公开(公告)号：US20240323431A1

公开(公告)日：2024-09-26

申请号：US18734611

申请日：2024-06-05

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 ,  H04N19/124 ,  H04N19/13 ,  H04N19/176

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：US20240022730A1

公开(公告)日：2024-01-18

申请号：US18476044

申请日：2023-09-27

Applicant: INTELLECTUAL DISCOVERY CO., LTD.

Inventor： Bae Keun LEE ,  Dong San JUN

IPC: H04N19/139 ,  H04N19/176 ,  H04N19/46 ,  H04N19/513

CPC classification number: H04N19/139 ,  H04N19/176 ,  H04N19/46 ,  H04N19/513

Abstract: The image encoding/decoding method and device according to the present invention can construct a merge candidate list of a current block, derive motion information of the current block on the basis of the merge candidate list and a merge index of the current block, derive a motion vector difference of the current block, correct a motion vector of the current block by means of the motion vector difference, and carry out motion compensation on the current block by means of the corrected motion vector.

公开(公告)号：US20230353776A1

公开(公告)日：2023-11-02

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: H04N19/513 ,  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：US20220070468A1

公开(公告)日：2022-03-03

申请号：US17418540

申请日：2019-12-27

Applicant: INTELLECTUAL DISCOVERY CO., LTD.

Inventor： Bae Keun LEE ,  Dong San JUN

IPC: H04N19/139 ,  H04N19/176 ,  H04N19/513 ,  H04N19/46

Abstract: The image encoding/decoding method and device according to the present invention can construct a merge candidate list of a current block, derive motion information of the current block on the basis of the merge candidate list and a merge index of the current block, derive a motion vector difference of the current block, correct a motion vector of the current block by means of the motion vector difference, and carry out motion compensation on the current block by means of the corrected motion vector.

公开(公告)号：US20220070452A1

公开(公告)日：2022-03-03

申请号：US17418583

申请日：2019-12-27

Applicant: INTELLECTUAL DISCOVERY CO., LTD.

Inventor： Bae Keun LEE ,  Dong San JUN

IPC: H04N19/11 ,  H04N19/176 ,  H04N19/186 ,  H04N19/105

Abstract: The video encoding/decoding method and device according to the present invention can determine an intra prediction mode of a chroma block, specify a luminance area for inter-component reference of the chroma block, downsample the specified luminance area, derive parameters for the inter-component reference of the chroma block, apply the parameters to the downsampled luminance area, and thereby predict the chroma block.

公开(公告)号：US20250106409A1

公开(公告)日：2025-03-27

申请号：US18976201

申请日：2024-12-10

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: H04N19/176 ,  H04N19/119 ,  H04N19/159 ,  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：US20240297994A1

公开(公告)日：2024-09-05

申请号：US18651530

申请日：2024-04-30

Applicant: INTELLECTUAL DISCOVERY CO., LTD.

Inventor： Bae Keun LEE ,  Dong San JUN

IPC: H04N19/119 ,  G06V10/20 ,  G16H30/40 ,  G16H70/60 ,  H04N19/105 ,  H04N19/137 ,  H04N19/159 ,  H04N19/176 ,  H04W4/80

CPC classification number: H04N19/119 ,  G06V10/255 ,  G16H30/40 ,  G16H70/60 ,  H04N19/105 ,  H04N19/137 ,  H04N19/159 ,  H04N19/176 ,  H04W4/80 ,  G06F2218/10

Abstract: A video signal encoding/decoding method and apparatus according to the present invention divide a current block into two prediction units, construct a list of merge candidates for the current block, derive motion information of the current block using a merge candidate index and the list of merge candidates of the current block, and perform inter-prediction of the current block using the derived motion information.

公开(公告)号：US20240236307A9

公开(公告)日：2024-07-11

申请号：US18403620

申请日：2024-01-03

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: An image encoding/decoding method is disclosed. A method of decoding an image, the method comprising, 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：US20240196010A1

公开(公告)日：2024-06-13

申请号：US18586194

申请日：2024-02-23

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: H04N19/593 ,  H04N19/176 ,  H04N19/184

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：US20230353735A1

公开(公告)日：2023-11-02

申请号：US18346728

申请日：2023-07-03

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: H04N19/117 ,  H04N19/105 ,  H04N19/14 ,  H04N19/159 ,  H04N19/176

CPC classification number: H04N19/117 ,  H04N19/105 ,  H04N19/14 ,  H04N19/159 ,  H04N19/176

Abstract: The present invention relates to an image encoding and decoding method. An image decoding method for the same includes: determining a reference sample of a current block; performing filtering for the reference sample on the basis of a feature of an area where the reference sample is included; and performing intra-prediction by using the reference sample for which filtering is performed.