公开(公告)号：US12170784B2

公开(公告)日：2024-12-17

申请号：US18111579

申请日：2023-02-19

Applicant: Texas Instruments Incorporated

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

IPC: H04N19/192 ,  H04N19/107 ,  H04N19/119 ,  H04N19/147 ,  H04N19/169 ,  H04N19/176 ,  H04N19/51 ,  H04N19/52 ,  H04N19/593 ,  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：US20240291966A1

公开(公告)日：2024-08-29

申请号：US18656049

申请日：2024-05-06

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：US12003784B2

公开(公告)日：2024-06-04

申请号：US17074308

申请日：2020-10-19

Applicant: Texas Instruments Incorporated

Inventor： Mangesh Devidas Sadafale ,  Minhua Zhou

IPC: H04N19/86 ,  H04N19/117 ,  H04N19/157 ,  H04N19/176 ,  H04N19/436

CPC classification number: H04N19/86 ,  H04N19/117 ,  H04N19/157 ,  H04N19/176 ,  H04N19/436

Abstract: Deblocking filtering is provided in which an 8×8 filtering block covering eight sample vertical and horizontal boundary segments is divided into filtering sub-blocks that can be independently processed. To process the vertical boundary segment, the filtering block is divided into top and bottom 8×4 filtering sub-blocks, each covering a respective top and bottom half of the vertical boundary segment. To process the horizontal boundary segment, the filtering block is divided into left and right 4×8 filtering sub-blocks, each covering a respective left and right half of the horizontal boundary segment. The computation of the deviation d for a boundary segment in a filtering sub-block is performed using only samples from rows or columns in the filtering sub-block. Consequently, the filter on/off decisions and the weak/strong filtering decisions of the deblocking filtering are performed using samples contained within individual filtering blocks, thus allowing full parallel processing of the filtering blocks.

公开(公告)号：US11985353B2

公开(公告)日：2024-05-14

申请号：US17824460

申请日：2022-05-25

Applicant: Texas Instruments Incorporated

Inventor： Minhua Zhou

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

CPC classification number: H04N19/61 ,  H04N19/119 ,  H04N19/157 ,  H04N19/176

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：US20240080459A1

公开(公告)日：2024-03-07

申请号：US18507223

申请日：2023-11-13

Applicant: Texas Instruments Incorporated

Inventor： Woo-Shik Kim ,  Madhukar Budagavi ,  Minhua Zhou

IPC: H04N19/167 ,  H04N19/117 ,  H04N19/14 ,  H04N19/174 ,  H04N19/176 ,  H04N19/61 ,  H04N19/82 ,  H04N19/86

CPC classification number: H04N19/167 ,  H04N19/117 ,  H04N19/14 ,  H04N19/174 ,  H04N19/176 ,  H04N19/61 ,  H04N19/82 ,  H04N19/86

Abstract: A method for sample adaptive offset (SAO) filtering in a video encoder is provided that includes estimating SAO parameters for color components of a largest coding unit (LCU) of a picture, wherein estimating SAO parameters includes using at least some non-deblock-filtered reconstructed pixels of the LCU to estimate the SAO parameters, performing SAO filtering on the reconstructed LCU according to the estimated SAO parameters, and entropy encoding SAO information for the LCU in a compressed video bit stream, wherein the SAO information signals the estimated SAO parameters for the LCU.

公开(公告)号：US20230421808A1

公开(公告)日：2023-12-28

申请号：US18464433

申请日：2023-09-11

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Ying Chen ,  Madhukar Budagavi ,  Minhua Zhou

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

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

公开(公告)号：US20230421789A1

公开(公告)日：2023-12-28

申请号：US18242241

申请日：2023-09-05

Applicant: Texas Instruments Incorporated

Inventor： Minhua Zhou

IPC: H04N19/436 ,  H04N19/513

CPC classification number: H04N19/436 ,  H04N19/521

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：US20230396806A1

公开(公告)日：2023-12-07

申请号：US18234510

申请日：2023-08-16

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

CPC classification number: H04N19/61 ,  H04N19/119 ,  H04N19/172 ,  H04N19/157 ,  H04N19/124 ,  H04N19/13 ,  H04N19/15 ,  H04N19/625 ,  H04N19/86 ,  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：US11818365B2

公开(公告)日：2023-11-14

申请号：US17527200

申请日：2021-11-16

Applicant: Texas Instruments Incorporated

Inventor： Woo-Shik Kim ,  Madhukar Budagavi ,  Minhua Zhou

IPC: H04N19/167 ,  H04N19/176 ,  H04N19/117 ,  H04N19/14 ,  H04N19/61 ,  H04N19/82 ,  H04N19/174 ,  H04N19/86

CPC classification number: H04N19/167 ,  H04N19/117 ,  H04N19/14 ,  H04N19/174 ,  H04N19/176 ,  H04N19/61 ,  H04N19/82 ,  H04N19/86

Abstract: A method for sample adaptive offset (SAO) filtering in a video encoder is provided that includes estimating SAO parameters for color components of a largest coding unit (LCU) of a picture, wherein estimating SAO parameters includes using at least some non-deblock-filtered reconstructed pixels of the LCU to estimate the SAO parameters, performing SAO filtering on the reconstructed LCU according to the estimated SAO parameters, and entropy encoding SAO information for the LCU in a compressed video bit stream, wherein the SAO information signals the estimated SAO parameters for the LCU.

公开(公告)号：US11812041B2

公开(公告)日：2023-11-07

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

CPC classification number: H04N19/192 ,  H04N19/107 ,  H04N19/119 ,  H04N19/147 ,  H04N19/176 ,  H04N19/1883 ,  H04N19/51 ,  H04N19/52 ,  H04N19/593 ,  H04N19/103

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.