公开(公告)号：US20200260070A1

公开(公告)日：2020-08-13

申请号：US16852735

申请日：2020-04-20

Applicant: LG Electronics Inc.

Inventor： Sunmi YOO ,  Jungah CHOI ,  Jangwon CHOI ,  Seunghwan KIM

IPC: H04N19/103 ,  H04N19/176 ,  H04N19/61

Abstract: A method for decoding an image according to the present document includes obtaining prediction mode information and residual related information from a bitstream, deriving prediction samples of a current block by performing prediction based on the prediction mode information, deriving residual samples of the current block based on the residual related information, and generating reconstruction samples of the current block based on the prediction samples and the residual samples, and the residual related information includes a transform skip flag based on a size of the current block and a maximum transform skip size, the transform skip flag represents whether a transform skip is applied to the current block, and information about the maximum transform skip size is obtained from the bitstream.

公开(公告)号：US20200084455A1

公开(公告)日：2020-03-12

申请号：US16677100

申请日：2019-11-07

Applicant: LG ELECTRONICS INC.

Inventor： Jin HEO ,  Yongjoon JEON ,  Sunmi YOO ,  Eunyong SON ,  Junghak NAM

IPC: H04N19/159 ,  H04N19/593 ,  H04N19/119 ,  H04N19/107 ,  H04N19/176

Abstract: In the present invention, a method for processing an image on the basis of an intra prediction mode and an apparatus therefor are disclosed. Particularly, the method for processing an image on the basis of an intra prediction mode may comprise the steps of: partitioning a block to be processed, on the basis of an intra prediction mode of the block to be processed; and performing intra prediction for the split block to be processed, wherein the direction in which the block to be processed is split is perpendicular to the prediction direction of the intra prediction mode of the block to be processed.

公开(公告)号：US20200007891A1

公开(公告)日：2020-01-02

申请号：US16475002

申请日：2016-12-28

Applicant: LG Electronics Inc. ,  EWHA UNIVERSITY-INDUSTRY COLLABORATION FOUNDATION

Inventor： Je-Won KANG ,  Soo Kyung RYU ,  Jaehyun LIM ,  Sunmi YOO ,  Jaeho LEE ,  Min-Joo KANG

IPC: H04N19/593 ,  H04N19/174 ,  H04N19/18 ,  H04N19/132 ,  H04N19/182

Abstract: Disclosed is a method for encoding/decoding a still image or moving image based on an intra-prediction mode and an apparatus supporting the same. Particularly, a method for processing an image based on an intra prediction mode may include determining an intra prediction mode set used for an intra prediction in a current prediction processing unit among multiple intra prediction mode sets having different resolutions with each other, wherein the resolution represents a degree of distribution of the intra prediction mode in the intra prediction mode set; deriving an intra prediction mode applied to the current prediction processing unit in the determined intra prediction mode set using index information received from an encoder; and generating a prediction sample of the current prediction processing unit based on the derived intra prediction mode, and each of the intra prediction mode sets includes one or more intra prediction modes.

公开(公告)号：US20190230352A1

公开(公告)日：2019-07-25

申请号：US16337802

申请日：2017-08-30

Applicant: LG ELECTRONICS INC.

Inventor： Jin HEO ,  Hyeongmoon JANG ,  Sunmi YOO

IPC: H04N19/11 ,  H04N19/593 ,  H04N19/186 ,  H04N19/176 ,  H04N19/159 ,  H04N19/513

Abstract: The image decoding method performed by a decoding apparatus, according to the present invention, comprises the steps of: receiving intra prediction mode information of a current chroma block; deriving intra prediction candidate modes of the current chroma block on the basis of a neighboring chroma block of the current chroma block; deriving an intra prediction mode of the current chroma block on the basis of the intra prediction mode information and the intra prediction candidate modes; and predict the current chroma block on the basis of the intra prediction mode, wherein the intra prediction candidate modes include an intra prediction mode applied to a neighboring chroma block of the current chroma block.

公开(公告)号：US20180255304A1

公开(公告)日：2018-09-06

申请号：US15562304

申请日：2016-03-29

Applicant: LG ELECTRONICS INC.

Inventor： Yongjoon JEON ,  Jin HEO ,  Sunmi YOO ,  Seungwook PARK

IPC: H04N19/159 ,  H04N19/70 ,  H04N19/46 ,  H04N19/176

CPC classification number: H04N19/159 ,  H04N19/105 ,  H04N19/11 ,  H04N19/129 ,  H04N19/134 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

Abstract: The present invention provides a method for decoding a video signal, the method comprising the steps of: obtaining, from a video signal, a flip flag for indicating whether a flip of an angle interval is performed when an intra prediction is performed; deriving a flip angle variable according to an intra prediction mode if the flip of the angle interval is performed according to the flip flag when the intra prediction is performed; and generating an intra prediction sample based on the flip angle variable, wherein the angle interval indicates an interval between angle parameters, which indicate a predicting direction.

公开(公告)号：US20180184131A1

公开(公告)日：2018-06-28

申请号：US15735450

申请日：2016-06-13

Applicant: LG ELECTRONICS INC.

Inventor： Sunmi YOO ,  Jin HEO ,  Junghak NAM

IPC: H04N19/91 ,  H04N19/124 ,  H04N19/159 ,  H04N19/176 ,  H04N19/44

CPC classification number: H04N19/91 ,  H04N19/124 ,  H04N19/159 ,  H04N19/176 ,  H04N19/44 ,  H04N19/48

Abstract: The present invention provides a method for encoding/decoding an image and a device therefor. Particularly, a method for encoding an image by an encoding device may comprise the steps of: dividing a quantized coefficient block into coefficient groups having a predetermined size; searching a first coefficient group which is a last coefficient group including a non-zero coefficient within the quantized coefficient block according to a predetermined inverse-scanning order; searching the first coefficient group for the last non-zero coefficient according to the inverse-scanning order; relocating the non-zero coefficient of the first coefficient group to a second coefficient group which is a preceding coefficient group of the last coefficient group according to the inverse-scanning order; and entropy-encoding by an encoder according to a predetermined scanning order.

公开(公告)号：US20180098074A1

公开(公告)日：2018-04-05

申请号：US15560651

申请日：2015-12-03

Applicant: LG Electronics Inc.

Inventor： Jin HEO ,  Yongjoon JEON ,  Sunmi YOO ,  Eunyong SON ,  Junghak NAM

IPC: H04N19/159 ,  H04N19/176 ,  H04N19/107

CPC classification number: H04N19/159 ,  H04N19/107 ,  H04N19/119 ,  H04N19/176 ,  H04N19/593

Abstract: In the present invention, a method for processing an image on the basis of an intra prediction mode and an apparatus therefor are disclosed. Particularly, the method for processing an image on the basis of an intra prediction mode may comprise the steps of: partitioning a block to be processed, on the basis of an intra prediction mode of the block to be processed; and performing intra prediction for the split block to be processed, wherein the direction in which the block to be processed is split is perpendicular to the prediction direction of the intra prediction mode of the block to be processed.

公开(公告)号：US20180091810A1

公开(公告)日：2018-03-29

申请号：US15560101

申请日：2016-03-22

Applicant: LG Electronics Inc.

Inventor： Eunyong SON ,  Seungwook PARK ,  Yongjoon JEON ,  Moonmo KOO ,  Jin HEO ,  Sunmi YOO

IPC: H04N19/105 ,  H04N19/109 ,  H04N19/115 ,  H04N19/96 ,  H04N19/13

CPC classification number: H04N19/105 ,  H04N19/109 ,  H04N19/11 ,  H04N19/115 ,  H04N19/13 ,  H04N19/96

Abstract: The present invention relates to a method and a device for decoding a bitstream for a video signal, the method comprising the steps of: acquiring, from the bitstream, type number information and type information for a plurality of CTBs; acquiring, from the bitstream, type indication information for a current CTB among the plurality of CTBs; determining the size of the current CTB on the basis of a CTB type indicated by the type indication information; determining one or more coding blocks within the current CTB on the basis of the determined size of the current CTB and the determined minimum size of the coding block; acquiring, from the bitstream, prediction mode information with respect to each of the one or more coding blocks; and reconstructing a current coding block among the one or more coding blocks on the basis of prediction mode information related to the current coding block.

公开(公告)号：US20250071276A1

公开(公告)日：2025-02-27

申请号：US18935072

申请日：2024-11-01

Applicant: LG Electronics Inc.

Inventor： Sunmi YOO ,  Jungah CHOI ,  Jangwon CHOI

IPC: H04N19/12 ,  H04N19/124 ,  H04N19/132 ,  H04N19/176 ,  H04N19/60 ,  H04N19/70

Abstract: According to the disclosure of the present document, transform skip availability information and palette availability information are signaled via a sequence parameter set (SPS), and transform skip- and/or palette coding-related information can be effectively parsed/signaled on the basis of at least one of the transform skip availability information and the palette availability information. 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：US20250063180A1

公开(公告)日：2025-02-20

申请号：US18724653

申请日：2022-12-30

Applicant: LG ELECTRONICS INC.

Inventor： Sunmi YOO ,  Hyeongmoon JANG ,  Junghak NAM ,  Jangwon CHOI ,  Seunghwan KIM

IPC: H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  H04N19/96

Abstract: According to the present disclosure, an image decoding method performed by a decoding device includes the steps of acquiring image information including prediction-related information from a bitstream; deriving an intra prediction mode with respect to a current block on the basis of the prediction-related information; generating prediction samples with respect to the current block on the basis of the intra prediction mode with respect to the current block; and generating reconstruction samples with respect to the current block on the basis of the prediction samples with respect to the current block, wherein the intra prediction mode is derived on the basis of whether an upper neighboring block of the current block exists in the same coding tree unit (CTU) as the current block.