公开(公告)号：US11985310B2

公开(公告)日：2024-05-14

申请号：US18111581

申请日：2023-02-19

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Minhua Zhou

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

CPC classification number: H04N19/105 ,  H04N19/109 ,  H04N19/167 ,  H04N19/176 ,  H04N19/44 ,  H04N19/463 ,  H04N19/52 ,  H04N19/593 ,  H04N19/96

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：US20240137551A1

公开(公告)日：2024-04-25

申请号：US18399988

申请日：2023-12-29

Applicant: Texas Instruments Incorporated

Inventor： Minhua Zhou

IPC: H04N19/51 ,  H04N19/105 ,  H04N19/109 ,  H04N19/122 ,  H04N19/157 ,  H04N19/159 ,  H04N19/176 ,  H04N19/433 ,  H04N19/52

CPC classification number: H04N19/51 ,  H04N19/105 ,  H04N19/109 ,  H04N19/122 ,  H04N19/157 ,  H04N19/159 ,  H04N19/176 ,  H04N19/433 ,  H04N19/52 ,  H04N19/174

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.

公开(公告)号：US20230379465A1

公开(公告)日：2023-11-23

申请号：US18361294

申请日：2023-07-28

Applicant: Texas Instruments Incorporated

Inventor： Minhua Zhou

IPC: H04N19/119 ,  H04N19/157 ,  H04N19/172

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.

公开(公告)号：US11800109B2

公开(公告)日：2023-10-24

申请号：US17713631

申请日：2022-04-05

Applicant: Texas Instruments Incorporated

Inventor： Minhua Zhou

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

CPC classification number: 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.

公开(公告)号：US20230209045A1

公开(公告)日：2023-06-29

申请号：US18111581

申请日：2023-02-19

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Minhua Zhou

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

CPC classification number: H04N19/105 ,  H04N19/593 ,  H04N19/167 ,  H04N19/463 ,  H04N19/52 ,  H04N19/44 ,  H04N19/96 ,  H04N19/109 ,  H04N19/176

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：US11589060B2

公开(公告)日：2023-02-21

申请号：US17193409

申请日：2021-03-05

Applicant: Texas Instruments Incorporated

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

IPC: H04N19/192 ,  H04N19/119 ,  H04N19/147 ,  H04N19/176 ,  H04N19/51 ,  H04N19/593 ,  H04N19/107 ,  H04N19/169 ,  H04N19/52 ,  H04N19/103

Abstract: A method for coding unit partitioning in a video encoder is provided that includes performing intra-prediction on each permitted coding unit (CU) in a CU hierarchy of a largest coding unit (LCU) to determine an intra-prediction coding cost for each permitted CU, storing the intra-prediction coding cost for each intra-predicted CU in memory, and performing inter-prediction, prediction mode selection, and CU partition selection on each permitted CU in the CU hierarchy to determine a CU partitioning for encoding the LCU, wherein the stored intra-prediction coding costs for the CUs are used.

公开(公告)号：US20220377362A1

公开(公告)日：2022-11-24

申请号：US17880512

申请日：2022-08-03

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：US20220329808A1

公开(公告)日：2022-10-13

申请号：US17713631

申请日：2022-04-05

Applicant: Texas Instruments Incorporated

Inventor： Minhua Zhou

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

公开(公告)号：US11425383B2

公开(公告)日：2022-08-23

申请号：US16799115

申请日：2020-02-24

Applicant: Texas Instruments Incorporated

Inventor： Minhua Zhou

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

公开(公告)号：US20220103837A1

公开(公告)日：2022-03-31

申请号：US17548315

申请日：2021-12-10

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Minhua Zhou

IPC: H04N19/176 ,  H04N19/11 ,  H04N19/593 ,  H04N19/59 ,  H04N19/157

Abstract: A method for processing a prediction unit (PU) to generate predicted samples is provided that includes computing predicted samples for samples of the PU using sample-based angular intra-prediction (SAP) when lossless coding is enabled for the PU, and computing predicted samples for the samples of the PU using block-based angular intra-prediction when lossless coding is not enabled for the PU. Computation of the predicted using SAP includes determining an intra-prediction angle for the PU, and computing a predicted sample for each sample of the samples in the PU based on linear interpolation of two reference samples adjacent to the sample, wherein the two reference samples are selected according to the intra-prediction angle.