公开(公告)号：US12267492B2

公开(公告)日：2025-04-01

申请号：US18399315

申请日：2023-12-28

Applicant: INTELLECTUAL DISCOVERY CO., LTD.

Inventor： Sung Chang Lim ,  Jung Won Kang ,  Ha Hyun Lee ,  Dong San Jun ,  Hyun Suk Ko ,  Jin Ho Lee ,  Hui Yong Kim

IPC: H04N19/00 ,  H04N19/105 ,  H04N19/117 ,  H04N19/132 ,  H04N19/169 ,  H04N19/176 ,  H04N19/186 ,  H04N19/82

Abstract: The present invention relates to a video encoding/decoding method and apparatus. The video decoding method according to the present invention may comprise decoding filter information on a coding unit; classifying samples in the coding unit into classes on a per block classification unit basis; and filtering the coding unit having the samples classified into the classes on a per block classification unit basis by using the filter information.

公开(公告)号：US12022110B2

公开(公告)日：2024-06-25

申请号：US17723725

申请日：2022-04-19

Applicant: INTELLECTUAL DISCOVERY CO., LTD.

Inventor： Ha Hyun Lee ,  Jung Won Kang ,  Hyun Suk Ko ,  Sung Chang Lim ,  Jin Ho Lee ,  Dong San Jun ,  Seung Hyun Cho ,  Hui Yong Kim ,  Jin Soo Choi

IPC: H04N19/513 ,  H04N19/105 ,  H04N19/139 ,  H04N19/176 ,  H04N19/537

CPC classification number: H04N19/521 ,  H04N19/105 ,  H04N19/139 ,  H04N19/176 ,  H04N19/537

Abstract: The present invention relates to a method for encoding and decoding an image. The method for decoding an image includes: deriving an initial motion vector from a merge candidate list of a current block; deriving a refined motion vector using the initial motion vector; and generating a prediction block of the current block using the refined motion vector.

公开(公告)号：US11943475B2

公开(公告)日：2024-03-26

申请号：US18079425

申请日：2022-12-12

Applicant: Intellectual Discovery Co., Ltd.

Inventor： Hyun Suk Ko ,  Sung Chang Lim ,  Jung Won Kang ,  Jin Ho Lee ,  Ha Hyun Lee ,  Dong San Jun ,  Hui Yong Kim

IPC: H04N19/00 ,  H04N19/176 ,  H04N19/184 ,  H04N19/593

CPC classification number: H04N19/593 ,  H04N19/176 ,  H04N19/184

Abstract: The present invention relates to an image encoding/decoding method and apparatus. The image decoding method according to the present invention may comprise configuring an MPM list based on intra-prediction modes of neighbor blocks of a current block and a number of frequencies of the intra-prediction modes of the neighbor blocks, deriving an intra-prediction mode of the current block based on the MPM list, and performing intra-prediction for the current block based on the intra-prediction mode.

公开(公告)号：US12200227B2

公开(公告)日：2025-01-14

申请号：US18080193

申请日：2022-12-13

Applicant: Intellectual Discovery Co., Ltd.

Inventor： Dong San Jun ,  Ha Hyun Lee ,  Jung Won Kang ,  Hyun Suk Ko ,  Sung Chang Lim ,  Jin Ho Lee ,  Hui Yong Kim

IPC: H04N19/119 ,  H04N19/159 ,  H04N19/176 ,  H04N19/44

Abstract: The present invention relates to a video encoding/decoding method and apparatus. The video decoding method according to the present invention may comprise dividing a coding unit into a plurality of sub-units according to a block division structure and performing decoding based on the sub-unit, wherein the block division structure is a block division structure in which division is performed so as to include at least one sub-unit having a predetermined block form other than square and rectangle forms.

公开(公告)号：US12155859B2

公开(公告)日：2024-11-26

申请号：US18346732

申请日：2023-07-03

Applicant: INTELLECTUAL DISCOVERY CO., LTD.

Inventor： Ha Hyun Lee ,  Jung Won Kang ,  Hyun Suk Ko ,  Sung Chang Lim ,  Jin Ho Lee ,  Dong San Jun ,  Seung Hyun Cho ,  Hui Yong Kim ,  Jin Soo Choi

IPC: H04N19/176 ,  H04N19/105 ,  H04N19/139 ,  H04N19/513 ,  H04N19/537

Abstract: The present invention relates to a method for encoding and decoding an image. The method for decoding an image includes: deriving an initial motion vector from a merge candidate list of a current block; deriving a refined motion vector using the initial motion vector; and generating a prediction block of the current block using the refined motion vector.

公开(公告)号：US12075087B2

公开(公告)日：2024-08-27

申请号：US18103570

申请日：2023-01-31

Applicant: Intellectual Discovery Co., Ltd.

Inventor： Sung Chang Lim ,  Jung Won Kang ,  Hyun Suk Ko ,  Dong San Jun ,  Jin Ho Lee ,  Ha Hyun Lee ,  Hui Yong Kim

IPC: H04N19/523 ,  H04N19/13 ,  H04N19/176 ,  H04N19/124

CPC classification number: H04N19/523 ,  H04N19/176 ,  H04N19/124 ,  H04N19/13

Abstract: Disclosed is an image encoding method. The method includes deriving a motion refinement candidate from among motion information of spatial neighboring blocks, motion information of a temporal neighboring blocks, predefined motion information, and motion information that most frequently occurs in a reference picture, performing a motion information refinement on the derived motion refinement candidate, and generating a prediction block of a current block by using the motion refinement candidate having undergone the motion information refinement.

公开(公告)号：US12047563B2

公开(公告)日：2024-07-23

申请号：US17941182

申请日：2022-09-09

Applicant: INTELLECTUAL DISCOVERY CO., LTD.

Inventor： Dong San Jun ,  Ha Hyun Lee ,  Jung Won Kang ,  Hyun Suk Ko ,  Sung Chang Lim ,  Jin Ho Lee ,  Seung Hyun Cho ,  Hui Yong Kim ,  Jin Soo Choi

IPC: H04N19/176 ,  H04N19/109 ,  H04N19/117 ,  H04N19/119 ,  H04N19/132 ,  H04N19/172 ,  H04N19/174 ,  H04N19/182 ,  H04N19/513 ,  H04N19/86 ,  H04N19/91

CPC classification number: H04N19/109 ,  H04N19/117 ,  H04N19/119 ,  H04N19/132 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/182 ,  H04N19/513 ,  H04N19/86 ,  H04N19/91

Abstract: An image encoding method and an image decoding method are provided. The image decoding method includes deriving a temporal merge candidate from a co-located block of a current block, generating a merge candidate list of the current block based on the derived temporal merge candidate, and generating a prediction block of the current block based on the generated merge candidate list. The deriving a temporal merge candidate includes scaling a motion vector derived from the co-located block based on a POC difference value between the current block and a reference picture of the current block and a POC difference value between the co-located block and a reference picture of the co-located block, and modifying the scaled motion vector based on motion vector scaling information between a neighboring block of the current block and a co-located block of the neighboring block.

公开(公告)号：US12003713B2

公开(公告)日：2024-06-04

申请号：US17714009

申请日：2022-04-05

Applicant: INTELLECTUAL DISCOVERY CO., LTD.

Inventor： Jin Ho Lee ,  Jung Won Kang ,  Ha Hyun Lee ,  Sung Chang Lim ,  Hui Yong Kim

IPC: H04N19/117 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/52 ,  H04N19/82

CPC classification number: H04N19/117 ,  H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/52 ,  H04N19/82

Abstract: There is provided an image encoding/decoding method and apparatus. The image encoding method of the present invention includes: determining whether or not to apply filtering to a filtering target sample; determining a filter type on the basis of the determination; and applying filtering to the filtering target sample by using the determined filter type.

公开(公告)号：US11909961B2

公开(公告)日：2024-02-20

申请号：US16766611

申请日：2018-11-22

Applicant: Intellectual Discovery Co., Ltd.

Inventor： Hyun Suk Ko ,  Jin Ho Lee ,  Sung Chang Lim ,  Jung Won Kang ,  Ha Hyun Lee ,  Dong San Jun ,  Hui Yong Kim

IPC: H04N19/11 ,  H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/46 ,  H04N19/50 ,  H04N19/593 ,  H04N19/70 ,  H04N19/80

CPC classification number: H04N19/11 ,  H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/46 ,  H04N19/50 ,  H04N19/593 ,  H04N19/70 ,  H04N19/80

Abstract: In performing image encoding/decoding, decoding of an image is performed by deriving an intra prediction mode for a current block, decoding at least one original sample that is present in a rightmost column and a bottommost row (a bottom row) of the current block, constructing a reference sample by using the at least one decoded original sample and performing intra prediction on the current block by using the constructed reference sample.

公开(公告)号：US12155843B2

公开(公告)日：2024-11-26

申请号：US18358844

申请日：2023-07-25

Applicant: Intellectual Discovery Co., Ltd.

Inventor： Dong San Jun ,  Sung Chang Lim ,  Jung Won Kang ,  Hyun Suk Ko ,  Jin Ho Lee ,  Ha Hyun Lee ,  Hui Yong Kim

IPC: H04N19/00 ,  H04N19/11 ,  H04N19/159 ,  H04N19/176

Abstract: An image encoding/decoding method and apparatus for performing template matching-based intra prediction are provided. An image decoding method may comprise deriving a first intra-prediction mode for a current block, generating a first intra-prediction block corresponding to the first intra-prediction mode, deriving a second intra-prediction mode for the current block, generating a second intra-prediction block corresponding to the second intra-prediction mode, and generating a final intra-prediction block by using a weighted sum of the first intra-prediction block and the second intra-prediction block.