公开(公告)号：US09621909B2

公开(公告)日：2017-04-11

申请号：US14359634

申请日：2013-07-02

Applicant: LG Electronics Inc.

Inventor： Jungsun Kim ,  Joonyoung Park ,  Chulkeun Kim ,  Hendry Hendry ,  Byeongmoon Jeon

IPC: H04N19/503 ,  H04N19/176 ,  H04N19/124 ,  H04N19/463 ,  H04N19/91 ,  H04N19/184 ,  H04N19/46 ,  H04N19/70

CPC classification number: H04N19/44 ,  H04N19/124 ,  H04N19/176 ,  H04N19/184 ,  H04N19/463 ,  H04N19/503 ,  H04N19/91

Abstract: A method or coding image information, according to the present invention, comprises the steps of: binarizing according to different techniques, index values of forward prediction, backward prediction, and bidirectional prediction, depending on whether the bidirectional prediction is applied when inter-predicting a current block; and entropy coding a binarized codeword, wherein whether to apply the bidirectional prediction when inter-predicting the current block can be determined on the basis of the size of the current block. As a result, provided are a method for binarizing an inter-prediction direction of a prediction unit having a specific size, and an apparatus using same.

公开(公告)号：US20150201203A1

公开(公告)日：2015-07-16

申请号：US14419879

申请日：2013-09-09

Applicant: LG ELECTRONICS INC.

Inventor： Hendry Hendry ,  Joonyoung Park ,  Chulkeun Kim ,  Byeongmoon Jeon ,  Jungsun Kim

IPC: H04N19/29 ,  H04N19/132 ,  H04N19/184 ,  H04N19/44 ,  H04N19/51

CPC classification number: H04N19/29 ,  H04N19/12 ,  H04N19/132 ,  H04N19/134 ,  H04N19/139 ,  H04N19/176 ,  H04N19/184 ,  H04N19/187 ,  H04N19/30 ,  H04N19/44 ,  H04N19/51 ,  H04N19/59 ,  H04N19/70

Abstract: The present invention relates to a method and an apparatus for decoding an image, for decoding a bitstream including a plurality of layers. The image decoding method may comprise: a step of receiving and identifying dependency information indicating whether an upper layer is coded by the same coding method as a lower layer; and a step of recovering the image of the upper layer based on the identified dependency information. Thus, information indicating whether the information of the reference layer which the current layer refers to is encoded data or recovered value can be identified.

Abstract translation: 本发明涉及一种用于对图像进行解码的方法和装置，用于对包含多个层的比特流进行解码。 图像解码方法可以包括：接收并识别表示通过与下层相同的编码方法对上层进行编码的依赖关系信息的步骤; 以及基于所识别的依赖关系信息来恢复上层的图像的步骤。 因此，可以识别指示当前层参考的参考层的信息是编码数据还是恢复值的信息。

公开(公告)号：US20150055715A1

公开(公告)日：2015-02-26

申请号：US14387002

申请日：2013-03-22

Applicant: LG Electronics Inc.

Inventor： Hendry Hendry ,  Byeongmoon Jeon ,  Jungsun Kim ,  Sangoh Jeong

IPC: H04N19/44 ,  H04N19/70

CPC classification number: H04N19/44 ,  H04N19/436 ,  H04N19/70

Abstract: The present invention relates to a video encoding method, to a video decoding method and to an apparatus using same. A video encoding method according to the present invention comprises: a step of encoding substreams which are rows of largest coding units (LCUs) in parallel with each other; and a step of transmitting a bit stream including the encoded substreams. The number of the substreams may be the same as the number of entry points.

Abstract translation: 本发明涉及一种视频编码方法，一种视频解码方法和一种使用它的装置。 根据本发明的视频编码方法包括：将彼此并行的最大编码单元行（LCU）的子流编码的步骤; 以及发送包括编码子流的比特流的步骤。 子流的数量可以与入口点的数量相同。

公开(公告)号：US12301836B2

公开(公告)日：2025-05-13

申请号：US18629859

申请日：2024-04-08

Applicant: LG ELECTRONICS INC.

Inventor： Hendry Hendry ,  Joonyoung Park ,  Chulkeun Kim ,  Byeongmoon Jeon ,  Jungsun Kim

IPC: H04N19/00 ,  H04N7/00 ,  H04N19/105 ,  H04N19/159 ,  H04N19/172 ,  H04N19/184 ,  H04N19/423 ,  H04N19/46 ,  H04N19/58 ,  H04N19/70

Abstract: Disclosed is a video decoding method which includes receiving reference picture set (RPS) information for constructing an RPS for a current picture, the RPS information comprising most significant bit (MSB) information for calculating an MSB of a picture order count (POC) of a long-term reference picture (LTRP) for the current picture and flag information indicating whether the MSB information is present; and deriving the RPS using the received MSB information and marking a reference picture when the flag information is 1, the flag information equal to 1 if there is more than one POC in a previous picture POC set comprising POCs relating to a previous picture that has a temporal sub-layer identifier equal to 0 and cannot be discarded without affecting decodability of another picture in the same temporal layer for which the POC modulo MaxPicOrderCntLsb is equal to an LSB of the POC of the LTRP, MaxPicOrderCntLsb is the max least significant bit (LSB) value.

公开(公告)号：US12273549B2

公开(公告)日：2025-04-08

申请号：US18391365

申请日：2023-12-20

Applicant: LG Electronics Inc.

Inventor： Seethal Paluri ,  Hendry Hendry ,  Jie Zhao ,  Seunghwan Kim

IPC: H04N19/46 ,  H04N19/137 ,  H04N19/174 ,  H04N19/70

Abstract: A video decoding method by a video decoding apparatus includes: parsing, from a picture parameter set of a bitstream, a first flag related to whether a weighted prediction is applied to slices referring to the picture parameter set; parsing, from the picture parameter set, a second flag related to whether information about the weighted prediction is present in a picture header of the bitstream or is present in a slice header of the bitstream based on the first flag; parsing a prediction weighted table syntax from the picture header or the slice header based on the first flag and the second flag; generating prediction samples for the current block by performing weighted prediction for the current block in a current picture based on syntax elements in the prediction weighted table syntax; and generating reconstructed samples based on the prediction samples.

公开(公告)号：US12262012B2

公开(公告)日：2025-03-25

申请号：US18583100

申请日：2024-02-21

Applicant: LG ELECTRONICS INC.

Inventor： Hendry Hendry ,  Seunghwan Kim ,  Jie Zhao

IPC: H04N19/124 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70

Abstract: According to the disclosure of the present document, chroma quantization parameter offset-related information may be signaled via a palette coding syntax, and index information about a chroma quantization parameter offset list may be efficiently parsed/signaled on the basis of information about the number of entries within the chroma quantization parameter offset list. Accordingly, bits that need to be signaled for video/image coding can be reduced, and coding efficiency can be improved.

公开(公告)号：US12200208B2

公开(公告)日：2025-01-14

申请号：US17949013

申请日：2022-09-20

Applicant: LG ELECTRONICS INC.

Inventor： Seethal Paluri ,  Hendry Hendry ,  Seunghawan Kim

IPC: H04N19/117 ,  H04N19/172 ,  H04N19/46 ,  H04N19/70 ,  H04N19/82

Abstract: A method by which a decoding device decodes an image, according to the present document, comprises the steps of: obtaining image information from a bitstream; generating a reconstructed picture of the current picture; deriving deblocking filter parameter information related to deblocking filter parameters on the basis of the image information; and performing deblocking filtering on the reconstructed picture on the basis of the deblocking filter parameters so as to generate a modified reconstructed picture.

公开(公告)号：US12177422B2

公开(公告)日：2024-12-24

申请号：US18215776

申请日：2023-06-28

Applicant: LG ELECTRONICS INC.

Inventor： Seethal Paluri ,  Hendry Hendry ,  Seunghwan Kim ,  Jie Zhao

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/137 ,  H04N19/159 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/51 ,  H04N19/70

Abstract: A video decoding method performed by a video decoding apparatus according to the present document may comprise the steps of: parsing a prediction weighted table syntax from a bitstream; parsing number information about weighted reference pictures in a reference picture list from the prediction weighted table syntax; deriving a weighting factor-related flag about the reference picture list on the basis of the number information; performing weighted prediction on a current block on the basis of the weighting factor-related flag so as to derive prediction samples of the current block; generating residual samples on the basis of residual information obtained from the bitstream; and reconstructing a current picture on the basis of the prediction samples and the residual samples, wherein the prediction weighted table syntax is parsed from a picture header of the bitstream.

公开(公告)号：US12170777B2

公开(公告)日：2024-12-17

申请号：US17774434

申请日：2020-11-04

Applicant: LG ELECTRONICS INC.

Inventor： Hendry Hendry ,  Jie Zhao ,  Seunghwan Kim

IPC: H04N19/132 ,  H04N19/105 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46 ,  H04N19/70

Abstract: A video decoding method performed by a decoding device according to the present document is characterized by comprising: a step for acquiring information for a chroma quantization parameter (QP) offset for the current picture; and a step for acquiring chroma QP offset index information for a current chroma block in the current picture, wherein the information for the chroma QP offset includes chroma QP offset list length information, information for a chroma QP offset list is acquired on the basis of the chroma QP offset list length information, and the chroma QP offset index information is acquired on the basis of the chroma QP offset list length information.

公开(公告)号：US12166996B2

公开(公告)日：2024-12-10

申请号：US17783572

申请日：2020-12-10

Applicant: LG ELECTRONICS INC.

Inventor： Hendry Hendry ,  Seunghwan Kim

IPC: H04N19/136 ,  H04N19/132 ,  H04N19/176 ,  H04N19/46

Abstract: An image decoding method performed by a decoding device according to the present disclosure comprises the steps of: obtaining prediction-related information and indication information comprising a first flag which indicates whether or not a sample adaptive offset (SAO) process to be applied to a current block is applied at a picture level or a slice level; parsing information related to the SAO process from a picture header or a slice header on the basis of the first flag; generating prediction samples for the current block on the basis of the prediction-related information; generating reconstructed samples for the current block on the basis of the prediction samples; and performing the SAO process for the reconstructed samples on the basis of the information related to the SAO process.