公开(公告)号：US20240333959A1

公开(公告)日：2024-10-03

申请号：US18676310

申请日：2024-05-28

Applicant: Electronics and Telecommunications Research Institute

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

IPC: H04N19/513 ,  H04N19/105 ,  H04N19/109 ,  H04N19/139 ,  H04N19/172 ,  H04N19/176 ,  H04N19/184 ,  H04N19/31 ,  H04N19/43 ,  H04N19/85

CPC classification number: H04N19/513 ,  H04N19/105 ,  H04N19/109 ,  H04N19/139 ,  H04N19/172 ,  H04N19/176 ,  H04N19/184 ,  H04N19/31 ,  H04N19/43 ,  H04N19/85

Abstract: The present specification discloses a method of decoding an image. The method includes obtaining a motion vector of a collocated block included in a reference picture of a current block in a temporal motion buffer; changing a format of the obtained motion vector; and deriving the motion vector, in which the format is changed, into a temporal motion vector of the current block.

公开(公告)号：US20240259593A1

公开(公告)日：2024-08-01

申请号：US18626271

申请日：2024-04-03

Applicant: Electronics and Telecommunications Research Institute

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

IPC: H04N19/593 ,  H04N19/105 ,  H04N19/119 ,  H04N19/12 ,  H04N19/132 ,  H04N19/159 ,  H04N19/169 ,  H04N19/176 ,  H04N19/186 ,  H04N19/423 ,  H04N19/503

CPC classification number: H04N19/593 ,  H04N19/105 ,  H04N19/119 ,  H04N19/12 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/1883 ,  H04N19/423 ,  H04N19/503

Abstract: An image encoding/decoding method and apparatus are disclosed. The image decoding method includes acquiring prediction mode information of a current block from a bitstream, deriving a prediction mode of the current block using the prediction mode information of the current block, acquiring information indicating whether a residual signal of a transform block for the current block is present based on at least one of information on partitioning of the current block or the prediction mode of the current block, and reconstructing the current block based on the information indicating whether the residual signal of the transform block is present.

公开(公告)号：US20240259584A1

公开(公告)日：2024-08-01

申请号：US18630834

申请日：2024-04-09

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sung Chang LIM ,  Hui Yong KIM ,  Se Yoon JEONG ,  Suk Hee CHO ,  Dong San JUN ,  Jong Ho KIM ,  Ha Hyun LEE ,  Jin Ho LEE ,  Jin Soo CHOI ,  Jin Woong KIM

IPC: H04N19/513 ,  H04N19/426 ,  H04N19/44 ,  H04N19/61

CPC classification number: H04N19/513 ,  H04N19/426 ,  H04N19/44 ,  H04N19/61

Abstract: The present invention relates to image processing, and more particularly, to a video coding/decoding method using a clipped motion vector and an apparatus thereof. An embodiment of the present invention relates to a method of decoding an image. The method includes clipping a motion vector of a reference picture in a predetermined dynamic range to generate a clipped motion vector, storing the clipped motion vector in a buffer, deriving a motion vector of a coding treeblock using the motion vector stored in the buffer, and performing inter prediction decoding process using the motion vector of the coding treeblock. According to the exemplary embodiment of the present invention, a size of a memory required for storing motion vectors may be reduced.

公开(公告)号：US20240205457A1

公开(公告)日：2024-06-20

申请号：US18435936

申请日：2024-02-07

Applicant: Electronics and Telecommunications Research Institute

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

IPC: H04N19/61 ,  H04N19/11 ,  H04N19/176 ,  H04N19/593 ,  H04N19/91

CPC classification number: H04N19/61 ,  H04N19/11 ,  H04N19/176 ,  H04N19/593 ,  H04N19/91

Abstract: Disclosed herein is a video decoding method including: obtaining a transform skip mode flag indicating whether or not a transform skip mode is applied to a current block; based on the transform skip mode flag, when a transform skip mode is applied to the current block, determining that secondary transform/inverse transform is not applied to the current block; and, according to the transform skip mode flag, when a transform skip mode is not applied to the current block, obtaining a transform matrix index for secondary transform/inverse transform of the current block and, according to the transform matrix index, determining whether or not secondary transform/inverse transform is applied to the current block.

公开(公告)号：US20240187644A1

公开(公告)日：2024-06-06

申请号：US18545040

申请日：2023-12-19

Applicant: Electronics and Telecommunications Research Institute

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

IPC: H04N19/583 ,  H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/196 ,  H04N19/463 ,  H04N19/51 ,  H04N19/513 ,  H04N19/56 ,  H04N19/577 ,  H04N19/96

CPC classification number: H04N19/583 ,  H04N19/105 ,  H04N19/176 ,  H04N19/51 ,  H04N19/96 ,  H04N19/132 ,  H04N19/197 ,  H04N19/463 ,  H04N19/513 ,  H04N19/56 ,  H04N19/577

Abstract: The present invention relates to a method for encoding/decoding a video. To this end, the method for decoding a video may include: generating a merge candidate list of a current block including at least one merge candidate corresponding to each of a plurality of reference picture lists; determining at least one piece of motion information by using the merge candidate list; and generating a prediction block of the current block by using the determined at least one piece of motion information.

公开(公告)号：US20240155110A1

公开(公告)日：2024-05-09

申请号：US18411515

申请日：2024-01-12

Applicant: Electronics and Telecommunications Research Institute

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

IPC: H04N19/105 ,  H04N19/119 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70 ,  H04N19/96

CPC classification number: H04N19/105 ,  H04N19/119 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70 ,  H04N19/96

Abstract: The present invention relates to an image encoding method and an image decoding method. The image decoding method includes partitioning a picture into a plurality of coding units, constructing a coding unit group including at least one coding unit of the plurality of coding units, obtaining coding information in units of one coding unit group, and decoding at least one coding unit of the plurality of coding units included in the coding unit group by using the obtained coding information.

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：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.