公开(公告)号：US11490105B2

公开(公告)日：2022-11-01

申请号：US17018251

申请日：2020-09-11

Applicant: Texas Instruments Incorporated

Inventor： Veeramanikandan Raju ,  Wei Hong ,  Minhua Zhou

IPC: H04N19/46 ,  H04N19/70 ,  H04N19/597 ,  H04N13/128

Abstract: From a bit stream, at least the following are decoded: a stereoscopic image of first and second views; a maximum positive disparity between the first and second views; and a minimum negative disparity between the first and second views. In response to the maximum positive disparity violating a limit on positive disparity, a convergence plane of the stereoscopic image is adjusted to comply with the limit on positive disparity. In response to the minimum negative disparity violating a limit on negative disparity, the convergence plane is adjusted to comply with the limit on negative disparity.

公开(公告)号：US20220295100A1

公开(公告)日：2022-09-15

申请号：US17824460

申请日：2022-05-25

Applicant: Texas Instruments Incorporated

Inventor： Minhua Zhou

IPC: H04N19/61 ,  H04N19/176 ,  H04N19/119 ,  H04N19/157

Abstract: A method and apparatus for a low complexity transform unit partitioning structure for High Efficiency Video Coding (HEVC). The method includes determining prediction unit size of a coding unit, and setting the size of transform unit size of Y, U and V according to the prediction unit size of the coding unit.

公开(公告)号：US20220286698A1

公开(公告)日：2022-09-08

申请号：US17748619

申请日：2022-05-19

Applicant: Texas Instruments Incorporated

Inventor： Minhua Zhou

IPC: H04N19/436 ,  H04N19/513

Abstract: A method for decoding a compressed video bit stream in a video decoder to recover a video sequence, the video decoder including a plurality of decoder processing cores is provided. The method includes determining that a picture is encoded in the compressed bit stream as a pre-determined number of independently encoded sub-pictures, and dispatching a first encoded sub-picture of the pre-determined number of sub-pictures to a first decoder processing core of the plurality of decoder processing cores and a second encoded sub-picture of the pre-determined number of sub-pictures to a second decoder processing core of the plurality of decoder processing cores, wherein the first encoded sub-picture and the second encoded sub-picture are independently decoded in parallel on the respective first and second decoder processing cores.

公开(公告)号：US20220272328A1

公开(公告)日：2022-08-25

申请号：US17743812

申请日：2022-05-13

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Minhua Zhou

IPC: H04N19/105 ,  H04N19/52 ,  H04N19/96 ,  H04N19/109 ,  H04N19/463 ,  H04N19/167 ,  H04N19/176 ,  H04N19/44 ,  H04N19/593

Abstract: A method for derivation of a temporal motion data (TMD) candidate for a prediction unit (PU) in video encoding or video decoding is provided. The derived TMD candidate is for inclusion in an inter-prediction candidate list for the PU. The method includes determining a primary TMD position relative to a co-located PU in a co-located largest coding unit (LCU), wherein the co-located PU is a block in a reference picture having a same size, shape, and coordinates as the PU, and selecting at least some motion data of a secondary TMD position as the TMD candidate when the primary TMD position is in a bottom neighboring LCU or in a bottom right neighboring LCU of the co-located LCU, wherein the secondary TMD position is determined relative to the co-located PU.

公开(公告)号：US20220264116A1

公开(公告)日：2022-08-18

申请号：US17737103

申请日：2022-05-05

Applicant: Texas Instruments Incorporated

Inventor： Minhua Zhou

IPC: H04N19/167 ,  H04N19/70 ,  H04N19/61 ,  H04N19/82 ,  H04N19/103 ,  H04N19/172 ,  H04N19/117 ,  H04N19/174 ,  H04N19/176

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.

公开(公告)号：US20220116604A1

公开(公告)日：2022-04-14

申请号：US17560703

申请日：2021-12-23

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Hyung Joon Kim ,  Minhua Zhou ,  Akira Osamoto ,  Hideo Tamama

IPC: H04N19/119 ,  H04N19/107 ,  H04N19/147 ,  H04N19/169 ,  H04N19/52

Abstract: A method for motion estimation is provided that includes determining a first motion vector for a first child coding unit (CU) of a parent CU and a second motion vector for a second child CU of the parent CU, wherein the first child CU, the second child CU, and the parent CU are in a CU hierarchy, wherein the first and second child CUs are smallest size CUs in the CU hierarchy, and wherein a first motion search type is used to determine the first motion vector and the second motion vector, selecting the first and second motion vectors as candidate predictors for the parent CU, selecting a predictor for a prediction unit (PU) of the first parent CU from the candidate predictors, and refining the predictor using a second motion search type to determine a motion vector for the PU.

公开(公告)号：USRE49019E1

公开(公告)日：2022-04-05

申请号：US16742738

申请日：2020-01-14

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Minhua Zhou ,  Vivienne Sze

IPC: H04N7/12 ,  H04N19/124 ,  H04N19/105 ,  H04N19/117 ,  H04N19/126 ,  H04N19/176 ,  H04N19/184 ,  H04N19/463 ,  H04N19/59 ,  H04N19/60 ,  H04N19/61 ,  H04N19/85 ,  H04L65/61 ,  H04L65/60

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：US11277639B2

公开(公告)日：2022-03-15

申请号：US17386592

申请日：2021-07-28

Applicant: Texas Instruments Incorporated

Inventor： Minhua Zhou

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

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：US20210360287A1

公开(公告)日：2021-11-18

申请号：US17386592

申请日：2021-07-28

Applicant: Texas Instruments Incorporated

Inventor： Minhua Zhou

IPC: H04N19/61 ,  H04N19/119 ,  H04N19/172 ,  H04N19/157 ,  H04N19/124 ,  H04N19/13 ,  H04N19/15 ,  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.

公开(公告)号：US11076163B2

公开(公告)日：2021-07-27

申请号：US17120846

申请日：2020-12-14

Applicant: Texas Instruments Incorporated

Inventor： Minhua Zhou

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

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.