公开(公告)号：US12160576B2

公开(公告)日：2024-12-03

申请号：US18511460

申请日：2023-11-16

Applicant: Apple Inc.

Inventor： Bae Keun Lee

IPC: H04N19/00 ,  H04N19/105 ,  H04N19/119 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/61 ,  H04N19/625 ,  H04N19/172 ,  H04N19/179 ,  H04N19/182 ,  H04N19/194 ,  H04N19/196 ,  H04N19/31 ,  H04N19/33 ,  H04N19/426

Abstract: A video decoding method according to the present invention may comprise: a step for determining whether to divide a current block into a plurality of sub-blocks; a step for determining an intra prediction mode for the current block; and a step for performing intra prediction for each sub-block on the basis of the intra prediction mode, when the current block is divided into the plurality of sub-blocks.

公开(公告)号：US20240380912A1

公开(公告)日：2024-11-14

申请号：US18782522

申请日：2024-07-24

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Jonatan Samuelsson ,  Rickard Sjöberg ,  Per Wennersten

IPC: H04N19/50 ,  H04N19/31 ,  H04N19/44 ,  H04N19/46

Abstract: The solution presented herein defines from which previously decoded picture to retrieve the values for calculating POC of the current picture regardless of how many temporal layers have been decoded. That is achieved by determining the POC of the current picture, to be used by the decoder, as a sum of a syntax element pic_order_cnt_Isb and most significant bits of the POC, PicOrderCntMsb, of the current picture, wherein the PicOrderCntMsb of the current picture is derived using at least a prevPicOrderCntMsb and a prevPicOrderCntLsb and the prevPicOrderCntMsb is set equal to the most significant bits of the POC of a previous reference picture in decoding order that has a layer identity equal to zero and prevPicOrderCntLsb is set equal to the value of the least significant bits of the POC of a previous reference picture in decoding order that has a layer identity equal to zero.

公开(公告)号：US12143616B2

公开(公告)日：2024-11-12

申请号：US17463777

申请日：2021-09-01

Applicant: Beijing Bytedance Network Technology Co., Ltd. ,  Bytedance Inc.

Inventor： Li Zhang ,  Kai Zhang ,  Hongbin Liu ,  Yue Wang

IPC: H04N19/46 ,  H04N19/132 ,  H04N19/176 ,  H04N19/184 ,  H04N19/186 ,  H04N19/30 ,  H04N19/31 ,  H04N19/70 ,  H04N19/82

Abstract: A video processing method is provided to include performing a conversion between a coded representation of a video including one or more video regions and the video, wherein the coded representation includes side information applicable for in-loop reshaping (ILR) of some of the one or more video regions, wherein the side information provides parameters for a reconstruction of a video unit of a video region based on a representation of the video unit in a first domain and a second domain and/or scaling chroma residue of a chroma video unit, and wherein the side information applicable to the some of the one or more video regions is coded without directly inheriting from other video regions.

公开(公告)号：US20240364934A1

公开(公告)日：2024-10-31

申请号：US18768430

申请日：2024-07-10

Applicant: Microsoft Technology Licensing, LLC

Inventor： Gary J. Sullivan

IPC: H04N19/70 ,  H04N19/103 ,  H04N19/15 ,  H04N19/172 ,  H04N19/184 ,  H04N19/31 ,  H04N19/44 ,  H04N19/46 ,  H04N19/88

CPC classification number: H04N19/70 ,  H04N19/103 ,  H04N19/15 ,  H04N19/172 ,  H04N19/31 ,  H04N19/44 ,  H04N19/46 ,  H04N19/88 ,  H04N19/184

Abstract: Techniques and tools for reducing latency in video encoding and decoding by constraining latency due to reordering of video frames, and by indicating the constraint on frame reordering latency with one or more syntax elements that accompany encoded data for the video frames. For example, a real-time communication tool with a video encoder sets a syntax element that indicates a constraint on frame reordering latency, which is consistent with inter-frame dependencies between multiple frames of a video sequence, then outputs the syntax element. A corresponding real-time communication tool with a video decoder receives the syntax element that indicates the constraint on frame reordering latency, determines the constraint on frame reordering latency based on the syntax element, and uses the constraint on frame reordering latency to determine when a reconstructed frame is ready for output (in terms of output order).

公开(公告)号：US12120344B2

公开(公告)日：2024-10-15

申请号：US17858181

申请日：2022-07-06

Applicant: Saturn Licensing LLC

Inventor： Ikuo Tsukagoshi

IPC: H04N19/587 ,  H04N7/01 ,  H04N19/132 ,  H04N19/187 ,  H04N19/31 ,  H04N19/70

CPC classification number: H04N19/587 ,  H04N7/01 ,  H04N19/132 ,  H04N19/187 ,  H04N19/31 ,  H04N19/70

Abstract: High frame rate moving image data is satisfactorily transmitted.
Mixing processing is performed in units of two temporally consecutive pictures in predetermined frame rate image data, and base frame rate image data is obtained. Image data of one picture in units of the two temporally consecutive pictures is extracted, and high frame rate enhanced frame image data is obtained. Prediction encoding processing of base frame rate image data is performed to the base frame rate image data, and a base stream is obtained. Prediction encoding processing with respect to the base frame rate image data is performed to the high frame rate enhanced frame image data, and an enhanced stream is obtained. A predetermined format container is transmitted including the base stream and the enhanced stream.

公开(公告)号：US12120329B2

公开(公告)日：2024-10-15

申请号：US18075822

申请日：2022-12-06

Applicant: LG ELECTRONICS INC.

Inventor： Hendry Hendry

IPC: H04N7/12 ,  G06T9/00 ,  H04N19/169 ,  H04N19/172 ,  H04N19/31

CPC classification number: H04N19/31 ,  G06T9/00 ,  H04N19/172 ,  H04N19/188

Abstract: According to embodiment(s) of the present document, multilayer-based coding can be performed. The multilayer-based coding can include a sub-bitstream extraction process. Inputs of the sub-bitstream extraction process can include a value related to a target OLS index and a value related to a highest temporal identifier.

公开(公告)号：US12120328B2

公开(公告)日：2024-10-15

申请号：US17855472

申请日：2022-06-30

Applicant: LG ELECTRONICS INC.

Inventor： Hendry Hendry ,  Jong Yeul Suh ,  Jin Won Lee ,  Seung Hwan Kim

IPC: H04N19/31 ,  H04N19/132 ,  H04N19/136 ,  H04N19/597 ,  H04N19/70

CPC classification number: H04N19/31 ,  H04N19/132 ,  H04N19/136 ,  H04N19/597

Abstract: A transmission device of point cloud data and method performed by the transmission device, and a reception device and a method performed by the reception device are provided. A method performed by a reception device of point cloud data comprises acquiring geometry-based point cloud compression (G-PCC) file including the point cloud data, wherein the G-PCC file includes information on a sample group in which samples in the G-PCC file are grouped based on one or more temporal levels and wherein the G-PCC file further includes information on the temporal levels, and extracting one or more samples belonging to a target temporal level from the samples in the G-PCC file based on the information on the sample group and the information on the temporal levels.

公开(公告)号：US12108061B2

公开(公告)日：2024-10-01

申请号：US18616841

申请日：2024-03-26

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Robin Atkins ,  Peng Yin ,  Taoran Lu ,  Fangjun Pu ,  Sean Thomas McCarthy ,  Walter J. Husak ,  Tao Chen ,  Guan-Ming Su

IPC: H04N19/31 ,  H04N19/172 ,  H04N19/187 ,  H04N19/30 ,  H04N19/46 ,  H04N19/70

CPC classification number: H04N19/31 ,  H04N19/172 ,  H04N19/187 ,  H04N19/30 ,  H04N19/46 ,  H04N19/70

Abstract: Methods and systems for frame rate scalability are described. Support is provided for input and output video sequences with variable frame rate and variable shutter angle across scenes, or for input video sequences with fixed input frame rate and input shutter angle, but allowing a decoder to generate a video output at a different output frame rate and shutter angle than the corresponding input values. Techniques allowing a decoder to decode more computationally-efficiently a specific backward compatible target frame rate and shutter angle among those allowed are also presented.

公开(公告)号：US20240305811A1

公开(公告)日：2024-09-12

申请号：US18664111

申请日：2024-05-14

Applicant: LG ELECTRONICS INC.

Inventor： Jaehyun LIM ,  Jungsun KIM ,  Seungwook PARK ,  Jaewon SUNG ,  Byeongmoon JEON ,  Joonyoung PARK ,  Yongjoon JEON ,  Younghee CHOI

IPC: H04N19/52 ,  G06T9/00 ,  H04N19/159 ,  H04N19/176 ,  H04N19/182 ,  H04N19/31

CPC classification number: H04N19/52 ,  G06T9/004 ,  H04N19/159 ,  H04N19/176 ,  H04N19/182 ,  H04N19/31

Abstract: The present disclosure relates to a technique for encoding and decoding video data, and more particularly, to a method for performing inter-prediction in an effective manner. The present disclosure combines an inter-prediction method using an AMVP mode and an inter-prediction method using a merge mode so as to propose a method for using the same candidate. The method for encoding video data proposed by the present disclosure comprises the following steps: receiving mode information on an inter-prediction method of a current block; determining, on the basis of the received mode information, whether the interprediction method to be applied to the current block is an AMVP mode or a merge mode; and selecting a candidate to derive motion information of the current block, wherein the candidate is selected in a left region, top region and corner region of the current block and in the same position block as the current block, and the AMVP mode and the merge mode are applied on the basis of the selected candidate.

公开(公告)号：US12058353B2

公开(公告)日：2024-08-06

申请号：US18123772

申请日：2023-03-20

Applicant: Texas Instruments Incorporated

Inventor： Do-Kyoung Kwon ,  Madhukar Budagavi

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

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: A method includes decoding, by a decoder, an indication of a decoded picture buffer (DPB) size from a bitstream. In addition, the method includes decoding, by the decoder, a first enhancement layer of the bitstream and a reference layer of the bitstream based on the indication of the DPB size to generate decoded data. The method also includes outputting, by the decoder, the decoded data.