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 ENCODING AND DECODING METHOD SUPPORTING PLURALITY OF LAYERS AND APPARATUS USING SAME
    Publication number: 20180124395
    Abstract: An image decoding method supporting a plurality of layers according to the present invention may comprise the steps of: generating an inter-layer reference picture set with respect to one or more reference layers to which a current picture can refer; generating an initial reference picture list including the inter-layer reference picture set; 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: Application
    Filed: December 30, 2017
    Publication date: May 3, 2018
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Joo Young KIM
  • VIDEO SIGNAL PROCESSING METHOD AND DEVICE
    Publication number: 20180124420
    Abstract: A method for processing a vide signal, according to the present invention comprises generating a reference picture list based on a current picture reference flag for a current picture, obtaining motion information about a current block in the current picture, and restoring the current block using the motion information of the current block and the reference picture list relating to the current picture.
    Type: Application
    Filed: November 24, 2015
    Publication date: May 3, 2018
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Joo Young KIM
  • METHOD AND APPARATUS FOR PROCESSING VIDEO SIGNAL
    Publication number: 20180109798
    Abstract: A video signal processing method according to the present invention is characterized by obtaining at least one palette entry of a current block from a palette map of a previous block, constructing a palette map of the current block including the obtained palette entry, deriving a palette index of the current block by using at least one of palette index information or palette index run related to the current block, and reconstructing the current block by using a palette map of the current block and the palette index.
    Type: Application
    Filed: March 28, 2016
    Publication date: April 19, 2018
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Joo Young KIM
  • Method for inducing a merge candidate block and device using same
    Patent number: 9930359
    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: December 14, 2016
    Date of Patent: March 27, 2018
    Assignee: KT CORPORATION
    Inventors: Bae Keun Lee, Jae Cheol Kwon, Joo Young Kim
  • Method and apparatus for encoding/decoding image using transform skip flag
    Patent number: 9930333
    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: September 7, 2016
    Date of Patent: March 27, 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: 9924185
    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 parallelly performing the method for inducing a merge candidate, parallel processing is enabled and the computation amount and implementation complexity are reduced.
    Type: Grant
    Filed: July 14, 2016
    Date of Patent: March 20, 2018
    Assignee: KT CORPORATION
    Inventors: Bae Keun Lee, Jae Cheol Kwon, Joo Young Kim
  • METHOD AND APPARATUS FOR COEFFICIENT SCAN BASED ON PARTITION MODE OF PREDICTION UNIT
    Publication number: 20180070090
    Abstract: Provided are a method and an apparatus for coefficient scan on the base of a partition mode of a prediction unit. The method comprises the steps of: determining a scan method on the basis of a partition mode of a prediction unit; and encoding the information about the scan method, wherein the scan method is determined, on the basis of RDO (Rate Distortion optimization), from among the extracted candidate scan methods which have been extracted with consideration of the shapes of the partitions of the partition mode.
    Type: Application
    Filed: November 9, 2017
    Publication date: March 8, 2018
    Applicant: 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: 9894369
    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: July 25, 2014
    Date of Patent: February 13, 2018
    Assignee: KT CORPORATION
    Inventors: Bae Keun Lee, Joo Young Kim
  • Image encoding and decoding method supporting plurality of layers and apparatus using same
    Patent number: 9894357
    Abstract: An image decoding method supporting a plurality of layers according to the present invention may comprise the steps of: generating an inter-layer reference picture set with respect to one or more reference layers to which a current picture can refer; generating an initial reference picture list including the inter-layer reference picture set; 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: July 25, 2014
    Date of Patent: February 13, 2018
    Assignee: KT CORPORATION
    Inventors: Bae Keun Lee, Joo Young Kim
  • METHOD AND APPARATUS FOR PROCESSING VIDEO SIGNALS
    Publication number: 20180020237
    Abstract: A video signal processing method according to the present invention is characterized by constructing a palette map related to a current block encoded in a palette mode, determining, based on a mode identifies of a current sample included in the current block, a palette index mode of the current sample, deriving a palette index of the current sample based on the palette index mode, reconstructing the current sample by using a palette map of the current block and the palette index.
    Type: Application
    Filed: January 29, 2016
    Publication date: January 18, 2018
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Joo Young KIM
  • METHOD AND APPARATUS FOR PROCESSING VIDEO SIGNALS
    Publication number: 20180020236
    Abstract: A video signal processing method according to the present invention is characterized by obtaining at least one palette entry of a current block from a palette map of a previous block, constructing a palette map of a current block including the obtained palette entry, deriving a palette index in a unit of a sample of a current block, and reconstructing a current block by using a palette map of a current block and a palette index.
    Type: Application
    Filed: January 29, 2016
    Publication date: January 18, 2018
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Joo Young KIM
  • METHOD AND APPARATUS FOR ENTROPY ENCODING/DECODING A TRANSFORM COEFFICIENT
    Publication number: 20180020239
    Abstract: A method and apparatus for entropy coding and decoding a transformation block are provided. The method of entropy coding a transformation block includes: determining, according to a certain scan order, a location of a last significant transformation coefficient having a non-zero value from among transformation coefficients included in a transformation block having a certain size; and coding information about the determined location of the last significant transformation coefficient by using a horizontal axis direction location of the last significant transformation coefficient and a vertical axis direction location in the transformation block of the last significant transformation coefficient.
    Type: Application
    Filed: July 18, 2016
    Publication date: January 18, 2018
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Bae-Keun LEE, Yu-Mi SOHN
  • Method and apparatus for encoding/decoding image using transform skip flag
    Patent number: 9866832
    Abstract: Provided is a method for decoding an image. The method may include: 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 15, 2016
    Date of Patent: January 9, 2018
    Assignee: KT CORPORATION
    Inventors: Bae Keun Lee, Jae Cheol Kwon, Joo Young Kim
  • Method and apparatus for coefficient scan based on partition mode of prediction unit
    Patent number: 9854245
    Abstract: Provided are a method and an apparatus for coefficient scan on the base of a partition mode of a prediction unit. The method comprises the steps of: determining a scan method on the basis of a partition mode of a prediction unit; and encoding the information about the scan method, wherein the scan method is determined, on the basis of RDO (Rate Distortion optimization), from among the extracted candidate scan methods which have been extracted with consideration of the shapes of the partitions of the partition mode.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: December 26, 2017
    Assignee: KT CORPORATION
    Inventors: Bae Keun Lee, Jae Cheol Kwon, Joo Young Kim
  • METHOD AND DEVICE FOR PROCESSING VIDEO SIGNAL
    Publication number: 20170347114
    Abstract: A video signal processing method according to the present invention is characterized by constructing a palette map for a current block that is encoded in a palette mode, obtaining an escape present flag based on a number of palette entries included in a palette map, deriving a palette index in a unit of a sample of a current block according to a predetermined scan order, and reconstructing a current block by using at least one of an escape present flag, a palette map or a palette index.
    Type: Application
    Filed: January 13, 2016
    Publication date: November 30, 2017
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Joo Young KIM
  • Method and apparatus for encoding/decoding image using transform skip flag
    Patent number: 9832464
    Abstract: Provided is a method for decoding an image. The method may include 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 15, 2016
    Date of Patent: November 28, 2017
    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
    Publication number: 20170339427
    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: Application
    Filed: August 7, 2017
    Publication date: November 23, 2017
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Joo Young KIM
  • SCALABLE VIDEO SIGNAL ENCODING/DECODING METHOD AND APPARATUS
    Publication number: 20170339414
    Abstract: A scalable video signal decoding method according to the present invention decodes a corresponding picture of a reference layer corresponding to a current picture of a current layer, generates an inter-layer reference picture by up-sampling the decoded corresponding picture, generates a reference picture list including a temporal reference picture and an inter-layer reference picture, and inter-predicting the current picture on the basis of the generated reference picture list.
    Type: Application
    Filed: August 7, 2017
    Publication date: November 23, 2017
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Joo Young KIM
  • IMAGE ENCODING AND DECODING METHOD SUPPORTING PLURALITY OF LAYERS AND APPARATUS USING SAME
    Publication number: 20170339428
    Abstract: An image decoding method supporting a plurality of layers according to the present invention may comprise the steps of: generating an inter-layer reference picture set with respect to one or more reference layers to which a current picture can refer; generating an initial reference picture list including the inter-layer reference picture set; 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: Application
    Filed: August 7, 2017
    Publication date: November 23, 2017
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Joo Young KIM
  • Method and apparatus for encoding/decoding image
    Patent number: 9826251
    Abstract: A method for decoding an image, according to the present invention, comprises the steps of: receiving image information that corresponds to a block to be decoded; performing entropy-decoding with respect to the image information that is received; deciding a transform skip mode of the block to be decoded from a plurality of transform skip mode candidates, based on the image information that is entropy-decoded; and reverse-transforming the block to be decoded based on the transform skip mode that is decided.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: November 21, 2017
    Assignee: KT CORPORATION
    Inventors: Bae Keun Lee, Jae Cheol Kwon, Joo Young Kim