公开(公告)号：US11025941B2

公开(公告)日：2021-06-01

申请号：US16839284

申请日：2020-04-03

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Minhua Zhou

IPC: H04N19/00 ,  H04N19/463 ,  H04N19/50 ,  H04N19/109 ,  H04N19/176 ,  H04N19/625

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.

公开(公告)号：US10999601B2

公开(公告)日：2021-05-04

申请号：US16434832

申请日：2019-06-07

Applicant: Texas Instruments Incorporated

Inventor： Ying Chen ,  Madhukar Budagavi ,  Minhua Zhou

IPC: H04N7/12 ,  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：US10992932B2

公开(公告)日：2021-04-27

申请号：US16452732

申请日：2019-06-26

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Minhua Zhou

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

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：US20210006811A1

公开(公告)日：2021-01-07

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：US10721487B2

公开(公告)日：2020-07-21

申请号：US16437098

申请日：2019-06-11

Applicant: Texas Instruments Incorporated

Inventor： Minhua Zhou

IPC: H04N19/51 ,  H04N19/176 ,  H04N19/105 ,  H04N19/433 ,  H04N19/109 ,  H04N19/159 ,  H04N19/122 ,  H04N19/157 ,  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：US10708622B2

公开(公告)日：2020-07-07

申请号：US13720995

申请日：2012-12-19

Applicant: Texas Instruments Incorporated

Inventor： Madhukar Budagavi ,  Minhua Zhou

IPC: 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：US10609366B2

公开(公告)日：2020-03-31

申请号：US15700634

申请日：2017-09-11

Applicant: Texas Instruments Incorporated

Inventor： Minhua Zhou

IPC: 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：US10362326B2

公开(公告)日：2019-07-23

申请号：US15451085

申请日：2017-03-06

Applicant: Texas Instruments Incorporated

Inventor： Minhua Zhou

IPC: H04N19/51 ,  H04N19/159 ,  H04N19/176 ,  H04N19/109 ,  H04N19/157 ,  H04N19/433 ,  H04N19/105 ,  H04N19/122 ,  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：US20190174141A1

公开(公告)日：2019-06-06

申请号：US16260225

申请日：2019-01-29

Applicant: Texas Instruments Incorporated

Inventor： Minhua Zhou

IPC: H04N19/436

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：US10264275B2

公开(公告)日：2019-04-16

申请号：US15864952

申请日：2018-01-08

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Minhua Zhou

IPC: H04N19/463 ,  H04N19/50 ,  H04N19/109 ,  H04N19/176 ,  H04N19/625

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.