公开(公告)号：US09900576B2

公开(公告)日：2018-02-20

申请号：US14216232

申请日：2014-03-17

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/597 ,  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.

公开(公告)号：US09843816B2

公开(公告)日：2017-12-12

申请号：US14691376

申请日：2015-04-20

Applicant: QUALCOMM Incorporated

Inventor： Natan Haim Jacobson ,  Vijayaraghavan Thirumalai ,  Rajan Laxman Joshi ,  Min Dai

IPC: H04N19/10 ,  H04N19/196 ,  H04N19/167 ,  H04N19/593 ,  H04N19/94

CPC classification number: H04N19/196 ,  H04N19/167 ,  H04N19/593 ,  H04N19/94

Abstract: A system and method for coding video data in pattern mode for display stream compression (DSC) is disclosed. In one aspect, the method includes determining that a first pattern in a current block of video data is not in a pattern database comprising a plurality of patterns, and adding the first pattern to the pattern database. The first pattern may be associated with a first index identifying a location of the first pattern in the pattern database. The method further includes coding the current block in pattern mode at least in part via signaling (i) the first pattern determined not to be in the pattern database and (ii) the first index identifying the location of the first pattern in the first database.

公开(公告)号：US20170332084A1

公开(公告)日：2017-11-16

申请号：US15590261

申请日：2017-05-09

Applicant: QUALCOMM Incorporated

Inventor： Vadim Seregin ,  Xin Zhao ,  Amir Said ,  Marta Karczewicz ,  Nan Hu ,  Wei-Jung Chien ,  Vijayaraghavan Thirumalai

IPC: H04N19/159 ,  H04N5/926 ,  H04N19/593 ,  H04N1/417 ,  H04N9/808 ,  H04N9/804

CPC classification number: H04N19/159 ,  H04N1/417 ,  H04N5/9262 ,  H04N9/8045 ,  H04N9/8082 ,  H04N19/11 ,  H04N19/157 ,  H04N19/176 ,  H04N19/463 ,  H04N19/593 ,  H04N19/91

Abstract: A device for coding video data is configured to determine that a current block of video data is coded using an intra prediction mode; add an intra prediction mode of a first neighboring block of the current block to a most probable mode candidate list for the current block; add an intra prediction mode for a second neighboring block of the current block to the most probable mode candidate list for the current block; add an intra prediction mode for a third neighboring block of the current block to the most probable mode candidate list for the current block; and code the current block of video data using an intra prediction mode.

公开(公告)号：US09800895B2

公开(公告)日：2017-10-24

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 ,  H04N19/52 ,  H04N19/70

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.

公开(公告)号：US20170026663A1

公开(公告)日：2017-01-26

申请号：US15213966

申请日：2016-07-19

Applicant: QUALCOMM Incorporated

Inventor： Vijayaraghavan Thirumalai ,  Natan Haim Jacobson ,  Rajan Laxman Joshi

IPC: H04N19/60 ,  H04N19/154 ,  H04N19/167 ,  H04N19/176

CPC classification number: H04N19/60 ,  H04N19/122 ,  H04N19/14 ,  H04N19/147 ,  H04N19/154 ,  H04N19/167 ,  H04N19/176

Abstract: Methods and apparatuses for modification to block size for transform mode in display stream compression are disclosed. In one aspect, the method involves selecting a current block and a next block of video data, calculating a first rate-distortion (RD) cost for coding the current and next blocks with a larger block size transform (LBT) mode, and calculating a second RD cost for coding each of the current and next blocks with another coding mode different from the LBT mode. The method may further involve determining whether the first RD cost is less than a sum of the second RD costs for the current and next blocks and coding the current and next blocks with the LBT mode in response to the first RD cost being less than the sum of the second RD costs for the current and next blocks.

Abstract translation: 公开了用于在显示流压缩中对变形模式的块大小进行修改的方法和装置。 一方面，该方法涉及选择视频数据的当前块和下一块，计算用于以较大的块大小变换（LBT）模式对当前块和下一个块进行编码的第一速率失真（RD）成本，并计算 用于使用与LBT模式不同的另一编码模式对每个当前块和下一个块进行编码的第二RD成本。 该方法还可以包括确定第一RD成本是否小于当前块和下一个块的第二RD成本之和，并且响应于第一RD成本小于总和，对具有LBT模式的当前块和下一个块进行编码 的当前和下一个块的第二个RD成本。

公开(公告)号：US20160301950A1

公开(公告)日：2016-10-13

申请号：US15078792

申请日：2016-03-23

Applicant: QUALCOMM Incorporated

Inventor： Natan Haim Jacobson ,  Vijayaraghavan Thirumalai ,  Rajan Laxman Joshi

IPC: H04N19/593 ,  H04N19/174 ,  H04N19/11 ,  H04N19/186 ,  H04N19/159 ,  H04N19/625 ,  H04N19/61 ,  H04N19/423 ,  H04N19/112 ,  H04N19/147 ,  H04N19/124

CPC classification number: H04N19/593 ,  G09G5/006 ,  G09G5/026 ,  G09G2340/02 ,  G09G2340/06 ,  G09G2360/127 ,  H04N19/11 ,  H04N19/112 ,  H04N19/124 ,  H04N19/147 ,  H04N19/15 ,  H04N19/159 ,  H04N19/174 ,  H04N19/186 ,  H04N19/423 ,  H04N19/61 ,  H04N19/625

Abstract: A method and apparatus for coding video information are disclosed. In one example, the method may involve: identifying one or more prediction modes for a fixed-rate codec, each prediction mode having a rate-distortion cost; and selecting, for a current block, a prediction mode that has the lowest rate-distortion cost from among the one more prediction modes not previously selected. The method may involve: (i) determining whether the selected prediction mode would result in overflow or underflow of a buffer of the fixed-rate codec; and (ii) determining whether the selected prediction mode would result in remaining bits in the slice being insufficient to code remaining blocks of the slice. The method may involve utilizing a fallback mode to code the current block in response to each of the selected one or more prediction modes resulting in at least one of conditions (i) and (ii) being true.

Abstract translation: 公开了一种用于编码视频信息的方法和装置。 在一个示例中，该方法可以包括：识别固定速率编解码器的一个或多个预测模式，每个预测模式具有速率失真成本; 并且对于当前块，从未预先选择的多个预测模式中选择具有最低速率失真成本的预测模式。 该方法可以包括：（i）确定所选择的预测模式是否将导致固定速率编解码器的缓冲器的溢出或下溢; 和（ii）确定所选择的预测模式是否会导致切片中的剩余比特不足以对切片的剩余块进行编码。 该方法可以包括利用回退模式来响应于所选择的一个或多个预测模式中的每一个来对当前块进行编码，导致条件（i）和（ii）中的至少一个为真。

公开(公告)号：US20160301933A1

公开(公告)日：2016-10-13

申请号：US15078797

申请日：2016-03-23

Applicant: QUALCOMM Incorporated

Inventor： Natan Haim Jacobson ,  Vijayaraghavan Thirumalai ,  Rajan Laxman Joshi

IPC: H04N19/14 ,  H04N19/176 ,  H04N19/186 ,  H04N19/174

CPC classification number: H04N19/14 ,  H04N19/124 ,  H04N19/174 ,  H04N19/176 ,  H04N19/186 ,  H04N19/61

Abstract: A method and apparatus for detecting a complex region of an image are disclosed. In one example, the method may involve calculating complexity values for a current block, a next block, and a previous block. The method may involve: (i) detecting that the previous complexity value is less than a first threshold value, and that the next complexity value is greater than a second threshold value; and (ii) determining that neither a transition to the current block nor a transition to the previous block is a flat-to-complex region transition. The method may involve detecting a flat-to-complex region transition when transitioning to the next block in response to (i) and (ii).

Abstract translation: 公开了一种用于检测图像的复杂区域的方法和装置。 在一个示例中，该方法可以包括计算当前块，下一个块和先前块的复杂度值。 该方法可以包括：（i）检测先前复杂度值小于第一阈值，并且下一个复杂度值大于第二阈值; 和（ii）确定既不转移到当前块也不转移到先前块是既不是一个平面到复杂的区域转换。 该方法可以涉及当响应于（i）和（ii）转移到下一个块时检测平坦到复杂区域转变。

公开(公告)号：US20160165263A1

公开(公告)日：2016-06-09

申请号：US14906860

申请日：2013-12-24

Applicant: QUALCOMM INCORPORATED

Inventor： Li Zhang ,  Ying Chen ,  Vijayaraghavan Thirumalai ,  Hongbin Liu

IPC: H04N19/597 ,  H04N19/52 ,  H04N19/70 ,  H04N19/96

CPC classification number: H04N19/597 ,  H04N19/52 ,  H04N19/70 ,  H04N19/96

Abstract: A video coder determines a candidate for inclusion in a candidate list for a current prediction unit (PU). The candidate is based on motion parameters of a plurality of sub-PUs of the current PU. If a reference block corresponding to a sub-PU is not coded using motion compensated prediction, the video coder sets the motion parameters of the sub-PU to default motion parameters. For each respective sub-PU from the plurality of sub-PUs, if a reference block for the respective sub-PU is not coded using motion compensated prediction, the motion parameters of the respective sub-PU are not set in response to a subsequent determination that a reference block for any later sub-PU in an order is coded using motion compensated prediction.

Abstract translation: 视频编码器确定用于包括在当前预测单元（PU）的候选列表中的候选。 候选者基于当前PU的多个子PU的运动参数。 如果对应于子PU的参考块不使用运动补偿预测进行编码，则视频编码器将子PU的运动参数设置为默认运动参数。 对于来自多个子PU的各个子PU，如果不使用运动补偿预测对各个子PU的参考块进行编码，则不响应于随后的确定来设置各个子PU的运动参数 使用运动补偿预测编码用于任何后续子PU的参考块。

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。