公开(公告)号：US20240114175A1

公开(公告)日：2024-04-04

申请号：US18541568

申请日：2023-12-15

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Woo-Shik Kim ,  Do-Kyoung Kwon ,  Minhua Zhou

IPC: H04N19/86 ,  H04N19/117 ,  H04N19/186 ,  H04N19/463 ,  H04N19/70 ,  H04N19/80 ,  H04N19/82 ,  H04N19/91

CPC classification number: H04N19/86 ,  H04N19/117 ,  H04N19/186 ,  H04N19/463 ,  H04N19/70 ,  H04N19/80 ,  H04N19/82 ,  H04N19/91

Abstract: Techniques for signaling of sample adaptive offset (SAO) information that may reduce the coding rate for signaling such information in the compressed bit stream are provided. More specifically, techniques are provided that allow SAO information common to two or more of the color components to be signaled using one or more syntax elements (flags or indicators) representative of the common information. These techniques reduce the need to signal SAO information separately for each color component.

公开(公告)号：US11910006B2

公开(公告)日：2024-02-20

申请号：US17380403

申请日：2021-07-20

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Do-Kyoung Kwon ,  Madhukar Budagavi

IPC: H04N19/567

CPC classification number: H04N19/567

Abstract: A method for encoding video data is provided that includes determining whether or not a parent coding unit of a coding unit of the video data was predicted in intra-prediction block copy (IntraBC) mode and, when it is determined that the parent coding unit was not predicted in IntraBC mode: computing activity of the coding unit, determining an IntraBC coding cost of the coding unit by computing the IntraBC coding cost of the coding unit using a two dimensional (2D) search when the activity of the coding unit is not than an activity threshold, and computing the IntraBC coding cost of the coding unit using a one dimensional (1D) search when the activity of the coding unit is less than the activity threshold, using the IntraBC coding cost to select an encoding mode from one of a plurality of encoding modes, encoding the coding unit using the selected encoding mode.

公开(公告)号：US20230345010A1

公开(公告)日：2023-10-26

申请号：US18216702

申请日：2023-06-30

Applicant: Texas Instruments Incorporated

Inventor： Do-Kyoung Kwon ,  Madhukar Budagavi ,  Ming-Jun Chen

IPC: H04N19/154 ,  H04N19/597 ,  H04N19/176 ,  H04N19/124 ,  H04N19/142

CPC classification number: H04N19/154 ,  H04N19/597 ,  H04N19/176 ,  H04N19/124 ,  H04N19/142 ,  H04N2013/0081

Abstract: A method for encoding a multi-view frame in a video encoder is provided that includes computing a depth quality sensitivity measure for a multi-view coding block in the multi-view frame, computing a depth-based perceptual quantization scale for a 2D coding block of the multi-view coding block, wherein the depth-based perceptual quantization scale is based on the depth quality sensitive measure and a base quantization scale for the 2D frame including the 2D coding block, and encoding the 2D coding block using the depth-based perceptual quantization scale.

公开(公告)号：US11743476B2

公开(公告)日：2023-08-29

申请号：US17520960

申请日：2021-11-08

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Do-Kyoung Kwon ,  Madhukar Budagavi

IPC: H04N19/31 ,  H04N19/46 ,  H04N19/423 ,  H04N19/573 ,  H04N19/577 ,  H04N19/105 ,  H04N19/172 ,  H04N19/156 ,  H04N19/187 ,  H04N19/44 ,  H04N19/33

CPC classification number: H04N19/31 ,  H04N19/423 ,  H04N19/46 ,  H04N19/573 ,  H04N19/577 ,  H04N19/105 ,  H04N19/156 ,  H04N19/172 ,  H04N19/187 ,  H04N19/33 ,  H04N19/44

Abstract: In examples, a method comprises receiving, by a decoder, a scalable bitstream including a plurality of layers of bitstreams The method comprises determining, by the decoder, a target layer of the plurality of layers of bitstreams to be decoded. The method also comprises demultiplexing, by the decoder, the plurality of layers of bitstreams from the scalable bitstream. The method further includes decoding, by the decoder, each of the plurality of layers of bitstreams that is at or below the target layer and associated with the target layer. The method also comprises outputting, by the decoder, a video based on each of the plurality of layers of bitstreams that is at or below the target layer and associated with the target layer.

公开(公告)号：US20230085594A1

公开(公告)日：2023-03-16

申请号：US17988817

申请日：2022-11-17

Applicant: Texas Instruments Incorporated

Inventor： Do-Kyoung Kwon ,  Madhukar Budagavi

IPC: H04N19/503 ,  H04N19/107 ,  H04N19/593 ,  H04N19/43 ,  H04N19/109

Abstract: A method for decoding encoded blocks of pixels from an encoded video bit stream is provided that includes decoding a block vector corresponding to an encoded block of pixels from the encoded bit stream, verifying that the block vector indicates a block of reconstructed pixels in a search area including reconstructed pixels of a largest coding unit (LCU) including the encoded block of pixels and N left neighboring reconstructed LCUs of the LCU, and decoding the encoded block of pixels, wherein the block of reconstructed pixels is used as a predictor for the encoded block of pixels.

公开(公告)号：US20220400269A1

公开(公告)日：2022-12-15

申请号：US17890553

申请日：2022-08-18

Applicant: Texas Instruments Incorporated

Inventor： Do-Kyoung Kwon ,  Madhukar Budagavi

IPC: H04N19/20 ,  H04N19/157 ,  H04N19/176 ,  H04N19/86 ,  H04N19/14 ,  H04N19/126

Abstract: A method for encoding a video sequence in a video encoder is provided that includes adapting a quantization parameter of a block of pixels in a picture of the video sequence based on a transform block size of the block of pixels to determine a final quantization parameter, and quantizing transform coefficients of the block of pixels using the final quantization parameter.

公开(公告)号：US20220094933A1

公开(公告)日：2022-03-24

申请号：US17539945

申请日：2021-12-01

Applicant: Texas Instruments Incorporated

Inventor： Do-Kyoung Kwon ,  Jing-Fei Ren ,  Darnell Moore

IPC: H04N19/124 ,  H04N13/161 ,  H04N19/137 ,  H04N19/182 ,  G06T7/593

Abstract: This disclosure describes techniques for performing semi-global matching (SGM) path cost compression. In some examples, the techniques may perform disparity-dependent sub-sampling of a set of SGM path costs where the sub-sampling ratio is determined based on a candidate disparity level. The sub-sampled SGM path costs may be stored in a memory. When retrieved from memory, the sub-sampled SGM path costs may be interpolated to reconstruct the other path costs not stored in the memory. The reconstructed path costs may be used for further SGM processing. In further examples, the techniques may perform disparity-dependent quantization on the SGM path costs or the sub-sampled SGM path costs, and store the quantized SGM path costs in memory. The techniques of this disclosure may reduce bandwidth as well as reduce the memory footprint needed to implement an SGM algorithm.

公开(公告)号：US20220060725A1

公开(公告)日：2022-02-24

申请号：US17520960

申请日：2021-11-08

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Do-Kyoung Kwon ,  Madhukar Budagavi

IPC: H04N19/31 ,  H04N19/46 ,  H04N19/423 ,  H04N19/573 ,  H04N19/577

Abstract: A method for encoding a video sequence in a scalable video encoder to generate a scalable bitstream is provided that includes encoding the video sequence in a first layer encoder of the scalable video encoder to generate a first sub-bitstream, encoding the video sequence in a second layer encoder of the scalable video encoder to generate a second sub-bitstream, wherein portions of the video sequence being encoded in the second layer encoder are predicted using reference portions of the video sequence encoded in the first layer encoder, combining the first sub-bitstream and the second sub-bitstream in the scalable bitstream, and signaling an indication of a highest temporal level of the first sub-bitstream comprising at least one of the reference portions in the scalable bitstream.

公开(公告)号：US11166030B2

公开(公告)日：2021-11-02

申请号：US16838619

申请日：2020-04-02

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Do-Kyoung Kwon ,  Hyung-Joon Kim

IPC: H04N19/154 ,  H04N19/172 ,  H04N19/115 ,  H04N19/194

Abstract: An embodiment includes a method and an encoder for SSIM-based bits allocation. The encoder includes a memory and a processor utilized for allocating bits based on SSIM, wherein the processor estimates the model parameter of SSIM-based distortion model for the current picture and determines allocates bits based on the SSIM estimation.

公开(公告)号：US11102497B2

公开(公告)日：2021-08-24

申请号：US16701700

申请日：2019-12-03

Applicant: Texas Instruments Incorporated

Inventor： Do-Kyoung Kwon ,  Madhukar Budagavi

IPC: H04N19/31 ,  H04N19/46 ,  H04N19/423 ,  H04N19/573 ,  H04N19/577 ,  H04N19/105 ,  H04N19/172 ,  H04N19/156 ,  H04N19/187 ,  H04N19/44 ,  H04N19/33

Abstract: A method for encoding a video sequence in a scalable video encoder to generate a scalable bitstream is provided that includes encoding the video sequence in a first layer encoder of the scalable video encoder to generate a first sub-bitstream, encoding the video sequence in a second layer encoder of the scalable video encoder to generate a second sub-bitstream, wherein portions of the video sequence being encoded in the second layer encoder are predicted using reference portions of the video sequence encoded in the first layer encoder, combining the first sub-bitstream and the second sub-bitstream to generate the scalable bitstream, and signaling in the scalable bitstream an indication of a maximum decoded picture buffer (DPB) size needed for decoding the second sub-bitstream and the first sub-bitstream when the second sub-bitstream is a target sub-bitstream for decoding.