Patents by Inventor Bae-keun Lee

Bae-keun Lee 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).

  • IMAGE SIGNAL ENCODING/DECODING METHOD AND APPARATUS THEREFOR
    Publication number: 20240056571
    Abstract: An image signal decoding method according to an embodiment of the present disclosure comprises the steps of: partitioning the current picture into a plurality of tiles; decoding partition information indicating a slice type, the partition information indicating whether a rectangular slice is to be applied; determining the number of slices in the current picture; and defining the slices using the tiles.
    Type: Application
    Filed: August 23, 2023
    Publication date: February 15, 2024
    Inventor: Bae Keun Lee
  • VIDEO SIGNAL PROCESSING METHOD AND DEVICE
    Publication number: 20240048725
    Abstract: A method of video decoding according to the present invention may comprise determining an intra prediction mode of a current block, determining a DC value using reference samples adjacent to the current block when the intra prediction mode of the current block is a DC mode, and deriving a prediction sample of the current block based on the DC value.
    Type: Application
    Filed: August 29, 2023
    Publication date: February 8, 2024
    Applicant: KT CORPORATION
    Inventor: Bae Keun LEE
  • IMAGE SIGNAL ENCODING/DECODING METHOD AND DEVICE THEREFOR
    Publication number: 20240040118
    Abstract: An image decoding method, according to the present invention, may comprise the steps of: splitting a current picture into a plurality of tiles; decoding split information indicating slice type, wherein the split information indicates whether a square-shaped slice is applied; and determining a slice on the basis of tile index difference information if the split information indicates that the square-shaped slice is applied.
    Type: Application
    Filed: September 29, 2023
    Publication date: February 1, 2024
    Inventor: Bae Keun LEE
  • METHOD FOR ENCODING/DECODING IMAGE SIGNAL, AND DEVICE FOR THE SAME
    Publication number: 20240040117
    Abstract: A video signal decoding method according to the present disclosure includes partitioning a current picture into a plurality of tiles, decoding partitioning information representing a slice type, wherein the partitioning information represents whether a rectangular slice is applied, decoding width information and height information for a first slice, decoding tile index difference value information for the first slice and determining an index of a top-left tile of a second slice based on the difference value information.
    Type: Application
    Filed: September 28, 2023
    Publication date: February 1, 2024
    Inventor: Bae Keun LEE
  • Method for encoding/decoding image signal and device therefor
    Patent number: 11889077
    Abstract: An image decoding method according to the present invention may comprise the steps of: dividing a coding block into a first prediction unit and a second prediction unit; deriving a merge candidate list for the coding block; deriving first motion information for the first prediction unit and second motion information for the second prediction unit by means of the merge candidate list; and on the basis of the first motion information and the second motion information, acquiring a prediction sample within the coding block.
    Type: Grant
    Filed: June 10, 2022
    Date of Patent: January 30, 2024
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventor: Bae Keun Lee
  • Method and apparatus for processing video signal
    Patent number: 11889064
    Abstract: An image decoding method according to the present invention may comprise the steps of: deriving a merge candidate from a candidate block; generating a first merge candidate list including the merge candidate; specifying any one of a plurality of merge candidates included in the first merge candidate list; deriving affine vectors of a current block on the basis of motion information of the specified merge candidate; deriving a motion vector of a sub-block in the current block on the basis of the affine vectors; and performing motion compensation on the sub-block on the basis of the motion vector.
    Type: Grant
    Filed: April 25, 2023
    Date of Patent: January 30, 2024
    Assignee: KT CORPORATION
    Inventor: Bae Keun Lee
  • METHOD FOR ENCODING/DECODING IMAGE SIGNAL AND DEVICE THEREFOR
    Publication number: 20240031574
    Abstract: A method for decoding an image according to the present invention comprises the steps of: partitioning a coding block into a plurality of sub-blocks in a horizontal direction or vertical direction; determining whether a second inverse transform is applied to the coding block; and when it is determined that the second inverse transform is applied to the coding block, applying the second inverse transform to at least one of the plurality of sub-blocks.
    Type: Application
    Filed: September 25, 2023
    Publication date: January 25, 2024
    Inventor: Bae Keun LEE
  • METHOD FOR ENCODING/DECODING VIDEO SIGNAL AND APPARATUS THEREFOR
    Publication number: 20240031556
    Abstract: A video decoding method according to the present disclosure includes determining a reference sample line for a current block, deriving an intra prediction mode for the current block, and performing intra prediction of the current block based on the reference sample line and the intra prediction mode.
    Type: Application
    Filed: June 16, 2023
    Publication date: January 25, 2024
    Inventor: Bae Keun Lee
  • Method for encoding/decoding image signal, and apparatus therefor
    Patent number: 11882282
    Abstract: A method for decoding an image, according to the present invention, comprises the steps of: determining whether a coding block is divided into a first prediction unit and a second prediction unit; determining a partition type of the coding block when determining that the coding block is divided; deriving first motion information about a first prediction unit and second motion information about a second prediction unit within the coding block; and acquiring a prediction sample within the coding block on the basis of the first motion information and the second motion information.
    Type: Grant
    Filed: June 27, 2022
    Date of Patent: January 23, 2024
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventor: Bae Keun Lee
  • IMAGE SIGNAL ENCODING/DECODING METHOD AND DEVICE FOR SAME
    Publication number: 20240022720
    Abstract: An image decoding method according to the present invention may include splitting a picture into a plurality of tiles; and determining at least one slice on the basis of the plurality of tiles. Here, splitting a picture into a plurality of tiles may include: determining the width of a first tile column in the picture; and determining the width of a second tile column neighboring the first tile column.
    Type: Application
    Filed: June 12, 2023
    Publication date: January 18, 2024
    Inventor: Bae Keun Lee
  • IMAGE ENCODING/DECODING METHOD AND DEVICE
    Publication number: 20240022730
    Abstract: The image encoding/decoding method and device according to the present invention can construct a merge candidate list of a current block, derive motion information of the current block on the basis of the merge candidate list and a merge index of the current block, derive a motion vector difference of the current block, correct a motion vector of the current block by means of the motion vector difference, and carry out motion compensation on the current block by means of the corrected motion vector.
    Type: Application
    Filed: September 27, 2023
    Publication date: January 18, 2024
    Inventors: Bae Keun LEE, Dong San JUN
  • Method and apparatus for processing video signal
    Patent number: 11876999
    Abstract: A method for decoding a video according to the present invention may comprise: generating a first prediction block for a current block based on a first prediction mode, generating a second prediction block for a current block based on a second prediction mode, and generating a final prediction block of the current block based on the first prediction block and the second prediction block.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: January 16, 2024
    Assignee: KT CORPORATION
    Inventor: Bae Keun Lee
  • Method and apparatus for processing video signal
    Patent number: 11876998
    Abstract: An image decoding method according to the present invention can comprise the steps of: deriving merge candidates from neighboring blocks adjacent to a current block; generating a merge candidate list including the merge candidates, wherein the arrangement order of the merge candidates in the merge candidate list is determined on the basis of initial priorities; re-arranging the merge candidates included in the merge candidate list; decoding information for specifying at least one of the merge candidates included in the merge candidate list; and deriving motion information of the current block from a merge candidate corresponding to the information.
    Type: Grant
    Filed: June 30, 2022
    Date of Patent: January 16, 2024
    Assignee: KT CORPORATION
    Inventor: Bae Keun Lee
  • METHOD AND APPARATUS FOR PROCESSING VIDEO SIGNAL
    Publication number: 20240015292
    Abstract: A method for decoding a video according to the present invention may comprise: obtaining a weighted prediction parameter of a current block, determined, based on the weighted prediction parameter, weights applying to a first prediction block generated based on a first reference picture and a second prediction block generated based on a second reference picture, and obtaining, based on a weighted sum of the first prediction block and the second prediction block, a final prediction block of the current block.
    Type: Application
    Filed: September 21, 2023
    Publication date: January 11, 2024
    Applicant: KT CORPORATION
    Inventor: Bae Keun LEE
  • METHOD AND APPARATUS FOR PROCESSING VIDEO SIGNAL
    Publication number: 20240015287
    Abstract: A method for decoding a video according to the present invention may comprise: determining merge target candidate blocks of a current coding block, specifying at least one among the merge target candidate blocks, and generating a merged block by merging the specified merge target candidate block and the current coding block.
    Type: Application
    Filed: September 20, 2023
    Publication date: January 11, 2024
    Applicant: KT CORPORATION
    Inventor: Bae Keun LEE
  • METHOD FOR ENCODING/DECODING IMAGE SIGNAL, AND DEVICE THEREFOR
    Publication number: 20240015317
    Abstract: An image decoding method according to the present invention comprises the steps of: referring to a first flag for indicating whether intra block-based delta pulse code modulation (BDPCM) signaled through a sequence parameter set is permitted, so as to determine whether a second flag for indicating whether the intra BDPCM is applied to a current block is parsed; determining whether the intra BDPCM is applied to the current block on the basis of the second flag; determining an intra BDPCM mode of the current block when it is determined that the intra BDPCM is applied to the current block; and acquiring a residual sample of the current block on the basis of the intra BDPCM mode.
    Type: Application
    Filed: April 19, 2023
    Publication date: January 11, 2024
    Inventor: Bae Keun Lee
  • METHOD AND APPARATUS FOR PROCESSING VIDEO SIGNAL
    Publication number: 20240015339
    Abstract: A method for decoding a video according to the present invention may comprise: determining whether to divide a current block with quad tree partitioning, and dividing the current block into four partitions based on a vertical line and a horizontal line when it is determined that the current block is divided with the quad tree partitioning.
    Type: Application
    Filed: September 25, 2023
    Publication date: January 11, 2024
    Applicant: KT CORPORATION
    Inventor: Bae Keun LEE
  • METHOD FOR ENCODING/DECODING IMAGE SIGNAL AND DEVICE FOR SAME
    Publication number: 20240007617
    Abstract: An image decoding method according to the present invention includes: a step for determining a reference sample line of a current block; a step for determining whether candidate intra-prediction modes identical to the intra-prediction mode of the current block exist; a step for deriving the intra-prediction mode of the current block on the basis of the determination; and a step for performing intra-prediction on the current block on the basis of the reference sample line and the intra-prediction mode. Here, at least one of the candidate intra prediction modes may be derived by adding or subtracting an offset to or from the maximum value among the intra-prediction mode of a neighboring block that is above the current block and the intra-prediction mode of a neighboring block that is to the left of the current block.
    Type: Application
    Filed: September 14, 2023
    Publication date: January 4, 2024
    Inventor: Bae Keun LEE
  • METHOD FOR ENCODING/DECODING IMAGE SIGNAL AND DEVICE FOR SAME
    Publication number: 20240007616
    Abstract: An image decoding method according to the present invention includes: a step for determining a reference sample line of a current block; a step for determining whether candidate intra-prediction modes identical to the intra-prediction mode of the current block exist; a step for deriving the intra-prediction mode of the current block on the basis of the determination; and a step for performing intra-prediction on the current block on the basis of the reference sample line and the intra-prediction mode. Here, at least one of the candidate intra prediction modes may be derived by adding or subtracting an offset to or from the maximum value among the intra-prediction mode of a neighboring block that is above the current block and the intra-prediction mode of a neighboring block that is to the left of the current block.
    Type: Application
    Filed: September 13, 2023
    Publication date: January 4, 2024
    Inventor: Bae Keun LEE
  • METHOD FOR ENCODING/DECODING IMAGE SIGNAL AND DEVICE FOR SAME
    Publication number: 20240007618
    Abstract: An image decoding method according to the present invention includes: a step for determining a reference sample line of a current block; a step for determining whether candidate intra-prediction modes identical to the intra-prediction mode of the current block exist; a step for deriving the intra-prediction mode of the current block on the basis of the determination; and a step for performing intra-prediction on the current block on the basis of the reference sample line and the intra-prediction mode. Here, at least one of the candidate intra prediction modes may be derived by adding or subtracting an offset to or from the maximum value among the intra-prediction mode of a neighboring block that is above the current block and the intra-prediction mode of a neighboring block that is to the left of the current block.
    Type: Application
    Filed: September 15, 2023
    Publication date: January 4, 2024
    Inventor: Bae Keun LEE