公开(公告)号：US12262003B2

公开(公告)日：2025-03-25

申请号：US18344160

申请日：2023-06-29

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

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

IPC: H04N19/11 ,  H04N19/105 ,  H04N19/119 ,  H04N19/176 ,  H04N19/96

Abstract: An image encoding/decoding method and apparatus for performing intra prediction are provided. An image decoding method of the present invention comprises deriving an intra-prediction mode for a current block, determining whether or not a left boundary or an upper boundary of the current block is a boundary of a predetermined image region, configuring a reference sample by using at least one reconstructed sample included in at least one reconstructed sample line adjacent to the current block based on the determination result, and performing intra-prediction for the current block based on the intra-prediction mode and the reference sample.

公开(公告)号：US12212739B2

公开(公告)日：2025-01-28

申请号：US18475768

申请日：2023-09-27

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sung Chang Lim ,  Jong Ho Kim ,  Hae Chul Choi ,  Hui Yong Kim ,  Ha Hyun Lee ,  Jin Ho Lee ,  Se Yoon Jeong ,  Suk Hee Cho ,  Jin Soo Choi ,  Jin Woo Hong ,  Jin Woong Kim

IPC: H04N19/105 ,  H04N19/11 ,  H04N19/157 ,  H04N19/176 ,  H04N19/46 ,  H04N19/503 ,  H04N19/593

Abstract: Provided are an image encoding method and device. When carrying out image encoding for a block within a slice, at least one block in a restored block of the slice is set as a reference block. When this is done, the encoding parameters of the reference block are distinguished, and the block to be encoded is encoded adaptively based on the encoding parameters.

公开(公告)号：US12206843B2

公开(公告)日：2025-01-21

申请号：US18475786

申请日：2023-09-27

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sung Chang Lim ,  Jong Ho Kim ,  Hae Chul Choi ,  Hui Yong Kim ,  Ha Hyun Lee ,  Jin Ho Lee ,  Se Yoon Jeong ,  Suk Hee Cho ,  Jin Soo Choi ,  Jin Woo Hong ,  Jin Woong Kim

IPC: H04N19/105 ,  H04N19/11 ,  H04N19/157 ,  H04N19/176 ,  H04N19/46 ,  H04N19/503 ,  H04N19/593

Abstract: Provided are an image encoding method and device. When carrying out image encoding for a block within a slice, at least one block in a restored block of the slice is set as a reference block. When this is done, the encoding parameters of the reference block are distinguished, and the block to be encoded is encoded adaptively based on the encoding parameters.

公开(公告)号：US12166974B2

公开(公告)日：2024-12-10

申请号：US17602690

申请日：2020-04-10

Applicant: Electronics and Telecommunications Research Institute ,  UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY

Inventor： Jung Won Kang ,  Ha Hyun Lee ,  Sung Chang Lim ,  Jin Ho Lee ,  Hui Yong Kim ,  Gwang Hoon Park ,  Tae Hyun Kim ,  Dae Young Lee ,  Woo Woen Gwun ,  Won Jun Lee

IPC: H04N19/11 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/184

Abstract: An image encoding/decoding method and apparatus is provided. The method of decoding an image includes decoding at least one of prediction mode information of a neighbor block of a current block and length information of the current block, deriving an intra prediction mode of the current block into a predetermined mode using the decoded information, and reconstructing the current block based on the intra prediction mode of the current block.

公开(公告)号：US12160589B2

公开(公告)日：2024-12-03

申请号：US18115306

申请日：2023-02-28

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jin Ho Lee ,  Hui Yong Kim ,  Sung Chang Lim ,  Jong Ho Kim ,  Ha Hyun Lee ,  Se Yoon Jeong ,  Suk Hee Cho ,  Jin Soo Choi ,  Jin Woong Kim ,  Chie Teuk Ahn

IPC: H04N19/159 ,  H04N19/105 ,  H04N19/117 ,  H04N19/126 ,  H04N19/13 ,  H04N19/43 ,  H04N19/50 ,  H04N19/593 ,  H04N19/61 ,  H04N19/176 ,  H04N19/182

Abstract: An intra prediction method according to the present invention comprises the following steps: performing a directional prediction using at least one of a neighboring pixel of a current block and a left upper corner pixel positioned at a left upper corner of the current block so as to obtain a first prediction value for the current block; obtaining a second prediction value for the current block using the reference sample positioned in the current block; and weighted summing the first prediction value and the second prediction value using a weighting matrix so as to obtain a final prediction value for the current block. According to the present invention, image encoding/decoding efficiency may be improved.

公开(公告)号：US12149713B2

公开(公告)日：2024-11-19

申请号：US18374527

申请日：2023-09-28

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sung Chang Lim ,  Hui Yong Kim ,  Se Yoon Jeong ,  Jong Ho Kim ,  Ha Hyun Lee ,  Jin Ho Lee ,  Jin Soo Choi ,  Jin Woong Kim

IPC: H04N19/176 ,  H04N19/129 ,  H04N19/136

Abstract: Provided is a transform coefficient scan method including: determining a reference transform block for a decoding target block; deriving a scanning map of the decoding target block using scanning information of the reference transform block; and performing inverse scanning on a transform coefficient of the decoding target block using the derived scanning map. According to the present invention, picture encoding/decoding efficiency may be improved.

公开(公告)号：US12137229B2

公开(公告)日：2024-11-05

申请号：US18499795

申请日：2023-11-01

Applicant: Electronics and Telecommunications Research Institute

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

IPC: H04N19/139 ,  H04N19/159 ,  H04N19/167 ,  H04N19/176 ,  H04N19/593

Abstract: An image decoding method is disclosed in the present specification. An image decoding method according to the present invention may include: determining a position of a co-located block of a current block within a co-located picture (co-located picture); determining a representative motion vector of the current block by using motion information at the position of the co-located block; and deriving motion information on a sub-block included in the current block by using the representative motion vector.

公开(公告)号：US12069299B2

公开(公告)日：2024-08-20

申请号：US17437356

申请日：2020-03-06

Applicant: Electronics and Telecommunications Research Institute

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

IPC: H04N19/593 ,  H04N19/105 ,  H04N19/139 ,  H04N19/169 ,  H04N19/176 ,  H04N19/52

CPC classification number: H04N19/593 ,  H04N19/105 ,  H04N19/139 ,  H04N19/176 ,  H04N19/1883 ,  H04N19/52

Abstract: Disclosed herein is an image encoding/decoding method. The image decoding method includes a step of comparing block vector information included in a history-based candidate list with a block vector of a neighboring block used as an intra block copy (IBC) block vector candidate for IBC prediction of a current block, and a step of adding the block vector information included in the history-based candidate list to an IBC block vector candidate list based on the comparing. The step of comparing is performed only with respect to a candidate lastly included in the history-based candidate list.

公开(公告)号：US12069258B2

公开(公告)日：2024-08-20

申请号：US17876620

申请日：2022-07-29

Applicant: Electronics and Telecommunications Research Institute ,  INDUSTRY-UNIVERSITY COOPERATION FOUNDATION OF KOREA AEROSPACE UNIVERSITY ,  HANBAT NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION

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

IPC: H04N19/46 ,  H04N19/105 ,  H04N19/119 ,  H04N19/176 ,  H04N19/186

CPC classification number: H04N19/119 ,  H04N19/105 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46

Abstract: An image encoding/decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus of the present invention may comprise decoding an indicator indicating whether or not partition information of a current block is derived from partition information of a corresponding block of the current block, obtaining the partition information of the current block based on the decoded indicator, and partitioning the current block based on the obtained partition information.

公开(公告)号：US12069247B2

公开(公告)日：2024-08-20

申请号：US18110702

申请日：2023-02-16

Applicant: Electronics and Telecommunications Research Institute ,  UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY

Inventor： Jung Won Kang ,  Ha Hyun Lee ,  Sung Chang Lim ,  Jin Ho Lee ,  Hui Yong Kim ,  Gwang Hoon Park ,  Tae Hyun Kim ,  Dae Young Lee

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/423 ,  H04N19/46 ,  H04N19/51

CPC classification number: H04N19/105 ,  H04N19/176 ,  H04N19/423 ,  H04N19/46 ,  H04N19/51

Abstract: An image decoding method is disclosed in the present specification. An image decoding method according to the present invention may comprise deriving a candidate list for inter-prediction of a current block, deriving motion information of the current block by using the candidate list, deriving a cumulative coding information candidate by using the motion information of the current block, inserting the derived cumulative coding information candidate into a cumulative coding information candidate list and updating the candidate list by using the cumulative coding information candidate list, wherein the updated candidate list is used for inter-prediction of a block to be decoded after the current block.