公开(公告)号：US20240187607A1

公开(公告)日：2024-06-06

申请号：US18414009

申请日：2024-01-16

Applicant: Texas Instruments Incorporated

Inventor： Minhua Zhou

IPC: 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

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

公开(公告)号：US12003783B2

公开(公告)日：2024-06-04

申请号：US17592981

申请日：2022-02-04

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Madhukar Budagavi ,  Minhua Zhou

IPC: H04N19/82 ,  H04N19/46 ,  H04N19/86

CPC classification number: H04N19/82 ,  H04N19/46 ,  H04N19/86

Abstract: A method for adaptive loop filtering of a reconstructed picture in a video encoder is provided that includes determining whether or not sample adaptive offset (SAO) filtering is applied to the reconstructed picture, and using adaptive loop filtering with no offset for the reconstructed picture when the SAO filtering is determined to be applied to the reconstructed picture.

公开(公告)号：US11924443B2

公开(公告)日：2024-03-05

申请号：US17737103

申请日：2022-05-05

Applicant: Texas Instruments Incorporated

Inventor： Minhua Zhou

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

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

公开(公告)号：US20240048732A1

公开(公告)日：2024-02-08

申请号：US18381709

申请日：2023-10-19

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Minhua Zhou

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

CPC classification number: 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.

公开(公告)号：US20240048707A1

公开(公告)日：2024-02-08

申请号：US18382132

申请日：2023-10-20

Applicant: Texas Instruments Incorporated

Inventor： Minhua Zhou

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

CPC classification number: 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：US11863782B2

公开(公告)日：2024-01-02

申请号：US17213569

申请日：2021-03-26

Applicant: Texas Instruments Incorporated

Inventor： Minhua Zhou

IPC: H04N19/176 ,  H04N19/105 ,  H04N19/433 ,  H04N19/109 ,  H04N19/159 ,  H04N19/157 ,  H04N19/51 ,  H04N19/122 ,  H04N19/52 ,  H04N19/174 ,  H04N19/184

CPC classification number: H04N19/51 ,  H04N19/105 ,  H04N19/109 ,  H04N19/122 ,  H04N19/157 ,  H04N19/159 ,  H04N19/176 ,  H04N19/433 ,  H04N19/52 ,  H04N19/174 ,  H04N19/184

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：US20230336709A1

公开(公告)日：2023-10-19

申请号：US18214017

申请日：2023-06-26

Applicant: Texas Instruments Incorporated

Inventor： Minhua Zhou

IPC: H04N19/00 ,  H04N19/433

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.

公开(公告)号：US11743499B2

公开(公告)日：2023-08-29

申请号：US16781755

申请日：2020-02-04

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

CPC classification number: 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：US11743464B2

公开(公告)日：2023-08-29

申请号：US17191748

申请日：2021-03-04

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Minhua Zhou ,  Mehmet Umut Demircin ,  Madhukar Budagavi

IPC: H04N19/124 ,  H04N19/463 ,  H04N19/176 ,  H04N19/196 ,  H04N19/167 ,  H04N19/60 ,  H04N19/172 ,  H04N19/184 ,  H04N19/117 ,  H04N19/13 ,  H04N19/15 ,  H04N19/159 ,  H04N19/43 ,  H04N19/61

CPC classification number: H04N19/124 ,  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：US20230217035A1

公开(公告)日：2023-07-06

申请号：US18120608

申请日：2023-03-13

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Minhua Zhou

IPC: H04N19/463 ,  H04N19/50 ,  H04N19/109

CPC classification number: H04N19/463 ,  H04N19/50 ,  H04N19/109 ,  H04N19/176

Abstract: Methods are provided for inter-prediction candidate index coding independent of the construction of the corresponding inter-prediction candidate list, i.e., a merging candidate list or an advanced motion vector predictor list. A maximum allowed number of inter-prediction candidates for an inter-prediction candidate list is used for encoding the inter-prediction candidate index in an encoded bit stream. The maximum allowed number may be pre-determined or may be selected by the encoder and encoded in the bit stream. A decoder may then decode the index using the maximum allowed number of inter-prediction candidates independent of the construction of the corresponding inter-prediction candidate list.