应的增强层图像样本并置的任何两个参考层样本必须在 公共参考层块，并且至少部分地基于语法元素的值来对增强层图像样本进行编码。

公开(公告)号：US09560358B2

公开(公告)日：2017-01-31

申请号：US14334417

申请日：2014-07-17

Applicant: QUALCOMM Incorporated

Inventor： Jianle Chen ,  Vadim Seregin ,  Xiang Li ,  Krishnakanth Rapaka ,  Marta Karczewicz

IPC: H04N19/105 ,  H04N19/70 ,  H04N19/33 ,  H04N19/30 ,  H04N19/157 ,  H04N19/174 ,  H04N19/577

CPC classification number: H04N19/105 ,  H04N19/157 ,  H04N19/174 ,  H04N19/30 ,  H04N19/33 ,  H04N19/577 ,  H04N19/70

Abstract: An apparatus configured to code video information includes a memory and a processor in communication with the memory. The memory is configured to store video information associated with a reference layer and an enhancement layer, the reference layer comprising a reference layer (RL) picture having a first slice and a second slice, and the enhancement layer comprising an enhancement layer (EL) picture corresponding to the RL picture. The processor is configured to generate an inter-layer reference picture (ILRP) by upsampling the RL picture, the ILRP having a single slice associated therewith, set slice information of the single slice of the ILRP equal to slice information of the first slice, and use the ILRP to code at least a portion of the EL picture. The processor may encode or decode the video information.

Abstract translation: 被配置为对视频信息进行编码的装置包括与存储器通信的存储器和处理器。 存储器被配置为存储与参考层和增强层相关联的视频信息，参考层包括具有第一切片和第二切片的参考层（RL）图像，并且增强层包括增强层（EL）图像 对应于RL图片。 处理器被配置为通过对RL图像进行上采样来产生层间参考图片（ILRP），ILRP具有与其相关联的单个切片，将ILRP的单个切片的切片信息设置为等于第一切片的切片信息，以及 使用ILRP来编码EL图片的至少一部分。 处理器可以对视频信息进行编码或解码。

公开(公告)号：US20160337662A1

公开(公告)日：2016-11-17

申请号：US15151429

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 ,  H04N19/176

CPC classification number: H04N19/52 ,  H04N19/176 ,  H04N19/182 ,  H04N19/42 ,  H04N19/513 ,  H04N19/523 ,  H04N19/70

Abstract: An example method of decoding video data includes obtaining, from a video bitstream, a representation of a difference between a motion vector (MV) predictor and a MV that identifies a predictor block for a current block of video data in a current picture; obtaining, from the video bitstream, a syntax element indicating whether adaptive motion vector resolution (AMVR) is used for the current block; determining, based on the representation of the difference between the MV predictor and the MV that identifies the predictor block, a value of the MV; storing the value of the MV at fractional-pixel resolution regardless of whether AMVR is used for the current block and regardless of whether the predictor block is included in the current picture; determining, based on the value of the stored MV, pixel values of the predictor block; and reconstructing the current block based on the pixel values of the predictor block.

Abstract translation: 解码视频数据的示例性方法包括从视频比特流获得运动矢量（MV）预测器和标识当前图像中的当前视频数据块的预测块的MV之间的差异的表示; 从视频比特流获取指示对当前块使用自适应运动矢量分辨率（AMVR）的语法元素; 基于MV预测器和识别预测器块的MV之间的差异的表示来确定MV的值; 无论是否将AMVR用于当前块而不管预测块是否包含在当前图像中，都以分数像素分辨率存储MV的值; 基于所存储的MV的值来确定预测器块的像素值; 并且基于预测器块的像素值来重建当前块。

公开(公告)号：US09467707B2

公开(公告)日：2016-10-11

申请号：US14196295

申请日：2014-03-04

Applicant: QUALCOMM Incorporated

Inventor： Krishnakanth Rapaka ,  Xiang Li ,  Jianle Chen ,  Ye-Kui Wang ,  Wei Pu

IPC: H04N19/436 ,  H04N19/33 ,  H04N19/17 ,  H04N19/50 ,  H04N19/503 ,  H04N19/70 ,  H04N19/80 ,  H04N19/82

CPC classification number: H04N19/17 ,  H04N19/33 ,  H04N19/436 ,  H04N19/50 ,  H04N19/503 ,  H04N19/70 ,  H04N19/80 ,  H04N19/82

Abstract: In one example, a device for coding video data includes a video coder configured to code data representative of whether a tile of an enhancement layer picture can be predicted using inter-layer prediction, and predict data of the tile using inter-layer prediction only when the data indicates that the tile can be predicted using inter-layer prediction.

Abstract translation: 在一个示例中，用于编码视频数据的设备包括：视频编码器，被配置为对表示是否可以使用层间预测来预测增强层图像的片段的数据进行编码;以及仅使用层间预测来预测瓦片的数据， 数据表示可以使用层间预测来预测瓦片。

公开(公告)号：US09467692B2

公开(公告)日：2016-10-11

申请号：US14011441

申请日：2013-08-27

Applicant: QUALCOMM Incorporated

Inventor： Krishnakanth Rapaka ,  Jianle Chen ,  Marta Karczewicz ,  Vadim Seregin

IPC: H04N19/00 ,  H04N19/187 ,  H04N19/593 ,  H04N19/30 ,  H04N19/105 ,  H04N19/176 ,  H04N19/46 ,  H04N19/129 ,  H04N19/11 ,  H04N19/103 ,  H04N19/117 ,  H04N19/136 ,  H04N19/18 ,  H04N19/33 ,  H04N19/59

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：US20160227224A1

公开(公告)日：2016-08-04

申请号：US15006563

申请日：2016-01-26

Applicant: QUALCOMM Incorporated

Inventor： Cheng-Teh Hsieh ,  Vadim Seregin ,  Jianle Chen ,  Rajan Laxman Joshi ,  Krishnakanth Rapaka ,  Marta Karczewicz

IPC: H04N19/186 ,  H04N19/625 ,  H04N19/44 ,  H04N19/176 ,  H04N21/2383 ,  H04N19/96 ,  H04N21/61 ,  H04N19/124 ,  H04N19/13 ,  H04N19/149 ,  H04N19/61 ,  H04N19/82 ,  H04N19/52 ,  H04N21/438

CPC classification number: H04N9/79 ,  H04N5/355 ,  H04N9/64 ,  H04N11/002 ,  H04N11/02 ,  H04N11/042 ,  H04N11/044 ,  H04N19/124 ,  H04N19/13 ,  H04N19/149 ,  H04N19/176 ,  H04N19/184 ,  H04N19/186 ,  H04N19/42 ,  H04N19/44 ,  H04N19/52 ,  H04N19/61 ,  H04N19/625 ,  H04N19/82 ,  H04N19/96 ,  H04N21/2383 ,  H04N21/4382 ,  H04N21/6131 ,  H04N21/6181

Abstract: A device for encoding or decoding video data may clip first residual data based on a bit depth of the first residual data. The device may generate second residual data at least in part by applying an inverse Adaptive Color Transform (TACT) to the first residual data. Furthermore, the device may reconstruct, based on the second residual data, a coding block of a coding unit (CU) of the video data.

Abstract translation: 用于对视频数据进行编码或解码的设备可以基于第一残差数据的比特深度来剪辑第一残差数据。 该装置可以至少部分地通过对第一残差数据应用反自适应颜色变换（TACT）来产生第二残差数据。 此外，设备可以基于第二残差数据重建视频数据的编码单元（CU）的编码块。