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 PROCESSING VIDEO SIGNAL
    Publication number: 20190191163
    Abstract: A method for decoding a video according to the present invention may comprise: deriving a spatial merge candidate for a current block, generating a merge candidate list for the current block based on the spatial merge candidate, obtaining motion information for the current block based on the merge candidate list, and performing motion compensation for the current block based on the motion information. Herein, if the current block does not have a pre-defined shape or a size equal to or greater than a pre-defined size, the spatial merge candidate of the current block may be derived based on a block which have the pre-defined shape or a size equal to or greater than the pre-defined size, the block including the current block.
    Type: Application
    Filed: August 31, 2017
    Publication date: June 20, 2019
    Applicant: KT CORPORATION
    Inventor: Bae Keun LEE
  • METHOD AND APPARATUS FOR PROCESSING VIDEO SIGNAL
    Publication number: 20190182490
    Abstract: A method for processing a vide 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: Application
    Filed: February 18, 2019
    Publication date: June 13, 2019
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Joo Young KIM
  • VIDEO SIGNAL PROCESSING METHOD AND DEVICE
    Publication number: 20190182491
    Abstract: A method for decoding a video according to the present invention may comprise: deriving a spatial merge candidate for a current block, generating a merge candidate list for the current block based on the spatial merge candidate, obtaining motion information for the current block based on the merge candidate list, and performing motion compensation for the current block using the motion information. Herein, if the current block does not have a pre-defined shape or does not have a size equal to or greater than a pre-defined size, the spatial merge candidate of the current block is derived based on a block having the pre-defined shape or having a size equal to or greater than the pre-defined size, the block comprising the current block.
    Type: Application
    Filed: August 3, 2017
    Publication date: June 13, 2019
    Applicant: KT CORPORATION
    Inventor: Bae Keun LEE
  • VIDEO SIGNAL PROCESSING METHOD AND DEVICE
    Publication number: 20190182481
    Abstract: A method for decoding a video according to the present invention may comprise: deriving a plurality of reference sample lines for a current block, selecting at least two among the plurality of reference sample lines, and performing intra prediction for the current block based on the selected reference sample lines.
    Type: Application
    Filed: August 3, 2017
    Publication date: June 13, 2019
    Applicant: KT CORPORATION
    Inventor: Bae Keun LEE
  • Method and apparatus for encoding/decoding image using transform skip flag
    Patent number: 10313667
    Abstract: Provided is a method for decoding an image. The method includes: deciding a prediction mode that corresponds to a chroma component block; deciding a transform skip mode of the chroma component block from a plurality of transform skip mode candidates, according to the prediction mode that corresponds to the chroma component block; and reverse-transforming the chroma component block on the basis of the transform skip mode that is decided.
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: June 4, 2019
    Assignee: KT CORPORATION
    Inventors: Bae Keun Lee, Jae Cheol Kwon, Joo Young Kim
  • VIDEO SIGNAL PROCESSING METHOD AND APPARATUS
    Publication number: 20190158835
    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: June 30, 2017
    Publication date: May 23, 2019
    Applicant: KT CORPORATION
    Inventor: Bae Keun LEE
  • METHOD AND APPARATUS FOR PROCESSING VIDEO SIGNAL
    Publication number: 20190116381
    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: Application
    Filed: April 4, 2017
    Publication date: April 18, 2019
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Joo Young KIM
  • Method and apparatus for decoding a video signal using adaptive transform
    Patent number: 10264283
    Abstract: The present invention relates to a technique for encoding and decoding an image, and a method for encoding the image, according to the present invention, comprises the steps of: performing a prediction with respect to a current block; and transforming a residual which is generated by the prediction, wherein in the step of transforming, a first transform is performed on the residual, and then a second transform is performed on a lower frequency area, and wherein a mode of the second transform can be decided on the basis of a mode of the first transform.
    Type: Grant
    Filed: October 18, 2012
    Date of Patent: April 16, 2019
    Assignee: KT CORPORATION
    Inventors: Bae Keun Lee, Jae Cheol Kwon, Joo Young Kim
  • Method and apparatus for processing video signal
    Patent number: 10257521
    Abstract: A method for processing a vide 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: September 30, 2015
    Date of Patent: April 9, 2019
    Assignee: KT CORPORATION
    Inventors: Bae Keun Lee, Joo Young Kim
  • Method and apparatus for processing multiview video signals based on illumination compensation and inter-view motion candidate
    Patent number: 10257531
    Abstract: A method for processing multiview video signals, according to the present invention, comprises: generating a merge candidate list with respect to a current block; inducing a motion vector of the current block on the basis of a merge index of the current block, which has been obtained from a bitstream; obtaining a prediction value of the current block using the motion vector; and reconstructing the current block by adding the prediction value and a residual value of the current block.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: April 9, 2019
    Assignee: KT CORPORATION
    Inventors: Bae Keun Lee, Joo Young Kim
  • Method for inducing motion information in multilayer structure and apparatus using same
    Patent number: 10250902
    Abstract: The present invention relates to a method for encoding a video and a method for decoding a video in a multilayer structure, and an apparatus using the same. The method for decoding the video according to the present invention comprises the steps of: specifying a current layer reference location for specifying a current block from a current layer; specifying a reference layer reference location corresponding to the reference location of the current layer, from the reference layer; inducing motion information from the reference layer reference location based on the size of motion information saving units; and scaling the induced motion information and inducing the same into a motion vector used for recovering a picture in the current layer.
    Type: Grant
    Filed: May 26, 2014
    Date of Patent: April 2, 2019
    Assignee: KT CORPORATION
    Inventors: Bae Keun Lee, Joo Young Kim
  • VIDEO SIGNAL PROCESSING METHOD AND DEVICE
    Publication number: 20190068989
    Abstract: A method of processing video signal according to a present invention comprises deriving an affine motion vector using a plurality of motion vectors related to a current block, and performing a motion compensation based on the derived affine motion vector and a position of a current sample.
    Type: Application
    Filed: February 24, 2017
    Publication date: February 28, 2019
    Applicant: KT CORPORATION
    Inventor: Bae Keun LEE
  • Image encoding and decoding method supporting plurality of layers and apparatus using same
    Patent number: 10200702
    Abstract: An image decoding method supporting a plurality of layers according to the present invention may comprise the steps of: when an initial reference picture list of a current picture is configured, receiving flag information indicating whether reference picture set information of a reference layer to which the current picture refers is used; generating the initial reference picture list on the basis of the flag information; and predicting the current picture on the basis of the initial reference picture list. Accordingly, the present invention provides a method for generating a reference picture list including a picture of a layer, which is different from a layer to be currently encoded and decoded, and an apparatus using the same.
    Type: Grant
    Filed: December 30, 2017
    Date of Patent: February 5, 2019
    Assignee: KT CORPORATION
    Inventors: Bae Keun Lee, Joo Young Kim
  • Method and apparatus for encoding/decoding multilayer video signal
    Patent number: 10187641
    Abstract: A method for decoding a multilayer video signal, according to the present invention, is characterized by: inducing the number of active references of a current picture in consideration of whether the maximum number of active reference pictures of the current picture in a current layer is limited; obtaining a reference layer identifier based on the number of active references; determining an active reference picture of the current picture using a reference layer identifier; generating an interlayer reference picture by upsampling the active reference picture, and performing interlayer prediction of the current picture using an interlayer reference picture.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: January 22, 2019
    Assignee: KT CORPORATION
    Inventors: Bae Keun Lee, Joo Young Kim
  • Method and device for processing multi-view video signal
    Patent number: 10187658
    Abstract: The present invention provides a method and apparatus for processing a multi-view video signal, the method including: determining a prediction mode of a current depth block; determining a partition mode of the current texture block when the current texture block is a block encoded in an inter mode; obtaining a motion vector of each partition based on the partition mode; and performing inter prediction on the current texture block by using the motion vector through depth-based.
    Type: Grant
    Filed: July 2, 2015
    Date of Patent: January 22, 2019
    Assignee: KT CORPORATION
    Inventors: Bae Keun Lee, Joo Young Kim
  • Method for inducing a merge candidate block and device using same
    Patent number: 10182237
    Abstract: The present invention relates to a method for inducing a merge candidate block and a device using same. An image decoding method involves decoding motion estimation region (MER) related information; determining whether or not a predicted target block and a spatial merge candidate block are included in the same MER; and determining the spatial merge candidate block to be an unavailable merge candidate block when the predicted target block and the spatial merge candidate block are included in the same MER. Accordingly, by parallely performing the method for inducing a merge candidate, parallel processing is enabled and the computation amount and implementation complexity are reduced.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: January 15, 2019
    Assignee: KT CORPORATION
    Inventors: Bae Keun Lee, Jae Cheol Kwon, Joo Young Kim
  • Method and apparatus for encoding/decoding multilayer video signal
    Patent number: 10178392
    Abstract: A method for decoding a multilayer video signal, according to the present invention, is characterized by: inducing the number of active references of a current picture, in consideration of whether the maximum number of active reference pictures of the current picture in a current layer is limited; obtaining a reference layer identifier based on the number of active references, determining an active reference picture of the current picture using a reference layer identifier, generating a reference picture list including the active reference pictures, and performing interlayer prediction of the current picture using the reference picture list.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: January 8, 2019
    Assignee: KT CORPORATION
    Inventors: Bae Keun Lee, Joo Young Kim
  • Method for inducing a merge candidate block and device using same
    Patent number: 10165295
    Abstract: The present invention relates to a method for inducing a merge candidate block and a device using same. An image decoding method involves decoding motion estimation region (MER) related information; determining whether or not a predicted target block and a spatial merge candidate block are included in the same MER; and determining the spatial merge candidate block to be an unavailable merge candidate block when the predicted target block and the spatial merge candidate block are included in the same MER. Accordingly, by parallely performing the method for inducing a merge candidate, parallel processing is enabled and the computation amount and implementation complexity are reduced.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: December 25, 2018
    Assignee: KT CORPORATION
    Inventors: Bae Keun Lee, Jae Cheol Kwon, Joo Young Kim
  • Method for inducing a merge candidate block and device using same
    Patent number: 10165294
    Abstract: The present invention relates to a method for inducing a merge candidate block and a device using same. An image decoding method involves decoding motion estimation region (MER) related information; determining whether or not a predicted target block and a spatial merge candidate block are included in the same MER; and determining the spatial merge candidate block to be an unavailable merge candidate block when the predicted target block and the spatial merge candidate block are included in the same MER. Accordingly, by parallely performing the method for inducing a merge candidate, parallel processing is enabled and the computation amount and implementation complexity are reduced.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: December 25, 2018
    Assignee: KT CORPORATION
    Inventors: Bae Keun Lee, Jae Cheol Kwon, Joo Young Kim
  • Image encoding and decoding method supporting plurality of layers and apparatus using same
    Patent number: 10154259
    Abstract: An image decoding method supporting a plurality of layers according to the present invention may comprise the steps of: receiving location information on a location in which an inter-layer reference picture set for one or more reference layers, to which a current picture can refer, is added to a reference picture list; generating an initial reference picture list including the inter-layer reference picture set on the basis of the location information; and predicting the current picture on the basis of the initial reference picture list. Accordingly, the present invention provides a method for signaling location information on a location in which an inter-layer reference picture is added to a reference picture list, and an apparatus using the same.
    Type: Grant
    Filed: August 7, 2017
    Date of Patent: December 11, 2018
    Assignee: KT CORPORATION
    Inventors: Bae Keun Lee, Joo Young Kim