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).

  • METHOD AND DEVICE FOR VIDEO SIGNAL PROCESSING
    Publication number: 20230353772
    Abstract: An image decoding method according to the present invention may comprise obtaining a motion vector of a current block, updating the motion vector when bi-directional optical flow is applied to the current block, performing motion compensation on the current block by using the updated motion vector.
    Type: Application
    Filed: June 27, 2023
    Publication date: November 2, 2023
    Applicant: KT CORPORATION
    Inventor: Bae Keun LEE
  • VIDEO SIGNAL PROCESSING METHOD AND DEVICE
    Publication number: 20230353750
    Abstract: According to the present invention, there is provided a method of decoding an image, the method including: deriving an initial motion vector of a current block; determining a motion refinement vector of the current block; and determining a motion vector of the current block on the basis of the initial motion vector and the motion refinement vector. Herein, the initial motion vector is derived from any one of merge candidates included in a merge candidate list for the current block.
    Type: Application
    Filed: June 8, 2023
    Publication date: November 2, 2023
    Applicant: KT CORPORATION
    Inventor: Bae Keun LEE
  • METHOD FOR ENCODING/DECODING VIDEO SIGNAL, AND APPARATUS THEREFOR
    Publication number: 20230353724
    Abstract: A method for decoding a video, according to the present invention, may comprise the steps of: generating an intra block copy (IBC) merge candidate list for a current block; selecting any one of IBC merge candidates included in the IBC merge candidate list; deriving a block vector of the current block on the basis of the selected IBC merge candidate; and obtaining a prediction sample of the current block on the basis of the block vector.
    Type: Application
    Filed: March 30, 2023
    Publication date: November 2, 2023
    Inventor: Bae Keun Lee
  • Method and apparatus for processing video signal
    Patent number: 11805255
    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: Grant
    Filed: August 17, 2021
    Date of Patent: October 31, 2023
    Assignee: KT CORPORATION
    Inventor: Bae Keun Lee
  • METHOD AND APPARATUS FOR PROCESSING VIDEO SIGNAL
    Publication number: 20230336717
    Abstract: A method for decoding a video according to the present invention may comprise: determining a first prediction mode for a first sub-block in a current block and a second intra prediction mode for a second sub-block, performing a first prediction for the first sub-block based on the first intra prediction mode, performing a second prediction for the second sub-block based on the second intra prediction mode, and obtaining a prediction sample of the current block according to a result of the first prediction and the second prediction.
    Type: Application
    Filed: June 19, 2023
    Publication date: October 19, 2023
    Applicant: KT CORPORATION
    Inventor: Bae Keun LEE
  • VIDEO SIGNAL ENCODING AND DECODING METHOD, AND APPARATUS THEREFOR
    Publication number: 20230336768
    Abstract: A video decoding method includes the steps of: generating a merge candidate list for a first block; selecting one among merge candidates included in the merge candidate list; and performing motion compensation for the first block based on motion information of the selected merge candidate. At this point, an inter-region merge candidate included in an inter-region motion information list may be added to the merge candidate list based on the number of spatial merge candidates and temporal merge candidates included in the merge candidate list.
    Type: Application
    Filed: June 16, 2023
    Publication date: October 19, 2023
    Inventor: Bae Keun LEE
  • METHOD AND APPARATUS FOR PROCESSING VIDEO SIGNAL
    Publication number: 20230328277
    Abstract: A method for decoding a video according to the present invention may comprise: determining an intra prediction mode of a current block, deriving reference samples from neighboring samples of the current block, obtaining a first prediction sample for the current block, based on the intra prediction mode and the reference samples, determining an offset for the first prediction sample, and obtaining a second prediction sample by applying the offset to the first prediction sample.
    Type: Application
    Filed: May 24, 2023
    Publication date: October 12, 2023
    Applicant: KT CORPORATION
    Inventor: Bae Keun LEE
  • IMAGE SIGNAL ENCODING/DECODING METHOD AND DEVICE THEREFOR
    Publication number: 20230328228
    Abstract: An image decoding method according to the present invention may comprise the steps of: generating a merge candidate list of a current block; selecting one merge candidate from merge candidates included in the merge candidate list; and performing motion compensation of the current block on the basis of motion information of the selected merge candidate.
    Type: Application
    Filed: March 16, 2023
    Publication date: October 12, 2023
    Inventor: Bae Keun Lee
  • Method and apparatus for processing video signal
    Patent number: 11785257
    Abstract: A method for processing a video according to the present invention may comprise: generating a plurality of Most Probable Mode (MPM) candidates; determining whether there is an MPM candidate identical to an intra-prediction mode of a current block among the plurality of MPM candidates; obtaining the intra-prediction mode of the current block, based on a result of the determining; and performing an intra-prediction for the current block, based on the intra-prediction mode of the current block.
    Type: Grant
    Filed: January 12, 2022
    Date of Patent: October 10, 2023
    Assignee: KT CORPORATION
    Inventors: Bae Keun Lee, Joo Young Kim
  • Video signal processing method and device
    Patent number: 11785228
    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: Grant
    Filed: June 8, 2022
    Date of Patent: October 10, 2023
    Assignee: KT CORPORATION
    Inventor: Bae Keun Lee
  • METHOD FOR ENCODING/DECODING IMAGE SIGNAL AND APPARATUS THEREFOR
    Publication number: 20230319273
    Abstract: An image signal decoding method according to an embodiment of the present disclosure comprises the steps of: splitting a current picture into a plurality of tiles; decoding split information indicating a slice type, wherein the split information indicates whether a rectangular slice is to be applied; and when the split information indicates that the rectangular slice is to be applied, determining a slice on the basis of information indicating the size of a slice.
    Type: Application
    Filed: June 7, 2023
    Publication date: October 5, 2023
    Inventor: Bae Keun LEE
  • METHOD AND DEVICE FOR PROCESSING VIDEO SIGNAL
    Publication number: 20230300324
    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 based on at least one of top reference samples or left reference samples of 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: May 24, 2023
    Publication date: September 21, 2023
    Applicant: KT CORPORATION
    Inventor: Bae Keun LEE
  • IMAGE SIGNAL ENCODING/DECODING METHOD AND DEVICE FOR SAME
    Publication number: 20230300331
    Abstract: An image decoding method according to the present invention may include: a step for dividing a picture into a plurality of tiles; and a step for determining at least one slice on the basis of the plurality of tiles. Here, the step for dividing a picture into a plurality of tiles may include: a step for determining the width of a first tile column in the picture; and a step for determining the width of a second tile column neighboring the first tile column.
    Type: Application
    Filed: March 2, 2023
    Publication date: September 21, 2023
    Inventor: Bae Keun Lee
  • METHOD AND APPARATUS FOR PROCESSING VIDEO SIGNAL
    Publication number: 20230291923
    Abstract: A method for decoding a video according to the present invention may comprise: decoding information indicating whether a non-zero transform coefficient exists in a current block, when the information indicates that the non-zero transform coefficient exists in the current block, determining a scanning order of the current block, and decoding a transform coefficient included in the current block according to the determined scanning order.
    Type: Application
    Filed: May 22, 2023
    Publication date: September 14, 2023
    Applicant: KT CORPORATION
    Inventor: Bae Keun LEE
  • METHOD AND DEVICE FOR VIDEO SIGNAL PROCESSING
    Publication number: 20230291929
    Abstract: An image decoding method according to the present invention may comprise determining an intra prediction mode of a current block, deriving reference samples of the current block, and obtaining a prediction sample of the current block using at least one of the reference samples.
    Type: Application
    Filed: May 18, 2023
    Publication date: September 14, 2023
    Applicant: KT CORPORATION
    Inventor: Bae Keun LEE
  • Image signal encoding/decoding method and non-transitory computer-readable medium
    Patent number: 11758176
    Abstract: An image decoding method according to the present disclosure comprises the steps of: generating a merge candidate list in a current block; specifying one of a plurality of merge candidates included in the merge candidate list; deriving a first affine seed vector and a second affine seed vector of the current block on the basis of a first affine seed vector and a second affine seed vector of the specified merge candidate; deriving an affine vector for a subblock in the current block, using the first affine seed vector and the second affine seed vector of the current block; and performing motion compensation prediction for the subblock on the basis of the affine vector.
    Type: Grant
    Filed: December 3, 2021
    Date of Patent: September 12, 2023
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventor: Bae Keun Lee
  • VIDEO SIGNAL ENCODING/DECODING METHOD AND DEVICE THEREFOR
    Publication number: 20230283773
    Abstract: A video decoding method according to the present invention may comprise: a step for determining whether to divide a current block into a plurality of sub-blocks; a step for determining an intra prediction mode for the current block; and a step for performing intra prediction for each sub-block on the basis of the intra prediction mode, when the current block is divided into the plurality of sub-blocks.
    Type: Application
    Filed: January 27, 2023
    Publication date: September 7, 2023
    Inventor: Bae Keun Lee
  • Video signal encoding and decoding method, and apparatus therefor
    Patent number: 11750833
    Abstract: A video decoding method includes the steps of: generating a merge candidate list for a first block; selecting one among merge candidates included in the merge candidate list; and performing motion compensation for the first block based on motion information of the selected merge candidate. At this point, an inter-region merge candidate included in an inter-region motion information list may be added to the merge candidate list based on the number of spatial merge candidates and temporal merge candidates included in the merge candidate list.
    Type: Grant
    Filed: November 16, 2021
    Date of Patent: September 5, 2023
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNCATIONS CORP., LTD.
    Inventor: Bae Keun Lee
  • Method and apparatus for processing video signal
    Patent number: 11743472
    Abstract: A method for processing a video signal according to the present invention comprises: determining a length of a current string, which is decoded on the basis of a sample string matching technique in a current block; determining a reference string on the basis of at least one between the length of the current string and a string vector for the current string; and predicting the current string using the reference string.
    Type: Grant
    Filed: June 24, 2021
    Date of Patent: August 29, 2023
    Assignee: KT CORPORATION
    Inventors: Bae Keun Lee, Joo Young Kim
  • Method and apparatus for processing video signal
    Patent number: 11743481
    Abstract: A method for decoding a video according to the present invention may comprise: decoding information indicating whether illumination compensation is performed for a current block, determining an illumination compensation parameter of the current block when the information indicates that the illumination compensation is performed for the current block, obtaining a prediction block by performing inter prediction for the current block, and performing the illumination compensation on the current block using the illumination compensation parameter.
    Type: Grant
    Filed: June 7, 2022
    Date of Patent: August 29, 2023
    Assignee: KT CORPORATION
    Inventor: Bae Keun Lee