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。

公开(公告)号：US20130077696A1

公开(公告)日：2013-03-28

申请号：US13623087

申请日：2012-09-19

Applicant: Texas Instruments Incorporated

Inventor： Minhua Zhou

IPC: H04N7/26

CPC classification number: H04N19/167 ,  H04N19/103 ,  H04N19/117 ,  H04N19/12 ,  H04N19/124 ,  H04N19/157 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/436 ,  H04N19/61 ,  H04N19/70 ,  H04N19/82

Abstract: A method for coding a video sequence is provided that includes encoding a portion of a picture in the video sequence in lossless coding mode, and signaling a lossless coding indicator in a compressed bit stream, wherein the lossless coding indicator corresponds to the portion of a picture and indicates whether or not the portion of the picture is losslessly coded. A method for decoding a compressed video bit stream is provided that includes determining that lossless coding mode is enabled, decoding a lossless coding indicator from the compressed video bit stream, wherein the lossless coding indicator corresponds to a portion of a picture in the compressed video bit stream and indicates whether or not the portion of the picture is losslessly coded, and decoding the portion of the picture in lossless coding mode when the lossless coding indicator indicates the portion of the picture is losslessly coded.

Abstract translation: 提供一种用于对视频序列进行编码的方法，其包括以无损编码模式对视频序列中的图像的一部分进行编码，以及在压缩比特流中发送无损编码指示符，其中无损编码指示符对应于图像的部分 并指示图像的部分是否被无损编码。 提供一种用于对压缩视频比特流进行解码的方法，包括确定启用了无损编码模式，从压缩视频比特流解码无损编码指示符，其中无损编码指示符对应于压缩视频比特中的图像的一部分 并且指示图像的部分是否被无损编码，并且当无损编码指示符指示图像的部分被无损编码时，以无损编码模式对图像的该部分进行解码。

公开(公告)号：US12301873B2

公开(公告)日：2025-05-13

申请号：US18234510

申请日：2023-08-16

Applicant: Texas Instruments Incorporated

Inventor： Minhua Zhou

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

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.

公开(公告)号：US20250150581A1

公开(公告)日：2025-05-08

申请号：US19018721

申请日：2025-01-13

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Minhua Zhou

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

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：US20250142072A1

公开(公告)日：2025-05-01

申请号：US19010695

申请日：2025-01-06

Applicant: Texas Instruments Incorporated

Inventor： Minhua Zhou

IPC: H04N19/129 ,  H04N19/119 ,  H04N19/174 ,  H04N19/433 ,  H04N19/436

Abstract: A method and apparatus for sub-picture based raster scanning coding order. The method includes dividing an image into even sub-pictures, and encoding parallel sub-pictures on multi-cores in raster scanning order within sub-pictures, wherein from core to core, coding of the sub-picture is independent around sub-picture boundaries, and wherein within a core, coding of a sub-picture is at least one of dependent or independent around sub-picture boundaries.