公开(公告)号：RU2745779C2

公开(公告)日：2021-03-31

申请号：RU2020114225

申请日：2017-12-27

Applicant: LG ELECTRONICS INC

Inventor： JANG HYEONGMOON ,  NAM JUNGHAK ,  KIM SEUNGHWAN ,  LIM JAEHYUN

IPC: H04N19/50

Abstract: Группаизобретенийхарактеризуетспособыи устройствакодирования/декодированиясигналавидео. Техническимрезультатомявляетсяповышениеэффективностикодирования/декодированиясигналавидео. Предложенспособдлядекодированиясигналавидео. Способсодержитэтапэнтропийногодекодированияи обратногоквантованиянадсигналомвидеодлягенерацииостаточногоблокатекущегоблока. Далее, согласноспособу, осуществляютанализфлагапропускапреобразования, включающегов себяинформациюо том, применяетсялипропускпреобразованияк текущемублоку, наосноветого, чторазмертекущегоблокаменьше, чемпредопределенныйпервыйразмер. Атакжеосуществляютанализиндекса, задающегоядрапреобразования, которыедолжныбытьпримененыв горизонтальноми вертикальномнаправленияхк текущемублоку, наосновефлагапропускапреобразования. 2 н. и 4 з.п. ф-лы, 13 ил., 1 табл.

公开(公告)号：AU2018341190B2

公开(公告)日：2021-02-18

申请号：AU2018341190

申请日：2018-04-03

Applicant: LG ELECTRONICS INC

Inventor： NAM JUNGHAK ,  KIM SEUNGHWAN ,  JANG HYEONGMOON ,  LIM JAEHYUN

IPC: H04N19/119 ,  H04N19/122 ,  H04N19/176 ,  H04N19/70

Abstract: An image decoding method performed by means of a decoding device according to the present invention comprises the steps of: obtaining first split information relating to a first target block; if the first split information indicates that the first target block is to be split, splitting the first target block into first sub-blocks; obtaining MPT split information relating to a second target block which is one of the first sub-blocks of the first target block; splitting the second target block into second sub-blocks on the basis of the MPT split information; and decoding the second sub-blocks, wherein the second sub-blocks are non-square blocks.

公开(公告)号：CA3143240A1

公开(公告)日：2020-12-17

申请号：CA3143240

申请日：2020-06-11

Applicant: LG ELECTRONICS INC

Inventor： PALURI SEETHAL ,  KIM SEUNGHWAN ,  ZHAO JIE

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

Abstract: An image decoding method performed by a decoding device, according to the present document, comprises the steps of: obtaining image information; and generating a reconstructed picture on the basis of the image information.

公开(公告)号：CA3137181A1

公开(公告)日：2020-10-22

申请号：CA3137181

申请日：2020-04-16

Applicant: LG ELECTRONICS INC

Inventor： NAM JUNGHAK ,  LIM JAEHYUN ,  KOO MOONMO ,  KIM SEUNGHWAN

IPC: H04N19/159 ,  H04N19/119 ,  H04N19/132 ,  H04N19/18 ,  H04N19/593 ,  H04N19/70

Abstract: An image coding method according to the present document comprises the steps of: deriving transform coefficients for a current block on the basis of residual-related information; and generating residual samples of the current block on the basis of the transform coefficients. The residual-related information comprises low frequency non-separable transform (LFNST) index information, showing information relating to non-separable transform for low-frequency transform coefficients of the current block, on the basis of a matrix-based intra-prediction (MIP) flag showing whether or not MIP is applied to the current block. The residual samples are generated from the transform coefficients on the basis of the LFNST index information.

公开(公告)号：AU2019383886A1

公开(公告)日：2020-06-18

申请号：AU2019383886

申请日：2019-11-11

Applicant: LG ELECTRONICS INC

Inventor： CHOI JANGWON ,  HEO JIN ,  KIM SEUNGHWAN ,  YOO SUNMI ,  LI LING ,  CHOI JUNGAH

IPC: H04N19/11 ,  H04N19/132 ,  H04N19/186 ,  H04N19/593 ,  H04N19/70

Abstract: A video decoding method performed by a decoding apparatus according to the present disclosure includes deriving one of a plurality of cross-component linear model (CCLM) prediction mode as a CCLM prediction mode of the current chroma block, deriving a sample number of neighboring chroma samples of the current chroma block based on the CCLM prediction mode of the current chroma block, a size of the current chroma block, and a specific value; deriving the neighboring chroma samples of the sample number, calculating CCLM parameters based on the neighboring chroma samples and the down sampled neighboring luma samples, deriving prediction samples for the current chroma block based on the CCLM parameters and the down sampled luma samples and generating reconstructed samples for the current chroma block based on the prediction samples, wherein the specific value is derived as 2.

公开(公告)号：CA3119744A1

公开(公告)日：2020-05-22

申请号：CA3119744

申请日：2019-11-12

Applicant: LG ELECTRONICS INC

Inventor： CHOI JUNGAH ,  YOO SUNMI ,  HEO JIN ,  LI LING ,  CHOI JANGWON ,  KIM SEUNGHWAN

IPC: H04N19/91 ,  H04N19/122 ,  H04N19/124 ,  H04N19/132 ,  H04N19/176 ,  H04N19/18

Abstract: An image decoding method performed by a decoding apparatus, according to the present disclosure, comprises the steps of: receiving a bitstream including residual information; deriving quantized transform coefficients with respect to a current block, on the basis of the residual information included in the bitstream; deriving residual samples with respect to the current block, on the basis of the quantized transform coefficients; and generating a reconstructed picture, on the basis of the residual samples with respect to the current block.

公开(公告)号：CA3060201A1

公开(公告)日：2018-10-18

申请号：CA3060201

申请日：2018-03-13

Applicant: LG ELECTRONICS INC

Inventor： KOO MOONMO ,  KIM SEUNGHWAN

IPC: H04N19/13 ,  H04N19/119 ,  H04N19/124 ,  H04N19/129 ,  H04N19/176

Abstract: Disclosed are an image encoding/decoding method and a device therefor. Specifically, an image encoding method may comprise the steps of: generating a quantized transform block by performing transform and quantization on a residual signal of a current block; splitting the quantized transform block into a plurality of coefficient groups; determining a first scan order representing the scan order among the coefficients of the coefficient groups; and entropy encoding the coefficients of the quantized transform block according to the first scan order, and a second scan order representing the scan order among the plurality of coefficient groups.

公开(公告)号：CA3060035A1

公开(公告)日：2018-10-18

申请号：CA3060035

申请日：2018-04-09

Applicant: LG ELECTRONICS INC

Inventor： KOO MOONMO ,  KIM SEUNGHWAN

IPC: H04N19/129 ,  H04N19/13 ,  H04N19/18 ,  H04N19/70

Abstract: The present invention provides a method for decoding a video signal, the method comprising the steps of: decoding, from a bitstream, a syntax element indicating the last non-zero region, wherein the last non-zero region represents a region including the last non-zero transform coefficient in a scan order; splitting a current block into multiple sub-regions; and on the basis of the syntax element, determining the last non-zero region of the current block among the split sub-regions.

公开(公告)号：CA3049196A1

公开(公告)日：2018-07-12

申请号：CA3049196

申请日：2017-12-27

Applicant: LG ELECTRONICS INC

Inventor： JANG HYEONGMOON ,  NAM JUNGHAK ,  KIM SEUNGHWAN ,  LIM JAEHYUN

IPC: H04N19/60 ,  H04N19/119 ,  H04N19/13 ,  H04N19/176 ,  H04N19/70

Abstract: A method for encoding/decoding a video signal and a device for same are disclosed. In particular, the method for decoding a video signal may comprise the steps of: generating a residual block of a current block by carrying out entropy decoding on the video signal; if the size of the current block is smaller than a predetermined first size, parsing a transform skip flag which indicates whether a transform skip is applicable to the current block; determining whether or not to parse a primary transform flag which indicates whether a primary transform is applicable to the current block; if it has been determined to parse the primary transform flag, parsing the primary transform flag; and if the primary transform flag indicates that the primary transform is applicable to the current block, carrying out a primary inverse transform on the residual block and thereby generating a transform block obtained by the primary inverse transform of the current block.

公开(公告)号：FI3709658T3

公开(公告)日：2025-05-05

申请号：FI19870047

申请日：2019-11-12

Applicant: LG ELECTRONICS INC

Inventor： CHOI JUNGAH ,  YOO SUNMI ,  HEO JIN ,  LI LING ,  CHOI JANGWON ,  KIM SEUNGHWAN

IPC: H04N19/91 ,  H04N19/122 ,  H04N19/124 ,  H04N19/132 ,  H04N19/176 ,  H04N19/18

Abstract: An image decoding method performed by a decoding apparatus according to the present disclosure includes receiving a bitstream including residual information; deriving quantized transform coefficients for a current block based on the residual information included in the bitstream; deriving residual samples for the current block based on the quantized transform coefficients; and generating a reconstructed picture based on the residual samples for the current block.