公开(公告)号：US20190320168A1

公开(公告)日：2019-10-17

申请号：US16452732

申请日：2019-06-26

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Minhua Zhou

IPC: H04N19/105 ,  H04N19/46 ,  H04N19/503 ,  H04N19/196 ,  H04N19/23 ,  H04N19/174 ,  H04N19/159 ,  H04N19/186

Abstract: A method for encoding a picture of a video sequence in a bit stream that reduces slice header parsing overhead is provided. The method includes determining weighting factors that may be used for weighted prediction in encoding at least one slice of the picture, wherein a total number of the weighting factors is constrained to not exceed a predetermined threshold number of weighting factors, wherein the threshold number is less than a maximum possible number of weighting factors, and signaling weighted prediction parameters including the weighting factors in a slice header in the bit stream.

公开(公告)号：US09967591B2

公开(公告)日：2018-05-08

申请号：US15621878

申请日：2017-06-13

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Minhua Zhou ,  Vivienne Sze

IPC: H04N19/00 ,  H04N19/56 ,  H04N19/52

CPC classification number: H04N19/56 ,  H04N19/172 ,  H04N19/176 ,  H04N19/436 ,  H04N19/52 ,  H04N19/96

Abstract: Methods for improved parallel motion estimation are provided that decouple the merging candidate list derivation and motion estimation for merge mode and skip mode and the advanced motion vector predictor (AMVP) candidate list construction from regular motion estimation to increase the coding quality in parallel motion estimation while meeting throughput requirements. This decoupling may be accomplished by modifying the availability rules for spatial motion data (SMD) positions for construction of the candidate lists. As part of the decoupling, largest coding units (LCUs) of a picture may be divided into non-overlapping parallel motion estimation regions (PMER) of equal size. Within a PMER, motion estimation for merge mode, skip mode, and normal inter-prediction mode may be performed in parallel for all the prediction units (PUs) in the PMER.

公开(公告)号：US20170289570A1

公开(公告)日：2017-10-05

申请号：US15621878

申请日：2017-06-13

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Minhua Zhou ,  Vivienne Sze

IPC: H04N19/56 ,  H04N19/52

CPC classification number: H04N19/56 ,  H04N19/172 ,  H04N19/176 ,  H04N19/436 ,  H04N19/52 ,  H04N19/96

Abstract: Methods for improved parallel motion estimation are provided that decouple the merging candidate list derivation and motion estimation for merge mode and skip mode and the advanced motion vector predictor (AMVP) candidate list construction from regular motion estimation to increase the coding quality in parallel motion estimation while meeting throughput requirements. This decoupling may be accomplished by modifying the availability rules for spatial motion data (SMD) positions for construction of the candidate lists. As part of the decoupling, largest coding units (LCUs) of a picture may be divided into non-overlapping parallel motion estimation regions (PMER) of equal size. Within a PMER, motion estimation for merge mode, skip mode, and normal inter-prediction mode may be performed in parallel for all the prediction units (PUs) in the PMER.

公开(公告)号：US09762930B2

公开(公告)日：2017-09-12

申请号：US14987570

申请日：2016-01-04

Applicant: Texas Instruments Incorporated

Inventor： Mangesh Devidas Sadafale ,  Minhua Zhou

IPC: H04N19/117 ,  H04N19/86 ,  H04N19/176 ,  H04N19/157 ,  H04N19/436

CPC classification number: H04N19/86 ,  H04N19/117 ,  H04N19/157 ,  H04N19/176 ,  H04N19/436

Abstract: Deblocking filtering is provided in which an 8×8 filtering block covering eight sample vertical and horizontal boundary segments is divided into filtering sub-blocks that can be independently processed. To process the vertical boundary segment, the filtering block is divided into top and bottom 8×4 filtering sub-blocks, each covering a respective top and bottom half of the vertical boundary segment. To process the horizontal boundary segment, the filtering block is divided into left and right 4×8 filtering sub-blocks, each covering a respective left and right half of the horizontal boundary segment. The computation of the deviation d for a boundary segment in a filtering sub-block is performed using only samples from rows or columns in the filtering sub-block. Consequently, the filter on/off decisions and the weak/strong filtering decisions of the deblocking filtering are performed using samples contained within individual filtering blocks, thus allowing full parallel processing of the filtering blocks.

公开(公告)号：US20170127084A1

公开(公告)日：2017-05-04

申请号：US15405142

申请日：2017-01-12

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Minhua Zhou ,  Vivienne Sze

IPC: H04N19/56 ,  H04N19/436 ,  H04N19/172

CPC classification number: H04N19/56 ,  H04N19/172 ,  H04N19/176 ,  H04N19/436 ,  H04N19/52 ,  H04N19/96

Abstract: Methods for improved parallel motion estimation are provided that decouple the merging candidate list derivation and motion estimation for merge mode and skip mode and the advanced motion vector predictor (AMVP) candidate list construction from regular motion estimation to increase the coding quality in parallel motion estimation while meeting throughput requirements. This decoupling may be accomplished by modifying the availability rules for spatial motion data (SMD) positions for construction of the candidate lists. As part of the decoupling, largest coding units (LCUs) of a picture may be divided into non-overlapping parallel motion estimation regions (PMER) of equal size. Within a PMER, motion estimation for merge mode, skip mode, and normal inter-prediction mode may be performed in parallel for all the prediction units (PUs) in the PMER.

公开(公告)号：US09549200B1

公开(公告)日：2017-01-17

申请号：US15339150

申请日：2016-10-31

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Minhua Zhou ,  Vivienne Sze

IPC: H04N19/00 ,  H04N19/56 ,  H04N19/52

CPC classification number: H04N19/56 ,  H04N19/172 ,  H04N19/176 ,  H04N19/436 ,  H04N19/52 ,  H04N19/96

Abstract: Methods for improved parallel motion estimation are provided that decouple the merging candidate list derivation and motion estimation for merge mode and skip mode and the advanced motion vector predictor (AMVP) candidate list construction from regular motion estimation to increase the coding quality in parallel motion estimation while meeting throughput requirements. This decoupling may be accomplished by modifying the availability rules for spatial motion data (SMD) positions for construction of the candidate lists. As part of the decoupling, largest coding units (LCUs) of a picture may be divided into non-overlapping parallel motion estimation regions (PMER) of equal size. Within a PMER, motion estimation for merge mode, skip mode, and normal inter-prediction mode may be performed in parallel for all the prediction units (PUs) in the PMER.

Abstract translation: 提供了一种用于改进的并行运动估计的方法，其从合并模式和跳过模式以及高级运动矢量预测器（AMVP）候选列表构造的合并候选列表导出和运动估计与常规运动估计分离，以增加并行运动估计中的编码质量， 满足吞吐量要求。 该解耦可以通过修改用于构建候选列表的空间运动数据（SMD）位置的可用性规则来实现。 作为解耦的一部分，图像的最大编码单元（LCU）可以被划分成相同大小的非重叠并行运动估计区域（PMER）。 在PMER中，可以对PMER中的所有预测单元（PU）并行执行合并模式，跳过模式和正常帧间预测模式的运动估计。

公开(公告)号：US20150237370A1

公开(公告)日：2015-08-20

申请号：US14689807

申请日：2015-04-17

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Minhua Zhou ,  Vivienne Sze

IPC: H04N19/56 ,  H04N19/172 ,  H04N19/176 ,  H04N19/52 ,  H04N19/96

CPC classification number: H04N19/56 ,  H04N19/172 ,  H04N19/176 ,  H04N19/436 ,  H04N19/52 ,  H04N19/96

Abstract: Methods for improved parallel motion estimation are provided that decouple the merging candidate list derivation and motion estimation for merge mode and skip mode and the advanced motion vector predictor (AMVP) candidate list construction from regular motion estimation to increase the coding quality in parallel motion estimation while meeting throughput requirements. This decoupling may be accomplished by modifying the availability rules for spatial motion data (SMD) positions for construction of the candidate lists. As part of the decoupling, largest coding units (LCUs) of a picture may be divided into non-overlapping parallel motion estimation regions (PMER) of equal size. Within a PMER, motion estimation for merge mode, skip mode, and normal inter-prediction mode may be performed in parallel for all the prediction units (PUs) in the PMER.

Abstract translation: 提供了一种用于改进的并行运动估计的方法，其从合并模式和跳过模式以及高级运动矢量预测器（AMVP）候选列表构造的合并候选列表导出和运动估计与常规运动估计分离，以增加并行运动估计中的编码质量， 满足吞吐量要求。 该解耦可以通过修改用于构建候选列表的空间运动数据（SMD）位置的可用性规则来实现。 作为解耦的一部分，图像的最大编码单元（LCU）可以被划分成相同大小的非重叠并行运动估计区域（PMER）。 在PMER中，可以对PMER中的所有预测单元（PU）并行执行合并模式，跳过模式和正常帧间预测模式的运动估计。

公开(公告)号：US20150049805A1

公开(公告)日：2015-02-19

申请号：US14531632

申请日：2014-11-03

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Minhua Zhou ,  Mehmet Demircin ,  Madhukar Budagavi

IPC: H04N19/196 ,  H04N19/60 ,  H04N19/167 ,  H04N19/124 ,  H04N19/176

CPC classification number: H04N19/124 ,  H04N5/23293 ,  H04N5/369 ,  H04N19/117 ,  H04N19/13 ,  H04N19/15 ,  H04N19/159 ,  H04N19/167 ,  H04N19/172 ,  H04N19/176 ,  H04N19/184 ,  H04N19/196 ,  H04N19/43 ,  H04N19/463 ,  H04N19/60 ,  H04N19/61

Abstract: A method is provided that includes receiving a coded largest coding unit in a video decoder, wherein the coded largest coding unit includes a coded coding unit structure and a plurality of coded quantization parameters, and decoding the coded largest coding unit based on the coded coding unit structure and the plurality of coded quantization parameters.

Abstract translation: 提供了一种方法，包括在视频解码器中接收编码最大编码单元，其中编码最大编码单元包括编码编码单元结构和多个编码量化参数，并且基于编码编码单元解码编码最大编码单元 结构和多个编码量化参数。

公开(公告)号：US20140086330A1

公开(公告)日：2014-03-27

申请号：US14013296

申请日：2013-08-29

Applicant: Texas Instruments Incorporated

Inventor： Minhua Zhou

IPC: H04N7/26

CPC classification number: H04N19/119 ,  H04N19/157 ,  H04N19/172

Abstract: A method for encoding a picture of a video sequence in a bit stream that constrains tile processing overhead is provided. The method includes computing a maximum tile rate for the video sequence, computing a maximum number of tiles for the picture based on the maximum tile rate, and encoding the picture wherein a number of tiles used to encode the picture is enforced to be no more than the maximum number of tiles.

Abstract translation: 提供了一种用于对限制瓦片处理开销的比特流中的视频序列的图像进行编码的方法。 该方法包括计算视频序列的最大瓦片速率，基于最大瓦片速率计算图像的最大瓦片数，以及编码图像，其中用于编码图像的多个瓦片被强制为不大于 最大数量的瓷砖。

公开(公告)号：US20130272415A1

公开(公告)日：2013-10-17

申请号：US13864159

申请日：2013-04-16

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Minhua Zhou

IPC: H04N7/36

CPC classification number: H04N19/51 ,  H04N19/105 ,  H04N19/109 ,  H04N19/122 ,  H04N19/157 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/184 ,  H04N19/433

Abstract: Motion compensation requires a significant amount of memory bandwidth, especially for smaller prediction unit sizes. The worst case bandwidth requirements can occur when bi-predicted 4×8 or 8×4 PUs are used. To reduce the memory bandwidth requirements for such smaller PUs, methods are provided for restricting inter-coded PUs of small block sizes to be coded only in a uni-predictive mode, i.e., forward prediction or backward prediction. More specifically, PUs of specified restricted sizes in bi-predicted slices (B slices) are forced to be uni-predicted.

Abstract translation: 运动补偿需要大量的内存带宽，特别是对于较小的预测单元大小。 当使用双预测的4×8或8×4 PU时，可能会发生最差的带宽需求。 为了减少这种较小的PU的存储器带宽要求，提供了用于限制仅以单一预测模式即前向预测或后向预测编码的小块大小的帧间编码的PU的方法。 更具体地，强制在双预测切片（B切片）中指定的限制尺寸的PU被单独预测。