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.

公开(公告)号：US20230344992A1

公开(公告)日：2023-10-26

申请号：US18346735

申请日：2023-07-03

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

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

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.