公开(公告)号：US09635365B2

公开(公告)日：2017-04-25

申请号：US15145637

申请日：2016-05-03

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Minhua Zhou ,  Mehmet Demircin ,  Madhukar Budagavi

IPC: H04N7/26 ,  H04N19/124 ,  H04N19/176 ,  H04N19/196 ,  H04N19/463 ,  H04N19/167 ,  H04N19/60 ,  H04N19/172 ,  H04N19/184 ,  H04N19/117 ,  H04N19/13 ,  H04N19/15 ,  H04N19/159 ,  H04N19/43 ,  H04N19/61 ,  H04N5/232 ,  H04N5/369

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.

公开(公告)号：US09591312B2

公开(公告)日：2017-03-07

申请号：US13864159

申请日：2013-04-16

Applicant: Texas Instruments Incorporated

Inventor： Minhua Zhou

IPC: H04N19/159 ,  H04N19/176 ,  H04N19/109 ,  H04N19/157 ,  H04N19/433

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。

公开(公告)号：US09503722B2

公开(公告)日：2016-11-22

申请号：US14199558

申请日：2014-03-06

Applicant: Texas Instruments Incorporated

Inventor： Ying Chen ,  Madhukar Budagavi ,  Minhua Zhou

IPC: H04N7/12 ,  H04N19/593 ,  H04N19/13 ,  H04N19/61 ,  H04N19/11 ,  H04N19/146 ,  H04N19/182 ,  H04N19/174 ,  H04N19/423

CPC classification number: H04N19/593 ,  H04N19/11 ,  H04N19/124 ,  H04N19/13 ,  H04N19/146 ,  H04N19/15 ,  H04N19/159 ,  H04N19/174 ,  H04N19/182 ,  H04N19/423 ,  H04N19/43 ,  H04N19/61 ,  H04N19/86

Abstract: A method of compressing digital image data is provided that includes selecting an entropy code for encoding a line of pixels in the digital image data, wherein the entropy code is selected from a plurality of variable length entropy codes, using spatial prediction to compute a pixel predictor and a pixel residual for a pixel in the line of pixels, and selectively encoding the pixel residual using one of the entropy code or run mode encoding.

Abstract translation: 提供了一种压缩数字图像数据的方法，包括选择用于对数字图像数据中的像素行进行编码的熵码，其中使用空间预测从多个可变长度熵码中选择熵码来计算像素预测器 以及像素行中的像素的像素残差，并且使用熵码或运行模式编码之一来选择性地编码像素残差。

公开(公告)号：US20160309195A1

公开(公告)日：2016-10-20

申请号：US15192547

申请日：2016-06-24

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Woo-Shik Kim ,  Do-Kyoung Kwon ,  Minhua Zhou

IPC: H04N19/86 ,  H04N19/91 ,  H04N19/82 ,  H04N19/117 ,  H04N19/186

CPC classification number: H04N19/86 ,  H04N19/117 ,  H04N19/186 ,  H04N19/463 ,  H04N19/70 ,  H04N19/80 ,  H04N19/82 ,  H04N19/91

Abstract: Techniques for signaling of sample adaptive offset (SAO) information that may reduce the coding rate for signaling such information in the compressed bit stream are provided. More specifically, techniques are provided that allow SAO information common to two or more of the color components to be signaled using one or more syntax elements (flags or indicators) representative of the common information. These techniques reduce the need to signal SAO information separately for each color component.

公开(公告)号：US09143789B2

公开(公告)日：2015-09-22

申请号：US14575232

申请日：2014-12-18

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Minhua Zhou ,  Vivienne Sze

IPC: H04N7/12 ,  H04N19/124 ,  H04N19/105 ,  H04N19/61 ,  H04N19/463 ,  H04N19/126 ,  H04N19/85 ,  H04N19/59 ,  H04N19/117 ,  H04N19/176 ,  H04N19/60

CPC classification number: H04N19/124 ,  H04L65/4069 ,  H04L65/607 ,  H04N19/105 ,  H04N19/117 ,  H04N19/126 ,  H04N19/176 ,  H04N19/184 ,  H04N19/463 ,  H04N19/59 ,  H04N19/60 ,  H04N19/61 ,  H04N19/85

Abstract: A method of quantization matrix compression in a video encoder is provided that includes preprocessing a quantization matrix by performing at least one selected from down-sampling the quantization matrix and imposing 135 degree symmetry on the quantization matrix, performing zigzag scanning on the pre-processed quantization matrix to generate a one dimensional (1D) sequence, predicting the 1D sequence to generate a residual 1D sequence, and coding the residual 1D sequence using kth order exp-Golomb coding to generate a compressed quantization matrix, wherein k≧0.

公开(公告)号：US20150222904A1

公开(公告)日：2015-08-06

申请号：US14687639

申请日：2015-04-15

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Minhua Zhou

IPC: H04N19/139 ,  H04N19/13 ,  H04N19/124 ,  H04N19/105 ,  H04N19/577 ,  H04N19/513 ,  H04N19/159

CPC classification number: H04N19/139 ,  H04N19/105 ,  H04N19/124 ,  H04N19/13 ,  H04N19/159 ,  H04N19/52 ,  H04N19/521 ,  H04N19/577 ,  H04N19/61 ,  H04N19/70

Abstract: Methods and apparatus for parsing friendly and error resilient merge flag coding in video coding are provided. In some methods, in contrast to merging candidate list size dependent coding of the merge flag in the prior art, a merge flag is always encoded in the encoded bit stream for each inter-predicted prediction unit (PU) that is not encoded using skip mode. In some methods, in contrast to the prior art that allowed the merging candidate list to be empty, one or more zero motion vector merging candidates formatted according to the prediction type of the slice containing a PU are added to the merging candidate list if needed to ensure that the list is not empty and/or to ensure that the list contains a maximum number of merging candidates.

Abstract translation: 提供了用于在视频编码中解析友好和错误弹性合并标志编码的方法和装置。 在一些方法中，与现有技术中的合并标志的候选列表大小相关编码的合并相反，对于不使用跳过模式编码的每个预测预测单元（PU），总是对编码比特流编码合并标志 。 在一些方法中，与允许合并候选列表为空的现有技术相反，根据包含PU的片段的预测类型格式化的一个或多个零运动矢量合并候选被添加到合并候选列表，如果需要的话 确保列表不为空和/或确保列表中包含最大合并候选人数。

公开(公告)号：US08923407B2

公开(公告)日：2014-12-30

申请号：US14338693

申请日：2014-07-23

Applicant: Texas Instruments Incorporated

Inventor： Vivienne Sze ,  Madhukar Budagavi ,  Woo-Shik Kim ,  Do-Kyoung Kwon ,  Minhua Zhou

IPC: H04N7/12 ,  H04N19/86 ,  H04N19/80 ,  H04N19/91

CPC classification number: H04N19/86 ,  H04N19/117 ,  H04N19/463 ,  H04N19/70 ,  H04N19/80 ,  H04N19/82 ,  H04N19/91

Abstract: A method for sample adaptive offset (SAO) filtering and SAO parameter signaling in a video encoder is provided that includes determining SAO parameters for largest coding units (LCUs) of a reconstructed picture, wherein the SAO parameters include an indicator of an SAO filter type and a plurality of SAO offsets, applying SAO filtering to the reconstructed picture according to the SAO parameters, and entropy encoding LCU specific SAO information for each LCU of the reconstructed picture in an encoded video bit stream, wherein the entropy encoded LCU specific SAO information for the LCUs is interleaved with entropy encoded data for the LCUs in the encoded video bit stream. Determining SAO parameters may include determining the LCU specific SAO information to be entropy encoded for each LCU according to an SAO prediction protocol.

Abstract translation: 提供了一种用于视频编码器中的采样自适应偏移（SAO）滤波和SAO参数信令的方法，其包括确定重构图像的最大编码单元（LCU）的SAO参数，其中SAO参数包括SAO滤波器类型的指示符和 多个SAO偏移量，根据SAO参数对重建图像应用SAO滤波，以及对编码视频比特流中的重构图像的每个LCU进行LCU特定SAO信息的熵编码，其中熵编码的LCU特定SAO信息用于 LCU与编码视频比特流中的LCU的熵编码数据进行交织。 确定SAO参数可以包括根据SAO预测协议确定对于每个LCU进行熵编码的LCU特定SAO信息。

公开(公告)号：US20140334559A1

公开(公告)日：2014-11-13

申请号：US14339105

申请日：2014-07-23

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Woo-Shik Kim ,  Do-Kyoung Kwon ,  Minhua Zhou

IPC: H04N19/86 ,  H04N19/91 ,  H04N19/80 ,  H04N19/70

CPC classification number: H04N19/86 ,  H04N19/117 ,  H04N19/186 ,  H04N19/463 ,  H04N19/70 ,  H04N19/80 ,  H04N19/82 ,  H04N19/91

Abstract: Techniques for signaling of sample adaptive offset (SAO) information that may reduce the coding rate for signaling such information in the compressed bit stream are provided. More specifically, techniques are provided that allow SAO information common to two or more of the color components to be signaled using one or more syntax elements (flags or indicators) representative of the common information. These techniques reduce the need to signal SAO information separately for each color component.

Abstract translation: 提供了可以降低用于在压缩比​​特流中发送信令的编码率的采样自适应偏移（SAO）信息的信令技术。 更具体地，提供了允许使用表示公共信息的一个或多个语法元素（标志或指示符）来向两个或多个颜色分量公共的SAO信息进行信令的技术。 这些技术减少了为每个颜色分量分别发送SAO信息的需要。

公开(公告)号：US20140072030A1

公开(公告)日：2014-03-13

申请号：US14012922

申请日：2013-08-28

Applicant: Texas Instruments Incorporated

Inventor： Minhua Zhou

IPC: H04N7/50

CPC classification number: H04N19/61 ,  H04N19/119 ,  H04N19/124 ,  H04N19/13 ,  H04N19/15 ,  H04N19/157 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/184 ,  H04N19/463 ,  H04N19/625 ,  H04N19/86

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

Abstract translation: 提供了一种用于编码限制片头处理开销的比特流中的视频序列的图像的方法。 该方法包括计算视频序列的最大切片率，基于最大切片率计算图像的最大切片数，并对图像进行编码，其中用于编码图像的片数被强制为不大于 最大片数。

公开(公告)号：US20130094592A1

公开(公告)日：2013-04-18

申请号：US13645324

申请日：2012-10-04

Applicant: Texas Instruments Incorporated

Inventor： Minhua Zhou

IPC: H04N7/26

CPC classification number: H04N19/00 ,  H04N19/433

Abstract: A method is provided that includes determining a target picture virtual memory access (VMA) bandwidth rate, wherein the target picture VMA bandwidth rate indicates a maximum VMA bandwidth rate for motion compensation of a picture, and verifying the target picture VMA bandwidth rate for a compressed video bit stream.

Abstract translation: 提供一种方法，其包括确定目标图像虚拟存储器访问（VMA）带宽速率，其中目标图像VMA带宽速率指示用于图像的运动补偿的最大VMA带宽速率，以及验证压缩的目标图像VMA带宽速率 视频位流。