公开(公告)号：US20220279161A1

公开(公告)日：2022-09-01

申请号：US17608399

申请日：2020-04-29

Applicant: Electronics and Telecommunications Research Institute ,  CHIPS&MEDIA, INC

Inventor： Sung Chang LIM ,  Jung Won KANG ,  Ha Hyun LEE ,  Jin Ho LEE ,  Hui Yong KIM ,  Dae Yeon KIM

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/186 ,  H04N19/169 ,  H04N19/119 ,  H04N19/80 ,  H04N19/132

Abstract: Disclosed herein is an image encoding/decoding method. A method of decoding an image includes determining an intra prediction mode of a current block, and generating a prediction block of the current block, by performing prediction based on the intra prediction mode. When the intra prediction mode of the current block is a matrix-based intra prediction (MIP) mode, a length of a reference sample used for intra prediction is derived based on a length of the current block.

公开(公告)号：US20220256187A1

公开(公告)日：2022-08-11

申请号：US17723725

申请日：2022-04-19

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

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

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：US20220248029A1

公开(公告)日：2022-08-04

申请号：US17613405

申请日：2020-06-19

Applicant: Electronics and Telecommunications Research Institute

Inventor： Woong LIM ,  Gun BANG ,  Hui Yong KIM

IPC: H04N19/14 ,  H04N19/169 ,  H04N19/176 ,  H04N19/174

Abstract: Disclosed herein are an image encoding/decoding method and apparatus, and a recording medium storing a bitstream. The image decoding method according to the present invention includes: deriving slice mode information for at least one slice comprised in a current picture; deriving information on the number of slices based on the slice mode information; deriving tile information of a current slice based on the information on the number of slices; and, decoding the current slice based on the tile information. Herein, the tile information includes tile index presence information and tile index difference value information, and the tile index difference value information is not signaled for a last slice included in the current picture.

公开(公告)号：US20220248026A1

公开(公告)日：2022-08-04

申请号：US17612738

申请日：2020-06-16

Applicant: Electronics and Telecommunications Research Institute

Inventor： Ha Hyun LEE ,  Jung Won KANG ,  Sung Chang LIM ,  Jin Ho LEE ,  Hui Yong KIM

IPC: H04N19/132 ,  H04N19/105 ,  H04N19/119 ,  H04N19/137 ,  H04N19/176

Abstract: Disclosed herein are a video encoding/decoding method and apparatus. The video decoding method of the present disclosure includes: obtaining block partitioning information of a current block; based on the block partitioning information, partitioning the current block into a first sub-block and a second sub-block; deriving motion information of the first sub-block and notion information of the second sub-block respectively; based on the notion information of the first sub-block and the motion information of the second sub-block, generating a prediction sample of the first sub-block and a prediction sample of the second sub-block respectively; and through a weighted-sum of the prediction sample of the first sub-block and the prediction sample of the second sub-block, generating a prediction sample of the current block. Herein, the block partitioning information is index information indicating an index of a table including information indicating a plurality of predefined asymmetric partition shapes.

公开(公告)号：US20220232211A1

公开(公告)日：2022-07-21

申请号：US17714009

申请日：2022-04-05

Applicant: Electronics and Telecommunications Research Institute

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 ,  H04N19/82 ,  H04N19/52

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：US20220232206A1

公开(公告)日：2022-07-21

申请号：US17612917

申请日：2020-06-08

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jin Ho LEE ,  Jung Won KANG ,  Ha Hyun LEE ,  Sung Chang LIM ,  Hui Yong KIM

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

Abstract: Disclosed herein are a method and an apparatus for encoding/decoding an image. The image decoding method according to the present invention includes obtaining prediction information of a current block from a bitstream and, by performing prediction based on the prediction information, generating a prediction block of the current block. Herein, the prediction information includes split prediction information of the current block. The generating of the prediction block includes obtaining a reference sample from a neighboring block of the current block, applying an interpolation filter to the reference sample, and generating the prediction block by using the reference sample to which the interpolation filter is applied. The interpolation filter is determined based on the split prediction information of the current block.

公开(公告)号：US20220224896A1

公开(公告)日：2022-07-14

申请号：US17711477

申请日：2022-04-01

Applicant: Electronics and Telecommunications Research Institute ,  Kwangwoon University Industry-Academic Collaboration Foundation ,  Universily-lndustry Cooperation Group of Kyung Hee University

Inventor： Sung Chang LIM ,  Ha Hyun LEE ,  Se Yoon JEONG ,  Hui Yong KIM ,  Suk Hee CHO ,  Jong Ho KIM ,  Jin Ho LEE ,  Jin Soo CHOI ,  Jin Woong KIM ,  Chie Teuk AHN ,  Dong Gyu SIM ,  Seoung Jun OH ,  Gwang Hoon PARK ,  Sea Nae PARK ,  Chan Woong JEON

IPC: H04N19/117 ,  H04N19/46 ,  H04N19/593 ,  H04N19/132 ,  H04N19/176 ,  H04N19/17 ,  H04N19/50 ,  H04N19/109 ,  H04N19/159 ,  H04N19/174 ,  H04N19/192 ,  H04N19/82

Abstract: The present invention relates to an apparatus and method for encoding and decoding an image by skip encoding. The image-encoding method by skip encoding, which performs intra-prediction, comprises: performing a filtering operation on the signal which is reconstructed prior to an encoding object signal in an encoding object image; using the filtered reconstructed signal to generate a prediction signal for the encoding object signal; setting the generated prediction signal as a reconstruction signal for the encoding object signal; and not encoding the residual signal which can be generated on the basis of the difference between the encoding object signal and the prediction signal, thereby performing skip encoding on the encoding object signal.

公开(公告)号：US20220159237A1

公开(公告)日：2022-05-19

申请号：US17590161

申请日：2022-02-01

Applicant: Electronics and Telecommunications Research Institute ,  University-Industry Cooperation Group of Kyung Hee University

Inventor： Se Yoon JEONG ,  Hui Yong KIM ,  Sung Chang LIM ,  Jin Ho LEE ,  Ha Hyun LEE ,  Jong Ho KIM ,  Jin Soo CHOI ,  Jin Woong KIM ,  Chie Teuk AHN ,  Gwang Hoon PARK ,  Kyung Yong KIM ,  Han Soo LEE ,  Tae Ryong KIM

IPC: H04N19/10 ,  H04N19/105 ,  H04N19/136 ,  H04N19/196

Abstract: A method for coding image information includes generating prediction information by predicting information on a current coding unit, and determining whether the information on the current coding unit is the same as the prediction information. When the information on the current coding unit is the same as the prediction information, a flag indicating that the information on the current coding unit is the same as the prediction information is coded and transmitted. When the information on the current coding unit is not the same as the prediction information, a flag indicating that the information on the current coding unit is not the same as the prediction information and the information on the current coding unit are coded and transmitted. At the generating of the prediction information, the prediction information is generated by using the information on the coding unit neighboring to the current coding unit

公开(公告)号：US20220094958A1

公开(公告)日：2022-03-24

申请号：US17540290

申请日：2021-12-02

Applicant: Electronics and Telecommunications Research Institute ,  KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Jong Ho KIM ,  Hui Yong KIM ,  Se Yoon JEONG ,  Sung Chang LIM ,  Ha Hyun LEE ,  Jin Ho LEE ,  Suk Hee CHO ,  Jin Soo CHOI ,  Jin Woong KIM ,  Chie Teuk AHN ,  Mun Churl KIM ,  Bum Shik LEE

IPC: H04N19/44 ,  H04N19/70 ,  H04N19/46 ,  H04N19/593 ,  H04N19/60 ,  H04N19/18 ,  H04N19/64

Abstract: Disclosed decoding method of the intra prediction mode comprises the steps of: determining whether an intra prediction mode of a present prediction unit is the same as a first candidate intra prediction mode or as a second candidate intra prediction mode on the basis of 1-bit information; and determining, among said first candidate intra prediction mode and said second candidate intra prediction mode, which candidate intra prediction mode is the same as the intra prediction mode of said present prediction unit on the basis of additional 1-bit information, if the intra prediction mode of the present prediction unit is the same as at least either the first candidate intra prediction mode or the second candidate intra prediction mode, and decoding the intra prediction mode of the present prediction unit.

公开(公告)号：US20220086486A1

公开(公告)日：2022-03-17

申请号：US17420106

申请日：2019-12-27

Applicant: Electronics and Telecommunications Research Institute ,  INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY ,  CHIPS&MEDIA, INC ,  INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY

Inventor： Sung Chang LIM ,  Jung Won KANG ,  Ha Hyun LEE ,  Jin Ho LEE ,  Hui Yong KIM ,  Yung Lyul LEE ,  Ji Yeon JUNG ,  Nam Uk KIM ,  Myung Jun KIM ,  Yang Woo KIM ,  Dae Yeon KIM ,  Jae Gon KIM

IPC: H04N19/593 ,  H04N19/107 ,  H04N19/196 ,  H04N19/176 ,  H04N19/159 ,  H04N19/127 ,  H04N19/503

Abstract: Disclosed herein is a method of decoding an image. The method includes generating an inter prediction block by performing inter prediction with respect to a current block, generating an intra prediction block by performing intra prediction with respect to the current block, determining a first weight and a second weight, and generating a final prediction block by respectively applying the first weight and the second weight to the inter prediction block and the intra prediction block. The generating of the intra prediction block includes generating the intra prediction block using a predefined intra prediction mode.