Patents by Inventor Dong-San Jun

Dong-San Jun has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and device for encoding/decoding image using geometrically modified picture
    Patent number: 11758128
    Abstract: The present invention relates to a method and apparatus for video encoding/decoding by using a geometric modified picture. The encoding method according to the present invention includes: generating a geometric modified picture by geometrically modifying a reference picture; and generating a first prediction block of a current block by performing inter prediction referencing the geometric modified picture.
    Type: Grant
    Filed: August 17, 2022
    Date of Patent: September 12, 2023
    Assignees: Electronics and Telecommunications Research Institute, University-Industry Cooperation Group of Kyung Hee University
    Inventors: Jung Won Kang, Hyun Suk Ko, Sung Chang Lim, Jin Ho Lee, Dong San Jun, Hui Yong Kim, Gwang Hoon Park, Jin Soo Choi, Tae Hyun Kim, Dae Young Lee, Young Su Heo
  • METHOD AND APPARATUS FOR IMAGE ENCODING/DECODING
    Publication number: 20230276046
    Abstract: The present invention provides a method and apparatus for encoding/decoding an image to enhance inter prediction. According to the present invention, the method includes: determining a first reference picture and a second reference picture of a current block; determining both a first reference block in the first reference picture and a second reference block in the second reference picture; partitioning the current block into a plurality of sub blocks; and obtaining a prediction block of each of the sub blocks on the basis of reference candidate block index information of each of the sub blocks.
    Type: Application
    Filed: May 4, 2023
    Publication date: August 31, 2023
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Dong San JUN, Jung Won KANG, Sung Chang LIM, Hyun Suk KO, Jin Ho LEE, Hui Yong KIM, Jin Soo CHOI
  • Method and device for encoding/decoding image, and recording medium in which bitstream is stored
    Patent number: 11743456
    Abstract: An image encoding/decoding method and apparatus for performing intra prediction using a plurality of reference sample lines are provided. An image decoding method may comprise configuring a plurality of reference sample lines, reconstructing an intra prediction mode of a current block, and performing intra prediction for the current block based on the intra prediction mode and the plurality of reference sample lines.
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: August 29, 2023
    Inventors: Jin Ho Lee, Jung Won Kang, Hyun Suk Ko, Sung Chang Lim, Ha Hyun Lee, Dong San Jun, Hui Yong Kim
  • Image encoding/decoding method and recording medium for same
    Patent number: 11743470
    Abstract: The present invention relates to a method of performing motion compensation by using motion vector prediction. To this end, a method of decoding an image may include: generating multiple motion vector candidate lists according to an inter-prediction direction of a current block; deriving multiple motion vectors for the current block by using the multiple motion vector candidate lists; determining multiple prediction blocks for the current block by using the multiple motion vectors; and obtaining a final prediction block for the current block based on the multiple prediction blocks.
    Type: Grant
    Filed: October 27, 2021
    Date of Patent: August 29, 2023
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Sung Chang Lim, Jung Won Kang, Ha Hyun Lee, Dong San Jun, Hyun Suk Ko, Jin Ho Lee, Seung Hyun Cho, Hui Yong Kim, Jin Soo Choi
  • Method and apparatus for encoding/decoding a video using a motion compensation
    Patent number: 11743473
    Abstract: The present invention relates to a method for encoding/decoding a video. To this end, the method for decoding a video may include: deriving a spatial merge candidate from at least one of spatial candidate blocks of a current block, deriving a temporal merge candidate from a co-located block of the current block, and generating a prediction block of the current block based on at least one of the derived spatial merge candidate and the derived temporal merge candidate, wherein a reference picture for the temporal merge candidate is selected based on a reference picture list of a current picture including the current block and a reference picture list of a co-located picture including the co-located block.
    Type: Grant
    Filed: April 11, 2022
    Date of Patent: August 29, 2023
    Inventors: 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
  • METHOD AND DEVICE FOR ENCODING/DECODING IMAGE, AND RECORDING MEDIUM HAVING STORED BITSTREAM
    Publication number: 20230269372
    Abstract: The present invention relates to an image encoding/decoding method. The image decoding method includes splitting a coding tree unit (CTU) into at least one coding unit (CU) according to a block splitting structure and performing CU-based decoding, in which the block partition structure is configured such that at least one of binary tree splitting and ternary tree splitting is performed after quadtree splitting is performed.
    Type: Application
    Filed: May 1, 2023
    Publication date: August 24, 2023
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sung Chang LIM, Jung Won KANG, Hyun Suk KO, Jin Ho LEE, Ha Hyun LEE, Dong San JUN, Hui Yong KIM
  • IMAGE SIGNAL ENCODING/DECODING METHOD AND DEVICE THEREFOR
    Publication number: 20230269381
    Abstract: An image decoding method, according to the present disclosure, comprises the steps of: parsing tile column number information indicating a value wherein 1 is subtracted from the number of tile columns included in the i-th slice; parsing tile row number information indicating a value wherein 1 is subtracted from the number of tile rows included in the i-th slice; and, if the tile column number information and the tile row number information are both 0, further parsing number information related to the number of slices in which height information in a tile including the i-th slice is clearly signaled.
    Type: Application
    Filed: April 18, 2023
    Publication date: August 24, 2023
    Inventors: Bae Keun LEE, Dong San JUN
  • METHOD AND DEVICE FOR ENCODING/DECODING IMAGE, AND RECORDING MEDIUM STORING BIT STREAM
    Publication number: 20230239466
    Abstract: An image encoding/decoding method and apparatus for predicting a second color component block using a first color component block are provided. An image decoding method of the present invention comprises deriving a prediction parameter using the first color component block, and predicting the second color component block using the derived prediction parameter.
    Type: Application
    Filed: April 4, 2023
    Publication date: July 27, 2023
    Applicant: LX SEMICON CO., LTD
    Inventors: Jin Ho LEE, Hyun Suk KO, Jung Won KANG, Sung Chang LIM, Ha Hyun LEE, Dong San JUN, Seung Hyun CHO, Hui Yong KIM, Jin Soo CHOI
  • IMAGE ENCODING/DECODING METHOD, APPARATUS, AND RECORDING MEDIUM FOR STORING BITSTREAM
    Publication number: 20230231995
    Abstract: The present invention relates to an image encoding/decoding method and apparatus. The image decoding method according to the present invention may comprise constructing N MPM lists for a current block, wherein N is equal to or greater than 1, deriving an intra prediction mode of the current block based on the N MPM lists, and performing intra prediction for the current block based on the intra prediction mode.
    Type: Application
    Filed: March 17, 2023
    Publication date: July 20, 2023
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Hyun Suk KO, Sung Chang LIM, Jung Won KANG, Dong San JUN, Seung Hyun CHO, Jin Ho LEE, Ha Hyun LEE, Hui Yong KIM, Jin Soo CHOI
  • Image encoding/decoding method, apparatus, and recording medium for storing bitstream
    Patent number: 11689716
    Abstract: The present invention relates to an image encoding/decoding method and apparatus. The image decoding method according to the present invention may comprise constructing N MPM lists for a current block, wherein N is equal to or greater than 1, deriving an intra prediction mode of the current block based on the N MPM lists, and performing intra prediction for the current block based on the intra prediction mode.
    Type: Grant
    Filed: October 15, 2021
    Date of Patent: June 27, 2023
    Assignee: LX SEMICON CO., LTD
    Inventors: Hyun Suk Ko, Sung Chang Lim, Jung Won Kang, Dong San Jun, Seung Hyun Cho, Jin Ho Lee, Ha Hyun Lee, Hui Yong Kim, Jin Soo Choi
  • Method and apparatus for image encoding/decoding
    Patent number: 11683475
    Abstract: The present invention provides a method and apparatus for encoding/decoding an image to enhance inter prediction. According to the present invention, the method includes: determining a first reference picture and a second reference picture of a current block; determining both a first reference block in the first reference picture and a second reference block in the second reference picture; partitioning the current block into a plurality of sub blocks; and obtaining a prediction block of each of the sub blocks on the basis of reference candidate block index information of each of the sub blocks.
    Type: Grant
    Filed: May 10, 2021
    Date of Patent: June 20, 2023
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Dong San Jun, Jung Won Kang, Sung Chang Lim, Hyun Suk Ko, Jin Ho Lee, Hui Yong Kim, Jin Soo Choi
  • IMAGE ENCODING/DECODING METHOD AND APPARATUS AND RECORDING MEDIUM FOR STORING BITSTREAM
    Publication number: 20230188708
    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.
    Type: Application
    Filed: January 9, 2023
    Publication date: June 15, 2023
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: 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
  • Method and device for encoding/decoding image, and recording medium having stored bitstream
    Patent number: 11677940
    Abstract: The present invention relates to an image encoding/decoding method. The image decoding method includes splitting a coding tree unit (CTU) into at least one coding unit (CU) according to a block splitting structure and performing CU-based decoding, in which the block partition structure is configured such that at least one of binary tree splitting and ternary tree splitting is performed after quadtree splitting is performed.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: June 13, 2023
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Sung Chang Lim, Jung Won Kang, Hyun Suk Ko, Jin Ho Lee, Ha Hyun Lee, Dong San Jun, Hui Yong Kim
  • IMAGE ENCODING/DECODING METHOD AND DEVICE, AND RECORDING MEDIUM STORING BIT STREAM
    Publication number: 20230179796
    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.
    Type: Application
    Filed: December 12, 2022
    Publication date: June 8, 2023
    Applicant: Intellectual Discovery Co., Ltd.
    Inventors: Hyun Suk KO, Sung Chang LIM, Jung Won KANG, Jin Ho LEE, Ha Hyun LEE, Dong San JUN, Hui Yong KIM
  • VIDEO ENCODING/DECODING METHOD AND DEVICE, AND RECORDING MEDIUM STORING BIT STREAM
    Publication number: 20230179793
    Abstract: Disclosed is an image encoding method. The method includes deriving a motion refinement candidate from among motion information of spatial neighboring blocks, motion information of a temporal neighboring blocks, predefined motion information, and motion information that most frequently occurs in a reference picture, performing a motion information refinement on the derived motion refinement candidate, and generating a prediction block of a current block by using the motion refinement candidate having undergone the motion information refinement.
    Type: Application
    Filed: January 31, 2023
    Publication date: June 8, 2023
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Sung Chang LIM, Jung Won KANG, Hyun Suk KO, Dong San JUN, Jin Ho LEE, Ha Hyun LEE, Hui Yong KIM
  • Image signal encoding/decoding method and device therefor
    Patent number: 11665357
    Abstract: An image decoding method, according to the present disclosure, comprises the steps of: parsing tile column number information indicating a value wherein 1 is subtracted from the number of tile columns included in the i-th slice; parsing tile row number information indicating a value wherein 1 is subtracted from the number of tile rows included in the i-th slice; and, if the tile column number information and the tile row number information are both 0, further parsing number information related to the number of slices in which height information in a tile including the i-th slice is clearly signaled.
    Type: Grant
    Filed: June 23, 2022
    Date of Patent: May 30, 2023
    Assignee: XRIS CORPORATION
    Inventors: Bae Keun Lee, Dong San Jun
  • IMAGE ENCODING/DECODING METHODS AND APPARATUSES
    Publication number: 20230109828
    Abstract: Image encoding/decoding methods and apparatuses according to the present invention may generate a prediction block of a current block based on a pre-defined prediction mode, generate a transform block of the current block through predetermined transformation, and reconstruct the current block based on the prediction block and the transform block.
    Type: Application
    Filed: October 31, 2022
    Publication date: April 13, 2023
    Inventors: Bae Keun LEE, Dong San JUN
  • METHOD AND DEVICE FOR IMAGE ENCODING/DECODING ON BASIS OF ASYMMETRIC SUB-BLOCK
    Publication number: 20230106821
    Abstract: The present invention relates to a video encoding/decoding method and apparatus. The video decoding method according to the present invention may comprise dividing a coding unit into a plurality of sub-units according to a block division structure and performing decoding based on the sub-unit, wherein the block division structure is a block division structure in which division is performed so as to include at least one sub-unit having a predetermined block form other than square and rectangle forms.
    Type: Application
    Filed: December 13, 2022
    Publication date: April 6, 2023
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Dong San JUN, Ha Hyun LEE, Jung Won KANG, Hyun Suk KO, Sung Chang LIM, Jin Ho LEE, Hui Yong KIM
  • Video encoding/decoding method and device, and recording medium storing bit stream
    Patent number: 11616976
    Abstract: Disclosed is an image encoding method. The method includes deriving a motion refinement candidate from among motion information of spatial neighboring blocks, motion information of a temporal neighboring blocks, predefined motion information, and motion information that most frequently occurs in a reference picture, performing a motion information refinement on the derived motion refinement candidate, and generating a prediction block of a current block by using the motion refinement candidate having undergone the motion information refinement.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: March 28, 2023
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Sung Chang Lim, Jung Won Kang, Hyun Suk Ko, Dong San Jun, Jin Ho Lee, Ha Hyun Lee, Hui Yong Kim
  • VIDEO ENCODING/DECODING METHOD AND APPARATUS, AND RECORDING MEDIUM IN WHICH BIT STREAM IS STORED
    Publication number: 20230088384
    Abstract: An image encoding/decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus according to the present invention may comprise deriving an intra-prediction mode of a current block, and performing intra-prediction for the current block based on the intra-prediction mode. The deriving of the intra-prediction mode may comprise decoding a predetermined mode sameness indicator.
    Type: Application
    Filed: November 17, 2022
    Publication date: March 23, 2023
    Applicants: Electronics and Telecommunications Research Institute, Industry-University Cooperation Foundation Korea Aerospace University, Hanbat National University Industry-Academic Cooperation Foundation
    Inventors: Jin Ho LEE, Sung Chang LIM, Jung Won KANG, Hyun Suk KO, Ha Hyun LEE, Dong San JUN, Seung Hyun CHO, Hui Yong KIM, Jae Gon KIM, Do Hyeon PARK, Jin Soo CHOI, Hae Chul CHOI