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).

  • SCALABLE VIDEO SIGNAL ENCODING/DECODING METHOD AND APPARATUS
    Publication number: 20160165260
    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: July 29, 2014
    Publication date: June 9, 2016
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Joo Young KIM
  • METHOD AND APPARATUS FOR ENCODING/DECODING IMAGE USING TRANSFORM SKIP FLAG
    Publication number: 20160165253
    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: February 15, 2016
    Publication date: June 9, 2016
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Jae Cheol KWON, Joo Young KIM
  • SCALABLE VIDEO SIGNAL ENCODING/DECODING METHOD AND DEVICE
    Publication number: 20160165242
    Abstract: A scalable video signal decoding method according to the present invention determines, based on the temporal identifier of a lower layer, whether a corresponding picture of the lower layer is used as an inter-layer reference picture for the current picture of an upper layer, creates a list of reference pictures for the current picture based on the determination, and performs inter-layer prediction on the current block in the current picture based on the created list of reference pictures.
    Type: Application
    Filed: July 15, 2014
    Publication date: June 9, 2016
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Joo Young KIM
  • ADAPTIVE TRANSFORM METHOD BASED ON IN-SCREEN PREDICTION AND APPARATUS USING THE METHOD
    Publication number: 20160156934
    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: February 5, 2016
    Publication date: June 2, 2016
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Jae Cheol KWON, Joo Young KIM
  • METHOD AND APPARATUS FOR ENCODING/DECODING SCALABLE VIDEO SIGNAL
    Publication number: 20160156913
    Abstract: A method for decoding a scalable video signal according to the present invention comprises: obtaining a discardable flag for a picture in a lower layer; determining whether the picture in the lower layer is used as a reference picture, based on the discardable flag; and storing the picture in the lower layer in a decoded picture buffer, when the picture in the lower layer is used as the reference picture.
    Type: Application
    Filed: July 15, 2014
    Publication date: June 2, 2016
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Joo Young KIM
  • METHOD AND APPARATUS FOR COEFFICIENT SCAN BASED ON PARTITION MODE OF PREDICTION UNIT
    Publication number: 20160156910
    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: February 4, 2016
    Publication date: June 2, 2016
    Applicant: 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: 9357225
    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 15, 2015
    Date of Patent: May 31, 2016
    Assignee: 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: 20160105683
    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 16, 2015
    Publication date: April 14, 2016
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Jae Cheol KWON, Joo Young KIM
  • METHOD FOR INDUCING MOTION INFORMATION IN MULTILAYER STRUCTURE AND APPARATUS USING SAME
    Publication number: 20160100187
    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: Application
    Filed: May 26, 2014
    Publication date: April 7, 2016
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Joo Young KIM
  • METHOD FOR INDUCING A MERGE CANDIDATE BLOCK AND DEVICE USING SAME
    Publication number: 20160100182
    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 15, 2015
    Publication date: April 7, 2016
    Applicant: 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: 9300973
    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: Grant
    Filed: October 17, 2012
    Date of Patent: March 29, 2016
    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: 9300974
    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: Grant
    Filed: January 26, 2015
    Date of Patent: March 29, 2016
    Assignee: KT CORPORATION
    Inventors: Bae Keun Lee, Jae Cheol Kwon, Joo Young Kim
  • METHOD AND APPARATUS FOR CODING VIDEO SUPPORTING PLURALITY OF LAYERS
    Publication number: 20160088303
    Abstract: Disclosed are a method and an apparatus for coding a video supporting a plurality of layers. The method for coding the video supporting the plurality of layers, according to the present invention, comprises the steps of: inducing a reference layer sample location from a reference layer picture used for inter-layer prediction of a current layer picture; resampling the reference layer picture, based on the reference layer sample location; and generating a prediction sample of a current block by inter-layer predicting the current block of the current layer picture, based on the resampled reference layer picture.
    Type: Application
    Filed: May 22, 2014
    Publication date: March 24, 2016
    Applicant: KT CORPORATION
    Inventors: Bae Keun LEE, Joo Young KIM
  • Adaptive transform method based on in-screen prediction and apparatus using the method
    Patent number: 9294775
    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: Grant
    Filed: January 26, 2015
    Date of Patent: March 22, 2016
    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: 9294773
    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: January 26, 2015
    Date of Patent: March 22, 2016
    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
    Patent number: 9294774
    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: Grant
    Filed: August 1, 2012
    Date of Patent: March 22, 2016
    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: 9253498
    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: September 6, 2012
    Date of Patent: February 2, 2016
    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: 9253499
    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 26, 2015
    Date of Patent: February 2, 2016
    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: 9225990
    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: November 8, 2012
    Date of Patent: December 29, 2015
    Assignee: KT CORPORATION
    Inventors: Bae Keun Lee, Jae Cheol Kwon, Joo Young Kim
  • METHOD FOR DERIVING A TEMPORAL PREDICTIVE MOTION VECTOR, AND APPARATUS USING THE METHOD
    Publication number: 20150208093
    Abstract: Disclosed are a method for deriving a temporal predictive motion vector, and an apparatus using the method. An image decoding method may comprise the steps of: determining whether or not a block to be predicted is brought into contact with a boundary of a largest coding unit (LCU); and determining whether or not a first call block is available according to whether or not the block to be predicted is brought into contact with the boundary of the LCU. Accordingly, unnecessary memory bandwidth may be reduced, and implementation complexity may also be reduced.
    Type: Application
    Filed: January 26, 2015
    Publication date: July 23, 2015
    Inventors: Bae Keun LEE, Jae Cheol KWON, Joo Young KIM