公开(公告)号：US20240098311A1

公开(公告)日：2024-03-21

申请号：US18513906

申请日：2023-11-20

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY

Inventor： Sung Chang LIM ,  Jung Won KANG ,  Hyun Suk KO ,  Jin Ho LEE ,  Dong San JUN ,  Ha Hyun LEE ,  Seung Hyun CHO ,  Hui Yong KIM ,  Jin Soo CHOI ,  Yung Lyul LEE ,  Jun Woo CHOI

IPC: H04N19/91 ,  H04N19/146 ,  H04N19/149 ,  H04N19/159 ,  H04N19/176 ,  H04N19/182 ,  H04N19/44

CPC classification number: H04N19/91 ,  H04N19/146 ,  H04N19/149 ,  H04N19/159 ,  H04N19/176 ,  H04N19/182 ,  H04N19/44

Abstract: The present invention relates to an image encoding/decoding method and apparatus. An image encoding method according to the present invention may comprise generating a transform block by performing at least one of transform and quantization; grouping at least one coefficient included in the transform block into at least one coefficient group (CG); scanning at least one coefficient included in the coefficient group; and encoding the at least one coefficient.

公开(公告)号：US20240073416A1

公开(公告)日：2024-02-29

申请号：US18502708

申请日：2023-11-06

Applicant: Electronics and Telecommunications Research Institute ,  Kwangwoon University Industry-Academic Collaboration Foundation ,  University-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 ,  H04N19/109 ,  H04N19/132 ,  H04N19/159 ,  H04N19/17 ,  H04N19/174 ,  H04N19/176 ,  H04N19/192 ,  H04N19/46 ,  H04N19/50 ,  H04N19/593 ,  H04N19/82

CPC classification number: H04N19/117 ,  H04N19/109 ,  H04N19/132 ,  H04N19/159 ,  H04N19/17 ,  H04N19/174 ,  H04N19/176 ,  H04N19/192 ,  H04N19/46 ,  H04N19/50 ,  H04N19/593 ,  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：US20240064301A1

公开(公告)日：2024-02-22

申请号：US18501251

申请日：2023-11-03

Applicant: Electronics and Telecommunications Research Institute ,  RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY

Inventor： Jung Won KANG ,  Ha Hyun LEE ,  Sung Chang LIM ,  Jin Ho LEE ,  Hui Yong KIM ,  Byeung Woo JEON ,  Jee Yoon PARK

IPC: H04N19/12 ,  H04N19/176 ,  H04N19/46 ,  H04N19/61

CPC classification number: H04N19/12 ,  H04N19/176 ,  H04N19/46 ,  H04N19/619

Abstract: The present specification discloses a method of decoding an image. The method of decoding an image according to the method includes: obtaining transform skip information of a current block from a bitstream; obtaining multiple transform selection information of the current block on the basis of the transform skip information from the bitstream; and performing inverse transform on the current block on the basis of the multiple transform selection information, wherein the multiple transform selection information is used to set each of a horizontal transform type and a vertical transform type.

公开(公告)号：US20240064291A1

公开(公告)日：2024-02-22

申请号：US18498663

申请日：2023-10-31

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

Inventor： Hui Yong KIM ,  Gwang Hoon PARK ,  Kyung Yong KIM ,  Sang Min KIM ,  Sung Chang LIM ,  Jin Ho LEE ,  Jin Soo CHOI ,  Jin Woong KIM

IPC: H04N19/105 ,  H04N19/136 ,  H04N19/176 ,  H04N19/503 ,  H04N19/159 ,  H04N19/513 ,  H04N19/139 ,  H04N19/103 ,  H04N19/52

CPC classification number: H04N19/105 ,  H04N19/136 ,  H04N19/176 ,  H04N19/503 ,  H04N19/159 ,  H04N19/513 ,  H04N19/139 ,  H04N19/103 ,  H04N19/52 ,  H04N19/172

Abstract: The present invention relates to a method and apparatus for setting a reference picture index of a temporal merging candidate. An inter-picture prediction method using a temporal merging candidate can include the steps of: determining a reference picture index for a current block; and inducing a temporal merging candidate block of the current block and calculating a temporal merging candidate from the temporal merging candidate block, wherein the reference picture index of the temporal merging candidate can be calculated regardless of whether a block other than the current block is decoded. Accordingly, a video processing speed can be increased and video processing complexity can be reduced.

公开(公告)号：US20240031584A1

公开(公告)日：2024-01-25

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

CPC classification number: 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：US20240031559A1

公开(公告)日：2024-01-25

申请号：US18479313

申请日：2023-10-02

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

Inventor： Jung Won KANG ,  Hyun Suk KO ,  Sung Chang LIM ,  Jin Ho LEE ,  Ha Hyun LEE ,  Dong San JUN ,  Seung Hyun CHO ,  Hui Yong KIM ,  Jin Soo CHOI ,  Gwang Hoon PARK ,  Tae Hyun KIM ,  Dae Young LEE

IPC: H04N19/105 ,  H04N19/117 ,  H04N19/132 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/182 ,  H04N19/46 ,  H04N19/52

CPC classification number: H04N19/105 ,  H04N19/117 ,  H04N19/132 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/182 ,  H04N19/46 ,  H04N19/52

Abstract: An image encoding/decoding method and apparatus are provided. An image encoding method performed by an image encoding apparatus may comprise determining an intra-prediction mode of a current block, configuring a reference sample of intra prediction by using at least one of a neighbor pixel of the current block in a current picture and a pixel of a reference picture, and performing intra prediction for the current block based on the intra-prediction mode and the reference sample.

公开(公告)号：US20230403401A1

公开(公告)日：2023-12-14

申请号：US18456723

申请日：2023-08-28

Applicant: Electronics and Telecommunications Research Institute

Inventor： Ha Hyun LEE ,  Jung Won KANG ,  Jin Ho LEE ,  Jin Soo CHOI ,  Jin Woong KIM

IPC: H04N19/187 ,  H04N19/176 ,  H04N19/105 ,  H04N19/52 ,  H04N19/70 ,  H04N19/463 ,  H04N19/33 ,  H04N19/31

CPC classification number: H04N19/187 ,  H04N19/176 ,  H04N19/105 ,  H04N19/52 ,  H04N19/70 ,  H04N19/463 ,  H04N19/33 ,  H04N19/31

Abstract: Disclosed are a method and an apparatus for image encoding/decoding that support a plurality of layers. The method for image decoding that supports a plurality of layers includes decoding information of a first layer which a picture of a second layer including a current decoding target block refers to; mapping the information of the first layer to a picture size of the second layer, configuring a reference picture list for the picture of the second layer by adding the mapped information of the first layer and generating prediction samples of the current decoding target block by predicting the current decoding target block of the second layer based on the reference picture list, and the information of the first layer includes at least one of a sample value and motion information of the first layer picture.

公开(公告)号：US20230362352A1

公开(公告)日：2023-11-09

申请号：US18223961

申请日：2023-07-19

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

Inventor： Ha Hyun LEE ,  Jung Won KANG ,  Sung Chang LIM ,  Jin Ho LEE ,  Hui Yong KIM ,  Hae Chul CHOI ,  Aram BACK ,  Dae Hyeok GWON

IPC: H04N19/82 ,  H04N19/105 ,  H04N19/159 ,  H04N19/117 ,  H04N19/176 ,  H04N19/70

CPC classification number: H04N19/105 ,  H04N19/117 ,  H04N19/159 ,  H04N19/176 ,  H04N19/70 ,  H04N19/82

Abstract: An image encoding/decoding method is disclosed. Present invention of the method of decoding an image comprises determining a prediction mode for a current block and performing prediction on the current block on the basis of the determined prediction mode.

公开(公告)号：US20230344994A1

公开(公告)日：2023-10-26

申请号：US18345350

申请日：2023-06-30

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jin Ho LEE ,  Hui Yong KIM ,  Sung Chang LIM ,  Jin Soo CHOI ,  Jin Woong KIM

IPC: H04N19/11 ,  H04N19/107 ,  H04N19/176 ,  H04N19/184 ,  H04N19/44 ,  H04N19/91

CPC classification number: H04N19/11 ,  H04N19/107 ,  H04N19/176 ,  H04N19/184 ,  H04N19/44 ,  H04N19/91

Abstract: An image decoding method, according to the present invention, includes the steps of: deriving an MPM candidate mode from neighboring blocks adjacent to a target block to be decoded; generating an MPM list using the MPM candidate mode derived from the neighboring blocks; and deriving an intra prediction mode for the target block to be decoded using the generated MPM list. According to the present invention, image compression efficiency can be improved.

公开(公告)号：US20230308673A1

公开(公告)日：2023-09-28

申请号：US18327160

申请日：2023-06-01

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

CPC classification number: 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.