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 APPARATUS FOR ENCODING IMAGE, AND METHOD AND APPARATUS FOR DECODING IMAGE
    Publication number: 20170111647
    Abstract: The present invention discloses a method and an apparatus for encoding and decoding video. A video decoding method comprises reconstructing a residual value by entropy-decoding received bitstream and dequantizing and inverse-transforming residual value information, generating a final prediction unit by performing inter prediction on a prediction unit which is partitioned from a coding unit into at least two prediction units by asymmetric motion partitioning (AMP), the two partitioned prediction units comprising a first partitioned prediction unit and a second partitioned prediction unit, and reconstructing a picture by adding the final prediction unit to the residual values.
    Type: Application
    Filed: December 29, 2016
    Publication date: April 20, 2017
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Jae Cheol KWON, Joo Young KIM
  • METHOD AND APPARATUS FOR ENCODING/DECODING IMAGE
    Publication number: 20170099504
    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: Application
    Filed: December 15, 2016
    Publication date: April 6, 2017
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Jae Cheol KWON, Joo Young KIM
  • METHOD AND APPARATUS FOR ENCODING/DECODING IMAGE
    Publication number: 20170099503
    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: Application
    Filed: December 15, 2016
    Publication date: April 6, 2017
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Jae Cheol KWON, Joo Young KIM
  • METHOD AND APPARATUS FOR ENCODING/DECODING IMAGE
    Publication number: 20170099502
    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: Application
    Filed: December 15, 2016
    Publication date: April 6, 2017
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Jae Cheol KWON, Joo Young KIM
  • METHOD FOR INDUCING A MERGE CANDIDATE BLOCK AND DEVICE USING SAME
    Publication number: 20170094309
    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: Application
    Filed: December 14, 2016
    Publication date: March 30, 2017
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Jae Cheol KWON, Joo Young KIM
  • Method and apparatus for encoding image, and method and apparatus for decoding image
    Patent number: 9578338
    Abstract: The present invention discloses a method and an apparatus for encoding and decoding video. A video decoding method comprises reconstructing a residual value by entropy-decoding received bitstream and dequantizing and inverse-transforming residual value information, generating a final prediction unit by performing inter prediction on a prediction unit which is partitioned from a coding unit into at least two prediction units by asymmetric motion partitioning (AMP), the two partitioned prediction units comprising a first partitioned prediction unit and a second partitioned prediction unit, and reconstructing a picture by adding the final prediction unit to the residual values.
    Type: Grant
    Filed: October 13, 2016
    Date of Patent: February 21, 2017
    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: 9578348
    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: June 16, 2016
    Date of Patent: February 21, 2017
    Assignee: KT CORPORATION
    Inventors: Bae Keun Lee, Jae Cheol Kwon, Joo Young Kim
  • METHOD AND APPARATUS FOR ENCODING/DECODING MULTILAYER VIDEO SIGNAL
    Publication number: 20170041615
    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: Application
    Filed: December 23, 2014
    Publication date: February 9, 2017
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Joo Young KIM
  • METHOD AND APPARATUS FOR ENCODING IMAGE, AND METHOD AND APPARATUS FOR DECODING IMAGE
    Publication number: 20170041619
    Abstract: The present invention discloses a method and an apparatus for encoding and decoding video. A video decoding method comprises reconstructing a residual value by entropy-decoding received bitstream and dequantizing and inverse-transforming residual value information, generating a final prediction unit by performing inter prediction on a prediction unit which is partitioned from a coding unit into at least two prediction units by asymmetric motion partitioning (AMP), the two partitioned prediction units comprising a first partitioned prediction unit and a second partitioned prediction unit, and reconstructing a picture by adding the final prediction unit to the residual values.
    Type: Application
    Filed: October 13, 2016
    Publication date: February 9, 2017
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Jae Cheol KWON, Joo Young KIM
  • METHOD AND APPARATUS FOR ENCODING/DECODING MULTILAYER VIDEO SIGNAL
    Publication number: 20170041601
    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: Application
    Filed: December 23, 2014
    Publication date: February 9, 2017
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Joo Young KIM
  • METHOD AND APPARATUS FOR ENCODING IMAGE, AND METHOD AND APPARATUS FOR DECODING IMAGE
    Publication number: 20170041618
    Abstract: The present invention discloses a method and an apparatus for encoding and decoding video. A video decoding method comprises reconstructing a residual value by entropy-decoding received bitstream and dequantizing and inverse-transforming residual value information, generating a final prediction unit by performing inter prediction on a prediction unit which is partitioned from a coding unit into at least two prediction units by asymmetric motion partitioning (AMP), the two partitioned prediction units comprising a first partitioned prediction unit and a second partitioned prediction unit, and reconstructing a picture by adding the final prediction unit to the residual values.
    Type: Application
    Filed: October 13, 2016
    Publication date: February 9, 2017
    Applicant: 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: 9565442
    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: February 4, 2016
    Date of Patent: February 7, 2017
    Assignee: KT CORPORATION
    Inventors: Bae Keun Lee, Jae Cheol Kwon, Joo Young Kim
  • Method and apparatus for encoding/decoding image
    Patent number: 9560385
    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: January 26, 2015
    Date of Patent: January 31, 2017
    Assignee: KT Corporation
    Inventors: Bae Keun Lee, Jae Cheol Kwon, Joo Young Kim
  • Method and apparatus for encoding/decoding image
    Patent number: 9560384
    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: October 17, 2012
    Date of Patent: January 31, 2017
    Assignee: KT CORPORATION
    Inventors: Bae Keun Lee, Jae Cheol Kwon, Joo Young Kim
  • ADAPTIVE TRANSFORM METHOD BASED ON IN-SCREEN PREDICTION AND APPARATUS USING THE METHOD
    Publication number: 20170026643
    Abstract: Disclosed is an adaptive transform method based on an in-screen prediction, and an apparatus using the method. A method for encoding an image can comprise a step of determining in-screen prediction mode groups, and a step of transforming by using a different transform method according to the in-screen prediction mode group. As a result, transforming can be performed by applying the different transform method according to the in-screen prediction mode group.
    Type: Application
    Filed: October 7, 2016
    Publication date: January 26, 2017
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Jae Cheol KWON, Joo Young KIM
  • ADAPTIVE TRANSFORM METHOD BASED ON IN-SCREEN PREDICTION AND APPARATUS USING THE METHOD
    Publication number: 20170026644
    Abstract: Disclosed is an adaptive transform method based on an in-screen prediction, and an apparatus using the method. A method for encoding an image can comprise a step of determining in-screen prediction mode groups, and a step of transforming by using a different transform method according to the in-screen prediction mode group. As a result, transforming can be performed by applying the different transform method according to the in-screen prediction mode group.
    Type: Application
    Filed: October 7, 2016
    Publication date: January 26, 2017
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Jae Cheol KWON, Joo Young KIM
  • Method and apparatus for encoding image, and method and apparatus for decoding image
    Patent number: 9554140
    Abstract: The present invention discloses a method and an apparatus for encoding and decoding video. A video decoding method comprises reconstructing a residual value by entropy-decoding received bitstream and dequantizing and inverse-transforming residual value information, generating a final prediction unit by performing inter prediction on a prediction unit which is partitioned from a coding unit into at least two prediction units by asymmetric motion partitioning (AMP), the two partitioned prediction units comprising a first partitioned prediction unit and a second partitioned prediction unit, and reconstructing a picture by adding the final prediction unit to the residual values.
    Type: Grant
    Filed: October 13, 2016
    Date of Patent: January 24, 2017
    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: 9554144
    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 16, 2015
    Date of Patent: January 24, 2017
    Assignee: KT CORPORATION
    Inventors: Bae Keun Lee, Jae Cheol Kwon, Joo Young Kim
  • METHOD AND APPARATUS FOR PROCESSING MULTIVIEW VIDEO SIGNALS
    Publication number: 20170006302
    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: Application
    Filed: March 18, 2015
    Publication date: January 5, 2017
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Joo Young KIM
  • METHOD AND APPARATUS FOR ENCODING/DECODING IMAGE USING TRANSFORM SKIP FLAG
    Publication number: 20160381362
    Abstract: A method for decoding an image, according to the present invention, comprises the steps of: 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: Application
    Filed: September 7, 2016
    Publication date: December 29, 2016
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Jae Cheol KWON, Joo Young KIM